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2015 Lone Star Le Mans

{{Short description|Sports Car race}}

{{Use mdy dates|date=February 2025}}

File:Austin circuit.svg - Grand Prix Circuit]]

The 2015 Lone Star Le Mans was a sports car race sanctioned by the International Motor Sports Association (IMSA). The race was held at Circuit of the Americas in Austin, Texas, on September 19, 2015. The race was the eleventh round of the 2015 United SportsCar Championship.

Background

File:CircuitOfTheAmericasAerial-July2015.jpg (pictured in 2015), where the race was held.]]

= Preview =

International Motor Sports Association (IMSA) president Scott Atherton confirmed the race was part of the schedule for the 2015 IMSA Tudor United SportsCar Championship (IMSA TUSC) in August 2014.{{Cite web |last=Dagys |first=John |date=10 August 2014 |title=2015 TUSC, CTSC Schedules Released |url=https://sportscar365.com/imsa/impc/2015-tusc-ctsc-schedules-released/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}} It was the second consecutive year the event was held as part of the United SportsCar Championship. The 2015 Lone Star Le Mans was the eleventh of twelve scheduled sports car races of 2015 by IMSA, and was the eighth round not held as part of the North American Endurance Cup.{{cite news |last=Pruett |first=Marshall |date=August 10, 2014 |title=IMSA: 2015 TUDOR Championship schedule revealed |url=http://www.racer.com/imsa/item/107323-imsa-2015-tudor-championship-schedule-revealed |url-status=dead |archive-url=https://web.archive.org/web/20150323093836/http://www.racer.com/imsa/item/107323-imsa-2015-tudor-championship-schedule-revealed |archive-date=March 23, 2015 |accessdate=8 November 2024 |publisher=Racer}} The race was held at the twenty-turn {{Convert|3.426|mi|km|abbr=on}} Circuit of the Americas in Austin, Texas on September 19, 2015.

= Entry list =

Thirty-eight cars were officially entered for the Lone Star Le Mans. Action Express Racing (AER) fielded two Chevrolet Corvette DP cars while VisitFlorida Racing (VFR) and Wayne Taylor Racing (WTR) fielded one. Chip Ganassi Racing (CGR) entered one Ford-powered Riley MkXXVI. Mazda Motorsports had two Lola B12/80 cars and Michael Shank Racing (MSR) entered one Ligier JS P2 chasis with Honda HR28TT twin-turbocharged 2.8-liter V6 engine.{{Cite web |last=Dagys |first=John |date=15 September 2015 |title=Mazda Returns to Two-Car Diesel Prototype Effort for COTA |url=https://sportscar365.com/imsa/iwsc/mazda-returns-to-two-car-diesel-prototype-effort-for-cota/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}} They were joined by DeltaWing. The Prototype Challenge (PC) class was composed of Nine Oreca FLM09 cars: two from BAR1 Motorsports and two from Starworks Motorsport. CORE Autosport, JDC-Miller MotorSports, Performance Tech, PR1/Mathiasen Motorsports, and RSR Racing entered one car each.{{Cite web |last=DiZinno |first=Tony |date=9 September 2015 |title=38 Cars on COTA TUSC Entry List |url=https://sportscar365.com/imsa/iwsc/38-cars-on-cota-tusc-entry-list/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}} GTLM was represented by eight entries from four different brands. In the list of GTD entrants, twelve GT-specification vehicles were represented by six different manufacturers. The No. 45 Flying Lizard Motorsports Audi R8 LMS ultra was reinstated to the Tudor United SportsCar Championship after making its first appearance since the Laguna Seca round.{{Cite web |date=8 September 2015 |title=Vess, Hart to Drive Flying Lizard Audi at COTA |url=https://sportscar365.com/imsa/iwsc/vess-hart-to-drive-flying-lizard-audi-at-cota/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}} Lone Star Racing made their series debut.{{Cite web |last=Dagys |first=John |date=9 September 2015 |title=Lone Star Viper to Debut at COTA; Goossens Named Driver |url=https://sportscar365.com/imsa/tusc/goossens-knox-to-drive-lone-star-viper-at-cota/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}}

Qualifying

Friday afternoon's 90-minute four-group qualifying session gave 15-minute sessions to all categories. Cars in GTD were sent out first before those grouped in GTLM, PC, and Prototype had three separate identically timed sessions. Regulations stipulated teams to nominate one qualifying driver, with the fastest laps determining each classes starting order. IMSA would arranged the grid to put all Prototypes ahead of the PC, GTLM, and GTD cars.{{Cite web |last=Dagys |first=John |date=16 September 2015 |title=Continental Tire Keys to the Race: COTA |url=https://sportscar365.com/imsa/iwsc/continental-tire-keys-to-the-race-cota/ |access-date=8 November 2024 |website=Sportscar365.com |publisher=John Dagys Media, LLC}}

= Qualifying results =

Pole positions in each class are indicated in bold and by {{Double-dagger}}. P stands for Prototype, PC (Prototype Challenge), GTLM (Grand Touring Le Mans) and GTD (Grand Touring Daytona).

class="wikitable"

!{{Tooltip|Pos.|Position}}

!Class

!{{Tooltip|No.|Car number}}

!Team

!Driver

!Time

!{{Tooltip|Gap|Gap in seconds}}

!{{Tooltip|Grid|Final grid position}}

1

|P

|01

|{{flagicon|USA}} Chip Ganassi Racing

|{{flagicon|USA}} Scott Pruett

|1:58.441

|_

!1{{Double-dagger}}

2

|P

|60

|{{flagicon|USA}} Michael Shank Racing with Curb/Agajanian

|{{flagicon|BRA}} Oswaldo Negri Jr.

|1:58.512

| +0.071

!2

3

|P

|5

|{{flagicon|USA}} Action Express Racing

|{{flagicon|BRA}} Christian Fittipaldi

|1:59.008

| +0.567

!3

4

|P

|10

|{{flagicon|USA}} Wayne Taylor Racing

|{{flagicon|USA}} Jordan Taylor

|1:59.033

| +0.592

!4

5

|P

|31

|{{flagicon|USA}} Action Express Racing

|{{flagicon|USA}} Eric Curran

|2:00.011

| +1.570

!5

6

|P

|90

|{{flagicon|USA}} VisitFlorida.com Racing

|{{flagicon|CAN}} Michael Valiante

|2:00.111

| +1.670

!6

7

|P

|0

|{{flagicon|USA}} DeltaWing Racing Cars with Claro/TracFone

|{{flagicon|MEX}} Memo Rojas

|2:01.570

| +3.129

!7

8

|PC

|11

|{{flagicon|USA}} RSR Racing

|{{flagicon|CAN}} Chris Cumming

|2:02.222

|+3.781

!8{{Double-dagger}}

9

|PC

|85

|{{flagicon|USA}} JDC-Miller MotorSports

|{{flagicon|USA}} Matt McMurry

|2:02.697

| +4.256

!9

10

|P

|70

|{{flagicon|USA}} SpeedSource

|{{flagicon|USA}} Tristan Nunez

|2:02.779

| +4.338

!10

11

|P

|07

|{{flagicon|USA}} SpeedSource

|{{flagicon|USA}} Tom Long

|2:03.484

| +5.043

!11

12

|PC

|38

|{{flagicon|USA}} Performance Tech Motorsports

|{{flagicon|USA}} James French

|2:03.586

| +5.145

!12

13

|PC

|54

|{{flagicon|USA}} CORE Autosport

|{{flagicon|USA}} Jon Bennett

|2:03.697

| +5.256

!13

14

|PC

|8

|{{flagicon|USA}} Starworks Motorsport

|{{flagicon|USA}} Mike Hedlund

|2:04.009

| +5.568

!14

15

|GTLM

|911

|{{flagicon|USA}} Porsche North America

|{{flagicon|FRA}} Patrick Pilet

|2:04.396

|+5.955

!17{{Double-dagger}}

16

|PC

|52

|{{flagicon|USA}} PR1/Mathiasen Motorsports

|{{flagicon|USA}} Mike Guasch

|2:04.432

| +5.991

!15

17

|GTLM

|25

|{{flagicon|USA}} BMW Team RLL

|{{flagicon|DEU}} Dirk Werner

|2:04.490

| +6.049

!18

18

|GTLM

|912

|{{flagicon|USA}} Porsche North America

|{{flagicon|NZL}} Earl Bamber

|2:04.625

| +6.184

!19

19

|GTLM

|3

|{{flagicon|USA}} Corvette Racing

|{{flagicon|ESP}} Antonio García

|2:04.651

| +6.210

!20

20

|GTLM

|17

|{{flagicon|USA}} Team Falken Tire

|{{flagicon|DEU}} Wolf Henzler

|2:04.813

| +6.372

!21

21

|GTLM

|24

|{{flagicon|USA}} BMW Team RLL

|{{flagicon|USA}} John Edwards

|2:04.968

| +6.527

!22

22

|GTLM

|4

|{{flagicon|USA}} Corvette Racing

|{{flagicon|USA}} Tommy Milner

|2:05.245

| +6.804

!23

23

|GTLM

|62

|{{flagicon|USA}} Risi Competizione

|{{flagicon|ITA}} Giancarlo Fisichella

|2:05.996

| +7.555

!24

24

|PC

|61

|{{flagicon|USA}} BAR1 Motorsports

|{{flagicon|USA}} Don Yount

|2:08.350

| +9.909

!16

25

|GTD

|48

|{{flagicon|USA}} Paul Miller Racing

|{{flagicon|ZAF}} Dion von Moltke

|2:11.097

|+12.656

!25{{Double-dagger}}

26

|GTD

|33

|{{flagicon|USA}} Riley Motorsports

|{{flagicon|USA}} Ben Keating

|2:11.658

| +13.217

!26

27

|GTD

|63

|{{flagicon|USA}} Scuderia Corsa

|{{flagicon|USA}} Bill Sweedler

|2:11.729

| +13.288

!27

28

|GTD

|007

|{{flagicon|USA}} TRG-AMR North America

|{{flagicon|DEN}} Christina Nielsen

|2:11.761

| +13.320

!28

29

|GTD

|73

|{{flagicon|USA}} Park Place Motorsports

|{{flagicon|USA}} Patrick Lindsey

|2:12.213

| +13.772

!29

30

|GTD

|44

|{{flagicon|USA}} Magnus Racing

|{{flagicon|USA}} John Potter

|2:12.478

| +14.037

!30

31

|GTD

|80

|{{flagicon|USA}} Lone Star Racing

|{{flagicon|USA}} Dan Knox

|2:12.835

| +14.394

!31

32

|GTD

|23

|{{flagicon|USA}} Team Seattle / Alex Job Racing

|{{flagicon|GBR}} Ian James

|2:12.935

| +14.494

!32

33

|GTD

|97

|{{flagicon|USA}} Turner Motorsport

|{{flagicon|USA}} Michael Marsal

|2:13.054

| +14.613

!33

34

|GTD

|22

|{{flagicon|USA}} Alex Job Racing

|{{flagicon|USA}} Cooper MacNeil

|2:13.126

| +14.685

!34

35

|GTD

|45

|{{flagicon|USA}} Flying Lizard Motorsports

|{{flagicon|USA}} Mike Vess

|2:16.353

| +17.912

!35

36

|GTD

|76

|{{flagicon|CAN}} Compass360 Racing

|{{flagicon|USA}} Ray Mason

|2:16.518

| +18.077

!36

37

|PC

|16

|{{flagicon|USA}} BAR1 Motorsports

| colspan="3" |No Time Established

!37

38

|PC

|88

|{{flagicon|USA}} Starworks Motorsport

| colspan="3" |No Time Established

!38

colspan="8" |Sources:{{Cite web |date=18 September 2015 |title=Qualifying |url=https://www.imsa.com/sites/default/files/race_result_files/2015_TUDORChampionship_COTA_Qualifying.pdf |url-status=dead |archive-url=https://web.archive.org/web/20150922032055/https://www.imsa.com/sites/default/files/race_result_files/2015_TUDORChampionship_COTA_Qualifying.pdf |archive-date=22 September 2015 |access-date=5 November 2024 |publisher=IMSA}}{{Cite web |title=United SportsCar Championship Austin 2015 Grid Positions |url=https://www.racingsportscars.com/grid/Austin-2015-09-19a.html |access-date=8 November 2024 |publisher=Racing Sports Cars}}

Race

= Race Results =

Class winners are denoted in bold and {{Double-dagger}}. P stands for Prototype, PC (Prototype Challenge), GTLM (Grand Touring Le Mans) and GTD (Grand Touring Daytona).

valign="top"

|

{| class="wikitable" style="font-size: 95%;"

|+Final race classification

! rowspan="2" |{{Abbr|Pos|Position}}

! rowspan="2" |Class

! rowspan="2" class="unsortable" |{{Abbr|No.|Car number}}

! rowspan="2" class="unsortable" |Team

! rowspan="2" class="unsortable" |Drivers

! scope="col" class="unsortable" |Chassis

! rowspan="2" |Tire

! rowspan="2" class="unsortable" |{{Abbr|Laps|Laps completed}}

! rowspan="2" class="unsortable" |Time/Retired

Engine
style="font-weight:bold"

! rowspan="2" |1

| rowspan="2" |P

| rowspan="2" |01

| rowspan="2" |{{flagicon|USA}} Chip Ganassi Racing

| rowspan="2" |{{flagicon|USA}} Joey Hand
{{flagicon|USA}} Scott Pruett

|Ford EcoBoost Riley DP

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" |2:41:07.039{{Double-dagger}}

style="font-weight:bold"

|Ford EcoBoost 3.5 L V6 Turbo

rowspan="2" |2

| rowspan="2" |P

| rowspan="2" |10

| rowspan="2" |{{flagicon|USA}} Wayne Taylor Racing

| rowspan="2" |{{flagicon|USA}} Jordan Taylor
{{flagicon|USA}} Ricky Taylor

|Corvette Daytona Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +16.910

Chevrolet 5.5 L V8
rowspan="2" |3

| rowspan="2" |P

| rowspan="2" |90

| rowspan="2" |{{flagicon|USA}} VisitFlorida.com Racing

| rowspan="2" |{{flagicon|GBR}} Richard Westbrook
{{flagicon|CAN}} Michael Valiante

|Corvette Daytona Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +44.212

Chevrolet 5.5 L V8
rowspan="2" |4

| rowspan="2" |P

| rowspan="2" |60

| rowspan="2" |{{flagicon|USA}} Michael Shank Racing with Curb/Agajanian

| rowspan="2" |{{flagicon|USA}} John Pew
{{flagicon|BRA}} Oswaldo Negri Jr.

|Ligier JS P2

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +44.575

Honda HR28TT 2.8 L V6 Turbo
rowspan="2" |5

| rowspan="2" |P

| rowspan="2" |31

| rowspan="2" |{{flagicon|USA}} Action Express Racing

| rowspan="2" |{{flagicon|USA}} Eric Curran

{{flagicon|USA}} Dane Cameron

|Corvette Daytona Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +1:06.753

Chevrolet 5.5 L V8
style="font-weight:bold"

! rowspan="2" |6

| rowspan="2" |PC

| rowspan="2" |54

| rowspan="2" |{{flagicon|USA}} CORE Autosport

| rowspan="2" |{{flagicon|USA}} Jon Bennett
{{flagicon|USA}} Colin Braun

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +1:28.158{{Double-dagger}}

style="font-weight:bold"

|Chevrolet 6.2 L V8

rowspan="2" |7

| rowspan="2" |PC

| rowspan="2" |11

| rowspan="2" |{{flagicon|USA}} RSR Racing

| rowspan="2" |{{flagicon|CAN}} Chris Cumming
{{flagicon|BRA}} Bruno Junqueira

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +1:53.822

Chevrolet 6.2 L V8
rowspan="2" |8

| rowspan="2" |PC

| rowspan="2" |38

| rowspan="2" |{{flagicon|USA}} Performance Tech Motorsports

| rowspan="2" |{{flagicon|USA}} Conor Daly
{{flagicon|USA}} James French

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +1:57.517

Chevrolet 6.2 L V8
rowspan="2" |9

| rowspan="2" |PC

| rowspan="2" |52

| rowspan="2" |{{flagicon|USA}} PR1/Mathiasen Motorsports

| rowspan="2" |{{flagicon|USA}} Mike Guasch
{{flagicon|GBR}} Tom Kimber-Smith

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |73

| rowspan="2" | +1:58.239

Chevrolet 6.2 L V8
rowspan="2" |10

| rowspan="2" |P

| rowspan="2" |5

| rowspan="2" |{{flagicon|USA}} Action Express Racing

| rowspan="2" |{{flagicon|POR}} João Barbosa
{{flagicon|BRA}} Christian Fittipaldi

|Corvette Daytona Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Chevrolet 5.5 L V8
rowspan="2" |11

| rowspan="2" |P

| rowspan="2" |0

| rowspan="2" |{{flagicon|USA}} DeltaWing Racing Cars with Claro/TracFone

| rowspan="2" |{{flagicon|MEX}} Memo Rojas
{{flagicon|GBR}} Katherine Legge

|DeltaWing DWC13

| rowspan="2" |{{Continental}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Élan (Mazda) 1.9 L I4 Turbo
style="font-weight:bold"

! rowspan="2" |12

| rowspan="2" |GTLM

| rowspan="2" |25

| rowspan="2" |{{flagicon|USA}} BMW Team RLL

| rowspan="2" |{{flagicon|USA}} Bill Auberlen
{{flagicon|DEU}} Dirk Werner

|BMW Z4 GTE

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap{{Double-dagger}}

style="font-weight:bold"

|BMW 4.4 L V8

rowspan="2" |13

| rowspan="2" |GTLM

| rowspan="2" |62

| rowspan="2" |{{flagicon|USA}} Risi Competizione

| rowspan="2" |{{flagicon|DEU}} Pierre Kaffer
{{flagicon|ITA}} Giancarlo Fisichella

|Ferrari 458 Italia GT2

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Ferrari 4.5 L V8
rowspan="2" |14

| rowspan="2" |PC

| rowspan="2" |85

| rowspan="2" |{{flagicon|USA}} JDC-Miller MotorSports

| rowspan="2" |{{flagicon|CAN}} Misha Goikhberg
{{flagicon|USA}} Matt McMurry

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Chevrolet 6.2 L V8
rowspan="2" |15

| rowspan="2" |GTLM

| rowspan="2" |911

| rowspan="2" |{{flagicon|USA}} Porsche North America

| rowspan="2" |{{flagicon|FRA}} Patrick Pilet

{{flagicon|GBR}} Nick Tandy

|Porsche 911 RSR

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Porsche 4.0 L Flat-6
rowspan="2" |16

| rowspan="2" |GTLM

| rowspan="2" |17

| rowspan="2" |{{flagicon|USA}} Team Falken Tire

| rowspan="2" |{{flagicon|USA}} Bryan Sellers
{{flagicon|DEU}} Wolf Henzler

|Porsche 911 RSR

| rowspan="2" |{{Falken}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Porsche 4.0 L Flat-6
rowspan="2" |17

| rowspan="2" |GTLM

| rowspan="2" |912

| rowspan="2" |{{flagicon|USA}} Porsche North America

| rowspan="2" |{{flagicon|NZL}} Earl Bamber
{{flagicon|DEU}} Jörg Bergmeister

|Porsche 911 RSR

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Porsche 4.0 L Flat-6
rowspan="2" |18

| rowspan="2" |GTLM

| rowspan="2" |3

| rowspan="2" |{{flagicon|USA}} Corvette Racing

| rowspan="2" |{{flagicon|ESP}} Antonio García
{{flagicon|DEN}} Jan Magnussen

|Chevrolet Corvette C7.R

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Chevrolet LT5.5 5.5 L V8
rowspan="2" |19

| rowspan="2" |GTLM

| rowspan="2" |24

| rowspan="2" |{{flagicon|USA}} BMW Team RLL

| rowspan="2" |{{flagicon|USA}} John Edwards
{{flagicon|DEU}} Lucas Luhr

|BMW Z4 GTE

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

BMW 4.4 L V8
rowspan="2" |20

| rowspan="2" |GTLM

| rowspan="2" |4

| rowspan="2" |{{flagicon|USA}} Corvette Racing

| rowspan="2" |{{flagicon|GBR}} Oliver Gavin
{{flagicon|USA}} Tommy Milner

|Chevrolet Corvette C7.R

| rowspan="2" |{{Michelin}}

| rowspan="2" |72

| rowspan="2" | +1 lap

Chevrolet LT5.5 5.5 L V8
rowspan="2" |21

DNF

| rowspan="2" |PC

| rowspan="2" |8

| rowspan="2" |{{flagicon|USA}} Starworks Motorsport

| rowspan="2" |{{flagicon|USA}} Mike Hedlund
{{flagicon|NLD}} Renger van der Zande

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |70

| rowspan="2" | Suspension

Chevrolet 6.2 L V8
style="font-weight:bold"

! rowspan="2" |22

| rowspan="2" |GTD

| rowspan="2" |33

| rowspan="2" |{{flagicon|USA}} Riley Motorsports

| rowspan="2" |{{flagicon|NLD}} Jeroen Bleekemolen
{{flagicon|USA}} Ben Keating

|Dodge Viper GT3-R

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps{{Double-dagger}}

style="font-weight:bold"

|Dodge 8.3 L V10

rowspan="2" |23

| rowspan="2" |GTD

| rowspan="2" |97

| rowspan="2" |{{flagicon|USA}} Turner Motorsport

| rowspan="2" |{{flagicon|USA}} Michael Marsal

{{flagicon|FIN}} Markus Palttala

|BMW Z4 GT3

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

BMW 4.4 L V8
rowspan="2" |24

| rowspan="2" |GTD

| rowspan="2" |48

| rowspan="2" |{{flagicon|USA}} Paul Miller Racing

| rowspan="2" |{{flagicon|GER}} Christopher Haase
{{flagicon|ZAF}} Dion von Moltke

|Audi R8 LMS ultra

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Audi 5.2 L V10
rowspan="2" |25

| rowspan="2" |GTD

| rowspan="2" |23

| rowspan="2" |{{flagicon|USA}} Team Seattle / Alex Job Racing

| rowspan="2" |{{flagicon|GER}} Mario Farnbacher
{{flagicon|GBR}} Ian James

|Porsche 911 GT America

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Porsche 4.0 L Flat-6
rowspan="2" |26

| rowspan="2" |GTD

| rowspan="2" |73

| rowspan="2" |{{flagicon|USA}} Park Place Motorsports

| rowspan="2" |{{flagicon|USA}} Patrick Lindsey
{{flagicon|USA}} Spencer Pumpelly

|Porsche 911 GT America

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Porsche 4.0 L Flat-6
rowspan="2" |27

| rowspan="2" |GTD

| rowspan="2" |63

| rowspan="2" |{{flagicon|USA}} Scuderia Corsa

| rowspan="2" |{{flagicon|USA}} Bill Sweedler
{{flagicon|USA}} Townsend Bell

|Ferrari 458 Italia GT3

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Ferrari 4.5 L V8
rowspan="2" |28

| rowspan="2" |GTD

| rowspan="2" |80

| rowspan="2" |{{flagicon|USA}} Lone Star Racing

| rowspan="2" |{{flagicon|BEL}} Marc Goossens

{{flagicon|USA}} Dan Knox

|Dodge Viper GT3-R

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Dodge 8.3 L V10
rowspan="2" |29

| rowspan="2" |GTD

| rowspan="2" |007

| rowspan="2" |{{flagicon|USA}} TRG-AMR North America

| rowspan="2" |{{flagicon|DEN}} Christina Nielsen
{{flagicon|CAN}} Kuno Wittmer

|Aston Martin V12 Vantage GT3

| rowspan="2" |{{Continental}}

| rowspan="2" |69

| rowspan="2" | +4 Laps

Aston Martin 6.0 L V12
rowspan="2" |30

| rowspan="2" |GTD

| rowspan="2" |22

| rowspan="2" |{{flagicon|USA}} Alex Job Racing

| rowspan="2" |{{flagicon|USA}} Leh Keen
{{flagicon|USA}} Cooper MacNeil

|Porsche 911 GT America

| rowspan="2" |{{Continental}}

| rowspan="2" |68

| rowspan="2" | +5 Laps

Porsche 4.0 L Flat-6
rowspan="2" |31

| rowspan="2" |GTD

| rowspan="2" |76

| rowspan="2" |{{flagicon|CAN}} Compass360 Racing

| rowspan="2" |{{flagicon|BRA}} Pierre Kleinubing
{{flagicon|USA}} Ray Mason

|Audi R8 LMS ultra

| rowspan="2" |{{Continental}}

| rowspan="2" |68

| rowspan="2" | +5 Laps

Audi 5.2 L V10
rowspan="2" |32

| rowspan="2" |GTD

| rowspan="2" |45

| rowspan="2" |{{flagicon|USA}} Flying Lizard Motorsports

| rowspan="2" |{{flagicon|USA}} Jason Hart

{{flagicon|USA}} Mike Vess

|Audi R8 LMS ultra

| rowspan="2" |{{Continental}}

| rowspan="2" |66

| rowspan="2" | +7 Laps

Audi 5.2 L V10
rowspan="2" |33

DNF

| rowspan="2" |P

| rowspan="2" |70

| rowspan="2" |{{flagicon|USA}} SpeedSource

| rowspan="2" |{{flagicon|USA}} Jonathan Bomarito

{{flagicon|USA}} Tristan Nunez

|Mazda Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |65

| rowspan="2" |Belt

Mazda Skyactiv-D 2.2 L Turbo I4 (Diesel)
rowspan="2" |34

| rowspan="2" |GTD

| rowspan="2" |44

| rowspan="2" |{{flagicon|USA}} Magnus Racing

| rowspan="2" |{{flagicon|USA}} John Potter
{{flagicon|USA}} Andy Lally

|Porsche 911 GT America

| rowspan="2" |{{Continental}}

| rowspan="2" |46

| rowspan="2" | +27 Laps

Porsche 4.0 L Flat-6
rowspan="2" |35

DNF

| rowspan="2" |PC

| rowspan="2" |61

| rowspan="2" |{{flagicon|USA}} BAR1 Motorsports

| rowspan="2" |{{flagicon|GBR}} Ryan Lewis

{{flagicon|USA}} Don Yount

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" |33

| rowspan="2" |Accident

Chevrolet 6.2 L V8
rowspan="2" |36

DNF

| rowspan="2" |P

| rowspan="2" |07

| rowspan="2" |{{flagicon|USA}} SpeedSource

| rowspan="2" |{{flagicon|USA}} Tom Long
{{flagicon|USA}} Joel Miller

|Mazda Prototype

| rowspan="2" |{{Continental}}

| rowspan="2" |23

| rowspan="2" |Belt

Mazda Skyactiv-D 2.2 L Turbo I4 (Diesel)
rowspan="2" |37

DNS

| rowspan="2" |PC

| rowspan="2" |16

| rowspan="2" |{{flagicon|USA}} BAR1 Motorsports

| rowspan="2" |{{flagicon|USA}} John Falb

{{flagicon|USA}} Todd Slusher

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" | --

| rowspan="2" |Did Not Start

Chevrolet 6.2 L V8
rowspan="2" |38

DNS

| rowspan="2" |PC

| rowspan="2" |88

| rowspan="2" |{{flagicon|USA}} Starworks Motorsport

| rowspan="2" |{{flagicon|VEN}} Alex Popow

{{flagicon|USA}} Sean Rayhall

|Oreca FLM09

| rowspan="2" |{{Continental}}

| rowspan="2" | --

| rowspan="2" |Did Not Start

Chevrolet 6.2 L V8
colspan="9" |Sources:{{cite web |date=19 September 2015 |title=Unofficial Race Report |url=http://imsatiming.com/Results/2015/TUDOR%20Championship/11-COTA/TUDOR%20Championship%20COTA%20Race%20Unofficial.pdf |url-status=dead |archive-url=https://web.archive.org/web/20211020070421/http://imsatiming.com/Results/2015/TUDOR%20Championship/11-COTA/TUDOR%20Championship%20COTA%20Race%20Unofficial.pdf |archive-date=20 October 2021 |accessdate=8 November 2024 |publisher=IMSA}}{{Cite web |title=2015 Lone Star Le Mans |url=https://www.racing-reference.info/race-results/2015_Lone_Star_Le_Mans/TU/ |access-date=8 November 2024 |website=Racing-Reference |publisher=NASCAR Digital Media, LLC}}

|

class="wikitable" style="margin-right:0; font-size:90%"

|+ Tyre manufacturers

! colspan="2" scope="col" | Key

scope="col" | Symbolscope="col" | Tyre manufacturer
{{Continental}}Continental
{{Michelin}}Michelin
{{Falken}}Falken Tire

|}

References

{{reflist|30em}}

External links

{{Sportscar Race Report|Sportscar_Series=United SportsCar Championship|Previous_race_in_season=Oak Tree Grand Prix|Year_of_race=2015|Next_race_in_season=Petit Le Mans}}{{United SportsCar Championship Rounds}}{{6 Hours of Circuit of the Americas}}

Category:2015 United SportsCar Championship season

United SportsCar Championship

Category:September 2015 sports events in the United States

Category:Motorsport competitions in Texas

Category:Sports in Austin, Texas