IMSA News: Entry List and Preview for the 6 Hour Battle on the Bricks

Two races remain in the 2025 IMSA WeatherTech SportsCar Championship season, and they’re also both part of the five-race IMSA Michelin Endurance Cup. The first six hours of the 16 remaining hours of racing come with the second endurance edition of the TireRack.com Battle on the Bricks from the iconic Indianapolis Motor Speedway.

—By Tony DiZinno/IMSA–

With all four WeatherTech Championship classes back in action, the grid expands to 53 cars, split into 12 Grand Touring Prototype (GTP) cars, 12 Le Mans Prototype 2 (LMP2) cars, 11 Grand Touring Daytona Pro (GTD PRO) cars and 18 Grand Touring Daytona (GTD) cars.

IMSA Entry List

Total Entries: 53

As a Michelin Endurance Cup round, many endurance-specific drivers and cars return to the grid. The No. 63 Lamborghini SC63 returns in GTP, 75 Express makes its first GTD PRO start since the Rolex 24 At Daytona with its No. 75 Mercedes-AMG GT3 and five GTD teams resume (No. 19 van der Steur Racing Aston Martin Vantage GT3 Evo, No. 21 Af Corse Ferrari 296 GT3, No. 023 Triarsi Competizione Ferrari 296 GT3, No. 47 Cetilar Racing Ferrari 296 GT3 and No. 80 Lone Star Racing Mercedes-AMG GT3).

The race also includes the IMSA debut of former Formula 1 driver Logan Sargeant aboard the new-look lineup of the No. 52 PR1 Mathiasen Motorsports ORECA LMP2 07 in LMP2.

Here’s what else there is to look out for:

Fast Facts

TireRack.com Battle on the Bricks
Indianapolis Motor Speedway – Indianapolis, Indiana
Sept. 19-21, 2025

Race Day/Time: Sunday, Sept. 21, 11:40 a.m. ET
Peacock Streaming Coverage: LIVE – Flag-to-flag beginning at 11:30 a.m. (available outside the U.S. on IMSA.tv and IMSA Official YouTube channel)
NBC Coverage: LIVE – 3-6 p.m.
Live Qualifying Stream: Saturday, Sept. 20 – 3:10 p.m. on Peacock (in the U.S.) and IMSA.tv and IMSA’s Official YouTube channel (globally)
IMSA Radio: Select sessions live on IMSA.com and RadioLeMans.com; SiriusXM live race coverage begins Sunday, Sept. 21 at 11:30 a.m. (XM 206, Web/App 996)
Circuit Type: 2.439-mile, 14-turn road course
Classes Competing: Grand Touring Prototype (GTP), Le Mans Prototype 2 (LMP2), Grand Touring Daytona Pro (GTD PRO), Grand Touring Daytona (GTD)
Race Length: Six hours

Track Social Media: 

• X/Twitter: x.com/ims
• Instagram: Instagram.com/indianapolismotorspeedway
• Facebook: Facebook.com/IndianapolisMotorSpeedway

Event Hashtags: #IMSA, #BattleOnTheBricks, #ThisIsIndy

WeatherTech Championship Track Records

• GTP: Matt Campbell, Porsche 963, 1:13.672 / 119.182 mph, September 2023 (qualifying)
• LMP2: Mikkel Jensen, ORECA LMP2 07, 1:16.619 / 114.597, September 2023 (race)
• GTD PRO: Klaus Bachler, Porsche 911 GT3 R (992), 1:23.140 / 105.609 mph, September 2023 (qualifying)
• GTD: Madison Snow, BMW M4 GT3, 1:23.075 / 105.692 mph, September 2023 (qualifying)

2024 TireRack.com Battle on the Bricks Winners

• GTP: Philipp Eng/Jesse Krohn, No. 24 BMW M Team RLL BMW M Hybrid V8
• LMP2: Steven Thomas/Mikkel Jensen/Hunter McElrea, No. 11 TDS Racing ORECA LMP2 07
• GTD PRO: Laurin Heinrich/Michael Christensen, No. 77 AO Racing Porsche 911 GT3 R (992)
• GTD: Adam Adelson/Elliott Skeer/Jan Heylen, No. 120 Wright Motorsports Porsche 911 GT3 R (992)

2024 TireRack.com Battle on the Bricks Motul Pole Award Winners

• GTP: Sebastien Bourdais, No. 01 Cadillac Racing Cadillac V-Series.R
• LMP2: Nick Boulle, No. 52 Inter Europol by PR1 Mathiasen Motorsports ORECA LMP2 07
• GTD PRO: Nicky Catsburg, No. 4 Corvette Racing by Pratt Miller Motorsports Corvette Z06 GT3.R
• GTD: Mikael Grenier, No. 32 Korthoff/Preston Motorsports Mercedes-AMG GT3

Storylines

• Rolex Timepiece Title Push: The last two races of the season double as both full-season WeatherTech Championship races and Michelin Endurance Cup rounds. The championship leaders have set their eyes on a special Rolex timepiece that is awarded by Rolex, the Official Timepiece of IMSA, at year’s end to each WeatherTech Championship title-winning driver.
• Michelin Endurance Cup Double: Two Michelin Endurance Cup races remain in the schedule. Current leaders are the No. 7 Porsche Penske Motorsport Porsche 963 (GTP), No. 22 United Autosports USA and No. 43 Inter Europol Competition ORECA LMP2 07s (LMP2), No. 1 Paul Miller Racing BMW M4 GT3 EVO (GTD PRO) and No. 27 Heart of Racing Team Aston Martin Vantage GT3 Evo, No. 70 Inception Racing Ferrari 296 GT3 and No. 21 Af Corse Ferrari 296 GT3 (GTD).
• BMW’s Back-to-Back Encore? BMW M Team RLL has a chance to have a double repeat at Indianapolis. Last year, the team finished 1-2 to win its second IMSA GTP race, and at the most recent race of this season (for GTP) at Road America, the team went 1-2 for its 24th IMSA win with its No. 24 BMW M Hybrid V8. Could a 25th be in the cards at IMS for the No. 25 car?
• GTP Manufacturer Battle: Porsche Penske Motorsport holds the top two spots in the overall championship points standings in GTP. The No. 24 BMW and No. 93 Acura Meyer Shank Racing Acura ARX-06 pairings sit in third (181 points back of the lead) and fourth (213), respectively. Acura has closed the gap in the manufacturer standings to just 45 points behind Porsche, adding to that class intrigue.
• AO vs. United in LMP2: The Road America race swung the LMP2 championship points standings as the No. 99 AO Racing ORECA LMP2 07 won and the previous championship-leading No. 22 United Autosports USA ORECA sustained damage from a first-lap incident. That gives the No. 99 car a 107-point lead heading to Indianapolis, with all other LMP2 contenders from third on back over 200 points in arrears and needing the top two to stumble.
• Three Contending in GTD PRO: Corvette Racing by Pratt Miller Motorsports picked a good weekend for its No. 3 Corvette Z06 GT3.R to win its first race of the year, with its VIR triumph extending its lead over the No. 81 DragonSpeed Ferrari 296 GT3 to 53 points. Defending Indianapolis winners AO Racing and their No. 77 Porsche are still in contention but now 191 points back with only one podium finish in their last five races.
• Winward Tops GTD Again: For the second consecutive year, Winward Racing enters Indianapolis with the biggest points lead among any of the four classes. It was 284 points in 2024, and 171 this year. A clinch scenario is highly unlikely at Indianapolis, but a strong result at IMS coming on the heels of its VIR win could make Motul Petit Le Mans a lot less stressful. Conversely, a poor result at IMS could open the doors to Casper Stevenson, Kenton Koch and/or Parker Thompson and Jack Hawksworth.

Who’s Good Here?

• TDS Racing in LMP2: Steven Thomas and Mikkel Jensen were the only repeat winners from 2023’s two-hour, 40-minute edition to the expanded six-hour race in 2024 aboard their No. 11 TDS Racing ORECA LMP2 07, which they share with Hunter McElrea.
• German Brands in GTP: The two years at IMS have produced two German brands finishing 1-2 in GTP. Porsche Penske Motorsport did so in 2023 with its two Porsche 963s, while last year, BMW M Team RLL broke through with its BMW M Hybrid V8s for its first 1-2 finish as a GTP program.
• German Brands in GT: Porsche swept the GT classes a year ago, as fellow German brand Mercedes-AMG did in 2023. Last year it was AO Racing and Wright Motorsports that flew the flag with their two Porsche 911 GT3 R (992) cars, while in 2023, WeatherTech Racing and Winward Racing did so for Mercedes-AMG.

Who’s Hot?

• No. 99 AO Racing ORECA LMP2 07: Two IMSA wins for “Spike, the LMP2 Dragon” have lifted PJ Hyett and Dane Cameron to the LMP2 season championship lead and the Jim Trueman Award lead for Hyett.
• No. 81 DragonSpeed Ferrari 296 GT3: Four straight podiums including a win and two Motul Pole Awards in the last four races have propelled the Elton Julian-led team into GTD PRO title contention in its first year in the category.
• Koch and Triarsi, Triarsi Competizione Ferrari 296 GT3: Back-to-back podiums for the team’s new lineup of Onofrio Triarsi and Kenton Koch have elevated the team’s status in GTD and given Koch, third in GTD points on his own, an outside shot at the championship. The duo switches to the No. 023 Ferrari 296 GT3 this race from the No. 021 car.