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18 16
IMSA Weathertech Championship 2026
IMSA Weathertech Championship 2026
Gr.1 - GTP 2,091
18 8
Gr.3 - GTD PRO/GTD 2,241
14 8
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IMSA Weathertech Championship 2026

Solo event at on s with 11 Rounds.
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Car Categories

Gr.1 Gr.3
Willow Springs International Raceway - Big Willow
WeatherTech Raceway Laguna Seca
Tokyo Expressway - South Clockwise
Watkins Glen - Long Course
Circuit Gilles-Villeneuve

Description and Instructions


IMSA WEATHERTECH CHAMPIONSHIP 2026

A full year Gr1+Gr3 Multi-Class series, featuring 1-2 Hour Races based on the IMSA WeatherTech Championship.

Practice rooms are open in the lobby during race week.

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Schedule (PM Eastern Time)
8:00 Practice Room
9:30 Race Room Opens
10:00 Race Start

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Room Settings:
Weather: Random
Variable Time Speed Rate: Varies
Time of Day: Varies

Race Settings:
Start Type: Rolling
Grid Order: Fastest First
BoP/Tuning Prohibited: On
Car Settings: No Limit
Boost: Off
Slipstream Strength: Real
Visible Damage: On
Mechanical Damage: Heavy
Tire Wear: 3x
Fuel Consumption Rate: 3x
Refueling Speed: Varies
Grip Reduction Off Track: Real
Race Finish Delay: 180 Seconds

Regulation Settings:
Useable Tires: Racing
Useable Tire Types: S/M
Required Tire Type Change: None

Penalty Settings:
Shortcut Penalty: Weak
Wall Collision Penalty: Off
Correct Course After Wall Collision: Off
Car Collision Penalty: On
Pit Lane Line-Cutting Penalty: On
Ghosting During Race: Off
Flag Rules: On

Driving Options Limitations:
Counter-steering Assist: Prohibited
Active Stability Management: Prohibited 
Driving Line Assist: Prohibited
Traction Control: No Limit
ABS: No Limit
Auto-Drive: No Limit

Car List

Gr.1 - GTP

Gr.3 - GTD PRO/GTD