Please Select your Drivetrain

 
  • RWD (0)
  • FWD (-1)
  • AWD (2)

Tires are grouped by real-world performance pace, not just treadwear rating. Select the option that best matches your tire’s compound; when in doubt, choose the higher modifier for fairness. NOTE: NO EXTREME PERFORMANCE ALLOWED IN LA5*

 
  • 300+ (Michelin Pilot Sport 4S, Continental ExtremeContact Sport 02, Bridgestone Potenza Sport, Goodyear Eagle F1 Asymmetric 6) (0)
  • Baseline 200 TW (Hankook Ventus RS4, Continental ExtremeContact Force, Yokohama Advan AD09, Maxxis VR-1, Vitour Tempesta Enzo V-01R, Super Car 3 (non-R)) (2)
  • Fast 200 TW (Falken Azenis RT660+, Nexen N’Fera Sport R, Kumho Ecsta V730, Maxxis Victra VR-2) (4)
  • Elite 200 TW (Bridgestone Potenza RE-71RS/RZ, Yokohama Advan A052, Nankang CR-S (v2), Michelin Pilot Sport Cup 2 (standard), Vitour Tempesta P1, Nankang AR-1, Hoosier Track Attack Pro) (6)
  • Extreme Performance (Pirelli Trofeo R, Goodyear Eagle F1 SuperCar 3R, Yokohama Advan A055, Hoosier A7/A8, Hoosier R7/R8) (8)
  • Racing Slicks (Pirelli DH, Hoosier S100/S80, Michelin S9L, Goodyear Eagle Racing Slick) (10)

Select the largest tire width on your car. Ex: staggered 285 Front / 305 Rear is a 305 mm option.

 
  • <200 mm (0)
  • 205 mm (2)
  • 215 mm (3)
  • 225 mm (4)
  • 235 mm (5)
  • 245 mm (6)
  • 255 mm (7)
  • 265 mm (8)
  • 275 mm (9)
  • 285 mm (10)
  • 295 mm (11)
  • 305 mm (12)
  • 315 mm (13)
  • 325 mm (14)
  • 335+ mm (15)

Aero is scored by total aerodynamic impact. OEM lips and small spoilers are free, factory high-wings or mild aftermarket pieces add a few points, and full aero packages with multi-element wings, body changing aero, and splitters add the highest modifier. View our Rules for specifics.

 
  • Stock/OE trunk lid spoiler and/or front splitter (or none) (0)
  • Factory high wing or functional splitter (e.g., GT3, ZL1 1LE, Civic Type R). (3)
  • Single added element such as a rear wing & splitter past front axle centerline (street-level kits). (4)
  • Combined components — Multi-element wing and splitter, diffusers, or undertrays, and body modifications from OE for aero purposes. (6)
?

Example: 300 WHP - 10% driveline loss = 270 WHP

Enter wheel horsepower (whp). A dyno sheet is required for any vehicle with modifications beyond intake and exhaust. If you’re using the manufacturer’s advertised or OE number, apply a 10% drivetrain loss to estimate wheel horsepower. (Note: Drivetrain loss adjustment is not applicable to EVs.)

 
  • <150 HP (0)
  • 150-174 HP (3)
  • 175-199 HP (6)
  • 200-224 HP (9)
  • 225-249 HP (12)
  • 250-299 HP (15)
  • 300-349 HP (20)
  • 350-399 HP (25)
  • 400-449 HP (30)
  • 450-499 HP (35)
  • 500-549 HP (40)
  • 550-599 HP (45)
  • 600+ HP (50)
?

Please use stock curb weight (found on Google) if you do not have an official scale sheet.

Please Select the weight of your car WITH driver

 
  • < 2000 LBS (45)
  • 2000-2099 LBS (16)
  • 2100-2199 LBS (15)
  • 2200-2299 LBS (14)
  • 2300-2399 LBS (13)
  • 2400-2499 LBS (12)
  • 2500-2599 LBS (11)
  • 2600-2699 LBS (10)
  • 2700-2799 LBS (9)
  • 2800-2899 LBS (8)
  • 2900-2999 LBS (7)
  • 3000-3099 LBS (6)
  • 3100-3199 LBS (5)
  • 3200-3299 LBS (4)
  • 3300-3399 LBS (3)
  • 3400-3499 LBS (2)
  • 3500-3599 LBS (1)
  • 3600-3799 LBS (0)
  • 3800-3999 LBS (-2)
  • 4000+ LBS (-4)

Please Select your engine displacement size

 
  • Manual (0)
  • Automatic / DCT (2)
  • EV (4)