WTAC 2024: 30TH - 31ST AUGUST
COMPETITOR INFO
*** ALL WTAC RULE AMENDMENTS CURRENT AS OF 4 DECEMBER 2025 ***
Competitors are reminded to check this page for the current version of their class rules and regulations to ensure compliance of your vehicle prior to submitting an EOI. For any further technical or compliance questions, please email Steve Stanley, WTAC Technical Director at technical@worldtimeattack.com
More classes, more trophies, more competition! Huge exciting international entries will be announced shortly! Don't miss on your chance to compete at the world's largest time attack festival, right here at Sydney Motorsport Park. Time to start (or finish!) those time attack builds!
2026 WTAC Competitor EOIs will open in February 2026. Be ready! First come, best dressed - no exceptions. Competitors are reminded to check for the latest version of rules and regulations prior to submitting and EOI to avoid disappointment. Pro Class is invite only.
You will need to supply:
- Competitor / Driver information
- Vehicle information
- Motorsport Australia or equivalent international race licence
- High quality images of vehicle
If you are an international competitor that would like to submit your vehicle for consideration in WTAC Pro Class or other invite-only categories, please email Ian Baker, WTAC CEO, at ian@worldtimeattack.com
For any other enquiries please contact:
General and commercial enquiries
Alain Sihaphone, WTAC Event Director - alain@worldtimeattack.com
Australian entrant enquiries
Terry Denovan, WTAC Competitor Manager - competitors@worldtimeattack.com
Technical and eligibility enquiries
Steve Stanley, WTAC Technical Director - technical@worldtimeattack.com
2026 WTAC Circuit Layout
The 2026 Yokohama World Time Attack Challenge will run on the Sydney Motorsport Park “GP Circuit”. The layout of this circuit remains unchanged from last year.
WTAC Class FAQ At-A-Glance
For prospective and returning competitors, please use the below FAQ table for a quick reference. Please note this is a reference guide only. See full class rules above for full regulations.
Category | Tuner Class | Clubsprint Class | Open Class | Pro Open Class | Pro Am Class | Pro Class |
|---|---|---|---|---|---|---|
Driver Eligibility | No FIA Silver, Gold or Platinum | No FIA Silver, Gold or Platinum | No FIA Gold or Platinum | FIA Gold and Platinum permitted | No FIA Silver, Gold or Platinum | FIA Gold and Platinum permitted |
Lexan Windows | No | No | Yes, OEM Windscreen required | Yes, OEM Windscreen required | Yes | Yes |
Active Aerodynamics | No | No | No | No | No | No |
Aftermarket Suspension Subframes | No | No | Yes | Yes | Yes | Yes |
Aftermarket Uprights | No | Yes, but must fit the OEM Components | Yes | Yes | Yes | Yes |
Custom Radiators | Yes, but must fit in the OEM location | Yes, may be repositioned up to 75mm from OEM location. | Yes | Yes | Yes | Yes |
Tyres | Yokohama Advan Neova AD09 | Yokohama Advan Neova AD09 or A052 | Yokohama Advan A050; Soft or Medium compound; | Yokohama A005 slick A60 compound | Any | Any |
Slicks | No | No | No | Yes, see Pro Open Regulations for Sizing. | Yes, see Pro Am Regulations for Sizing | Yes, see Pro Class Regulations for Sizing. |
Engine Swaps | No | Only from same OEM brand and same number of cylinders / rotors | Yes | Yes | Yes | Yes |
Billet Blocks | No | Yes | Yes | Yes | Yes | Yes |
Forced Induction | Yes | Yes | Yes | Yes | Yes | Yes |
Nitrous Oxide | No | No | Yes | Yes | Yes | Yes |
Aftermarket ABS | No | Yes | Yes | Yes | Yes | Yes |
Aftermarket Brakes | Yes, but must fit OEM mounting points | Yes, but must fit OEM mounting points | Yes | Yes | Yes | Yes |
Paddle Shift | Only if OEM | Yes | Yes | Yes | Yes | Yes |
Aftermarket Transmissions | No | Yes | Yes | Yes | Yes | Yes |
Dry Sump | No | Yes | Yes | Yes | Yes | Yes |
