National Staff Greg G. Posted January 20 National Staff Share Posted January 20 Technical Bulletin 1-19-23 - Applies to ST1-ST6 and TT1-TT6 Re: Continental Extreme Contact Force & Hankook Ventus RS4 The Continental Extreme Contact Force and the Hankook Ventus RS4 tire models will both move from the +1.0 Mod Factor group to the +1.6 Mod Factor group as below. 6.5.2 (ST1-4 Rules) / 6.3.2 (ST5-6 Rules) Tire Type: BFGoodrich g-Force Rival, Continental Extreme Contact Sport/Force, = +1.6 Cooper RS3-R, Falken Azenis RT615K+, Hankook Ventus RS4, Maxxis Victra RC-1, Maxxis Victra VR-1, Michelin Pilot Sport 4S, Nankang AR-1/ NS-2R 180, Nitto NT01, Toyo Proxes R1R/ R888/ R888R/ RA-1/ RR, Valino VR08GP 1 Quote Link to comment Share on other sites More sharing options...
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