Traction control was definitly on in the P85+, the whole car was shaking but there was still a 50m track on the roadI get little chirps of wheel spin with TC on. With it off I get huge clouds of white smoke. Easier to do a burnout with the Tesla than it was with my Viper! Probably the 335's on the rear of the Viper have better grip.
335s are seriously wide tyres