I get 5-7 sessions on the 3Rs before the fronts cord depending on track temperature. But I'm usually in the top 5 fastest guys at my local events. Those are full 20 minutes sessions. To fix your understeer problem on the Toyos you could experiment with tire pressure. Maybe run them 2psi lower than the rears.
I used to have the MP4S. My issue with them was poor steering feel and too soft for spirited driving. My favorite tires are the Falken RT660. (305/30/19 and 315/30/19). These run wide so definitely sits meaty on our wheels. Easily the best steering wheel and grip of any tire I’ve had on the street and the best part - you can track them as well! Trust me you won’t regret it. Please also share your track alignment as well.
I have driven the cup2 on track not cup2r. Both of those cup tire are very good on track. But i haven’t personally used a set on track. The supercar3 seem similar in performance to cup2.
Thanks! I have the same rims on a 2021 LT1 and I run 33-35 cold rear- front so Just getting an idea what others are running .. I have Michelin Pilot 4s they have a good road feel but generate a bit of road noise Love them other than that.
