I have 17 inch web spoke with the Dunlop SP Sport 01 DSST 84V rating, the sticker on my door sill says under 100MPH 38 psi over 100MPH 41 psi
I have had them at 41 psi cold pressure since the car was new and now have 7,000 mies on it, and I do auto cross and track race the car. I have felt the presser and handleing was just fine, but I do have an H-copmition rear sway bar. The only other
mod I have down was the
JCW stage one up grade. Last time I tracked it out of a starting line up of 42 cars I came in fourth behind a corvette, a lotus elsie, and a lotus exige, I could ride there rear bumper in the corners but they left me behind on the straights. I will definately be adding a few more HP.
The Mini is quite an amazing car.
Dennis