For the record: 245 and 315 tires

I built these wheels up for the 512TR I had. P-zero Corsa tires, 245 35 18 front and 315 30 18 rear on stock 355 wheels. It amounts to one size up on the TR, but is really two sizes up on the 355. They are very close in diameter to stock, but obviously wider. I put them on with no spacers, fenders are stock. I could not get them to rub in fairly aggessive mountain driving. They STICK. The combo of the Corsa rubber and the huge foot print is pretty impressive. I think they may actually be too sticky for an F1, as that full throttle 1-2 shift puts a lot of stress into the gearbox when the rear tires are glued down. I will only use them on dry track, where I really don't use the 1-2 or 2-3 shifts. Just mounted Bridgestones for the street (stock size) but I thought I would post this in case someone is interested.

BTW, they look really, really fat in person
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Black, with a high quality finish (autozone spray cans ).

Sorry, I took them off, so no side shot. I'll put them back on in the fall for VIR.

 

I agree with all of this. I had a hellova time finding a set that would fit the rims. These should last me two years or so with the way I drive on track (sorta like someone going for groceries).