I am looking to add new tires and wheels on my 997.2 C42,

ROHANA WHEELS RFX5 20X8 FRONT / REAR 20 X 12 (45 OFFSET)

Can anyone advice on my plans to buy Michelin sport Cup 2 tires 245/30/20 Front and 325/30/20 Rear Combo
I have Bilstein B 16 PASM coilovers on.

Thanks a lot!

 

Any comments are greatly appreciated!

 

I think that the rear tires are going to be too big in diameter. Fronts aren't much different from stocks but rears are considerably bigger. 325/25/20s may work but I'm not familiar with the right offsets for a widebody.

 

As already said, 325/20-20 is the size to go, otherwise too tall.

 

OH,, I appreciate your comments, that chart, makes look very clear, is there such a ting as a margin % that still stays within acceptable?

Thanks in advance!