I have a quick question for anyone who knows anything about tire and wheel combinations.

I have a set of TT2's in the 17X 9.5 variety and I'd like to put a 245/45/17 size wheel on there. ( since it is the exact same wheel just smaller section width) Then the 315/35/17 that I have on the back.

Now my question:

A 245/45/17 from every company is rated to a 9.0"wheel. A 245/40/17 is rated up to a 9.5". How can the same width tire not be rated up to the same wheel because of sidewall height?

I called BFGoodrich tech line today but they couldn't answer that question. I'm hoping someone here can.

Thanks

~Jim~

 

a 245 on a 9.5" rim is gonna be stretching to fit.

why not go with a 275/40/17 that is the most common wheel for the 9-9.5" x17" rims

thats what came stock on the SS/Ws6 rims

and they are the same size around as your 315s out back

 

275/40/17 is what I ended up going with. It fits on the 9.5" rim nicley and is close in size to the 315.

Thanks for your help.

~Jim~