Howdy all,

Im gonna be getting some 17's for the magna soon and im just wondering what size profile tyre i should be putting on.

The rims are 17x7.5.

Should i be going 235/40/17 or 235/45/17? Or should it be a different profile altogether?

Thanks in advance chaps!

first check with insurance... some places only allow 17*7
I had to change wheels two weeks after getting new ones, was a costly affair.

P.s i hate the NRMA

anyways, i got 235/45R17s and they go fine. i think 40s may be alittle small for 17s

http://www.miata.net/garage/tirecalc.html

very useful, got it off the forum