Thread: What tyres on 7J 15 Rims

Right, so i have buggered up again. Bought what I thought were some 8x16 rims on e-bay. Get them home and check them out and realise they are stamped with 7Jx15 on the back. Fun. They are black sunraysias and I bought them to replace some alloys (standard boost type) on my td5 110. Heres the thing, and I know this has been asked a bazillion times before, but what are the biggest tyres I can put on these rims without rubbing on a standard car?? I was thinking maybe a 32x10.5x15 which is about the same as a 265/75/15 - although the 32 is closer to standard height according to this tyre size calculator

Tyre Size Calculator @ ExplorOz

Now I know about offset, Im just not sure how to measure it. I know this will come into play. So how do I measure it?? Any info would be appreciated. I'd like to try and fit tyres to these rims rather than re-sell them. Have done hours of searching on the forum as research and see heaps of stuff about 16 inch rim/tyre combos but not too much about 15's.

Cheers.

This is a pretty good site (probably Yankee site) for gauging tyre and rim sizes and lists what I understand to be most available sizes. Gives speedo inaccuracies as well. Considering the standard Def issue was 7.5R16 you can see how far out your speedo and economy wil be with small circumference tyres. My Def had 31 x 10.5 R15's and the speedo was way over the actual speed.
Tire Size Calculator - tire & wheel plus sizing