It all depends. When I first received my S10 Blazer it had 255/60/15 on it. It looked pretty good but the thing was slow. I put on a new pair of 235/75/15 and the tires look skinny but it has a lot more take off speed now. The 255's didn't rub at all when I got the S10 Blazer but they were worn down a good bit. And I am pretty sure 3ox9.5 would fit without a problem.
<font color=red>"Redneck" on the Internet
<font color=black>1989 S10 Blazer 4x4, 4.3, K&N, Flowmaster, 235/75/15 BFG AT
<font face="Comic Sans MS">rsharpe is correct 235/75r15's are about 29". Actually closer to 28.9". [img]/wwwthreads_images/icons/crazy.gif[/img] And I agree with 355-S10 about his recommendation of the Cooper STT's... I have a set and they're the best mod I've done to this truck so far... [img]/wwwthreads_images/icons/cool.gif[/img]</font>