[84turbo]

what size rear tire will fit on a 98 gt with a 10.5 wide wheel

[2Manystangs]

you mean max width? Or what equates to 10.5"?...I'd say about 265-285...254 mm/inch so you can do the math and pick what suits you.

[ITLRUN]

I don't know if this will help you or not, but I have 305X35XZR18's under my 96 SVT Cobra Convertible with quad shocks removed. I don't really know, if they would fit with the quad shocks in place. I've never put them on, with quads in place, Mike. SCT Tuner.

[84turbo]

well we put cobra r rims on with 245/45/17 onthe front and 275/40/17 on the back the qoud shocks looked like they would rub so we took them off and replaced the rear shocks with koni yellow sport shocks hopefully that will help offset not having the quads.

but anyways they fit and look great probably could have fit 285's, maybe next time.