Tire size for cobra r's on a 90'

[moosejaw]

Which rims did you buy? You really need a different backspace on the rear. About a half inch more 6.5" or so. If you bought Ford Cobra R R58 rims they should only go on the front. The M179 rim is backspaced for the rear.

If you are using a 9.5" width rim the 235/45/17 will not be wide enough to cover the rim. If you did buy the Ford Cobra rims use the 94-95 Cobra tire size. 255/45/17 at all corners.

The 275 will fit to a limit. You WILL need to roll the wheel well. Just because it fits on level ground doesn't mean it won't hit on a angled driveway approach. With your current backspace on the rear you will have trouble with a 255 tire. You should remove the Quad shocks. Exhaust can be adjusted a little if it is in the way, but it shouldn't be.

Mike



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