what should the backspacing/offset be if i want to run 315's on a 10.5" rim? i saw that paul said his were a 6.75 backspace, but that's the only info i could find. so i'm in the dark about what offset they should be and not much better on backspacing. is there a common size that everyone runs? thanks, nate.
Backspacing and Offset!
- Thread starter 90bronconate
- Start date
BlackVert
15 Year Member
BlackVert
15 Year Member
yeah, they are targeted for mustangs, so they should be fine. fwiw, the offset for them will probably also be 24mm
Car Nut
Founding Member
Most of the combos I've seen with 17x9 and 17x10.5 wheels have the offset and backspacing as follows:
Front - +26mm (6.11" backspace)
Rear - +27mm (6.9" backspace)
It seems like the numbers above would keep the front tires (275/40) from sticking out too far and would possibly make sure the rear tires are near flush with the outer edge (315/35).
That's what I've seen so far and not much else. I'd hate to get the wrong setup and have an issue with my 2.5" catback pipes rubbing or rubbing on the actual outer fender. I'm in the same boat, but I'm also thinking about going with 17x9 all around with a 1" spacer in the rear. Not sure yet.
Front - +26mm (6.11" backspace)
Rear - +27mm (6.9" backspace)
It seems like the numbers above would keep the front tires (275/40) from sticking out too far and would possibly make sure the rear tires are near flush with the outer edge (315/35).
That's what I've seen so far and not much else. I'd hate to get the wrong setup and have an issue with my 2.5" catback pipes rubbing or rubbing on the actual outer fender. I'm in the same boat, but I'm also thinking about going with 17x9 all around with a 1" spacer in the rear. Not sure yet.
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