Quote:
Originally Posted by CaptainYooh
Thanks. So, by this calculation, if I do want the entire 30mm width out (rather than distributed evenly 15 in - 15 out), then I need rims with 137.5 + 30 = 167.5mm offset, correct?
(Just don't want to run a risk of that extra 15mm rubbing into anything inside the wheel wells)
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No.
Zero offset is dead centre. Negative offset moves the hub inward, so more wheel/tire is on the outboard side. So you would go lower (negative) to move ‘out’.
Now, you need to know what your current backspacing is, then subtract that 30mm. But don’t buy rims just because you’re concerned about possible clearance issues. Take a look and confirm. Don’t know what you’re driving, but 1.5cm on tire alone is pretty unlikely to rub.