Quote:
Originally Posted by mahout
Based on the 8 Fits we have equipped with aftermarket wheels we say 42 is the lowest offset allowed if you don't drop the Fit; 45 mm if you do.Some of these were complete wheel replacements for offsets below 42 mm. Expensive.
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The key to avoiding wheel bearing and other engineering issues is to keep the back space equal to the original. The OEM Fit alloy is 15x6 with 55 mm (2.16") offset so the back space is 6/2 + 2.16 = 3 + 2.16 = 5.16"
A 7" rim on a wheel with 42 mm (1.65") offset has a backspace of 7/2 +1.65 = 3.5 + 1.65 = 5.15" so the wheel bearings are not realy stressed out of spec limits.
The reason for the 45 mm offset when dropped is merely to avoid rubbing problems, at least for tires up to 205 section. (We think the 17x7/205x17 conversion looks best.)
There is a possible way to avoid rubbing on dropped Fits with 42 mm offset wheels by making the shocks or springs so stiff there isn't really compression of the rear suspension. The best in my opinion is using Monroe AirLift MA-811 rear shocks (see the suspension posts). Stiffer springs will have an unpleasant ride.
Good luck.
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I will just chime in as well, I ended up getting rid of my +42 offset 17" rims in favor of a +45.... also Illusive had some rubbing issues with his +42 offset 16" rims before as well. 42 is close, certain tires will work while other will give you problems.