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Discussion Starter #1
trying to swap out my stock 15" wheels for 18" wheels.

what is the maximum wheel width dimension possible on the rear end without requiring modification to wheel wells?

note: i'm running a stock 1968 pontiac 10 bolt rear axle.

thanks for your help.
 

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I run a 9 1/2 inch wide wheel with a 12.5 x29 MT ET Street. It is the max tire I could fit in there.

I'm sure with a resto mod you are wanting a 17" or larger wheel and tire. I would recommend a Percy's Wheel Rite to figure out the max wheel and tire setup you can run.
 

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:agree Get yourself a Percy's Wheel Rite tool (google it). And use it to measure. That's the best way. There's more to it than just width. You've got to get the correct back-spacing too.

Bear
 
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