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Discussion Starter #1
what is the widest tire that will fit a 17" rim on a 55 FB. i currently have 255/40/17 and they are not cutting it, thanks in advance
 

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We are going to need more info than that, and being a "FB" has nothing to do with it.

How wide is the wheel?
Offset ?
Lowered?
 

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That "55 FB" is a pretty rare car.
 

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335/35-17 is the widest 17" tire I could find.

... if you want an educated answer, need more info...
 

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Jesus...tough crowd. I'll try to help then. The link below will take you to the generally acceptable tire/rim combos for a 65-66 mustang. Of course you can go wider than what's on here, but may require rolling fenders or bodywork to fit without rubbing.

https://www.mustangdepot.com/graphics/tirefitmentguide65-66.pdf
 
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I believe 17x8 with a 255/40 is the widest you can go on a stock 65-66 car. Now if you have tubs (or mini tubs) and/or massive fender flairs, and a suspension to go with it, then you can go as wide as you want.

Figured you’re asking on the widest possible wheel on a stock suspension.


Sent from the interwebs
 
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