Help with wheel size... - Pontiac GTO Forum
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post #1 of 3 (permalink) Old 08-15-2012, 01:03 PM Thread Starter
 
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Help with wheel size...

I'm shopping for wheels right now and need to know if this spec will fit.
I have a 68 tempest

20x8.5 size

5x120.65mm 5 lug

14mm offset

5.25 backspacing

The wheel style in eBay is boss 304
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post #2 of 3 (permalink) Old 08-16-2012, 08:05 AM
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Find and buy yourself a "Percy's Wheelrite" tool and make your own measurements. There can be variances on the same car, even the same year/make/model (previous body damage, panel alignment, etc.) that make it impossible for someone to 'guarantee' whether or not any given wheel/tire combo will fit.

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post #3 of 3 (permalink) Old 08-16-2012, 08:51 AM
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Maybe check with a local tire/wheel store and see if they have a Wheelrite you can borrow/rent. I have a friend who has one and it allowed my to stuff maximum rubber under my wheelwells.

Like Bear said too, the tires all have different profiles and bulge depending on the manufacturer and the size wheel you use. The wheel size you list should work based on the specs given but I'd want to be 100% sure before I laid out the cash.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Wheels & Tires

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