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  #1 (permalink)  
Old 06-21-2011, 07:53 AM
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Default What size wheels and tires

I am starting my build and am looking for wheels and tires. My car will not be raced and will be used as a weekend driver. It will have a 351w with about 350hp. My kit is a street beast.

What size wheels and tires should I run?

Thanks.
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Old 06-21-2011, 01:59 PM
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295-50 X 15 Rears on 9" Halibrand style rims

245-60 X 15 Fronts

Back space is going to be the thing you need to find out. On your fronts I would guess 3 1/2" to 4" back space. Rears depending on whether you have had your rear end narrowed or not could be anywhere from 4 !/2"-5 1/2" back spacing.

Or you could go with 17" wheels and tires. Regardless these things seem to ride and handle best with wheel and tire combo of 26" diameter.

Good Luck.

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Old 06-21-2011, 06:14 PM
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There are a host of threads about this. Here's the recap: The 17s have more tire options; the 15s are more period correct and ride a little smoother but finding good rubber can be a PITA.

I have 17" wheels with Kumho Ecsta XS 275/40/17s in the front and 335/35/17s in the back. I did notice a significant difference in gained straight-line traction with the Kumho 335s versus the smaller Yokohamas I used to have, but that is partially due to the tire compound. Of course, just to mix things up a little, I am planning to get some 15s, maybe with some Mickey Thompsons, to change the look occasionally. I have driven some cars with the Avons, and, like divorces, they cost a lot because they are worth it
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Old 06-22-2011, 06:14 AM
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Most likely going to go with a North Racecars conversion to 5 lug for my 8.8 so not sure I will be shortening the axles.

I leaning towards 17 due to better choices of tires. I have a old bronco with 15's and there are not many tire choices.

How wide do the rims need to be? 8.5 inch's?
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Old 06-22-2011, 10:24 AM
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Mine are 17 x 9.5" front and 17 x 11.5" rear.
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Old 06-22-2011, 10:28 AM
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Strike that--I think they are 8.5" and 10.5".
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Old 06-22-2011, 02:11 PM
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I prefer the "look" of the 15's, but I wanted bigger brakes too. I'm with everyone else on better tire availability in 17's vs. 15's. Bigger brakes and better tire selection won me over to 17's: 245/45 fr on 17X8 and 315/35 rr on 17X11, both w/4" back space, but that may or may not work on yours.
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Old 06-26-2011, 10:29 PM
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Greetings from Arizona
I just bought my Cobra 3 weeks ago...had been sitting outside since 06, It has BFG 295/50r15's on rear and 265/50ri5's on front. Haven't found front tires in that size. I bought a pair of 235/60r15's to try. The old bfg's have lots of tread but are very hard from sitting in the sun. Jay
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