tucking in wheelwell - Team Camaro Tech
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post #1 of 5 (permalink) Old Sep 1st, 10, 11:09 AM Thread Starter
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tucking in wheelwell

WANTING THE PRO-TOUR LOOK,,,Need some help on tucking a tire up in the wheel well,,, WELL this is my first time buying a 2 generation 1973 z28, the rears are boyds 17 inch with the low profile tire, I just hate that look, so do i have to mini tub the year of car to tuck up the tire ,,what is thee tallest tire i cam go on the rear and the front.. thanks alot for all info
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post #2 of 5 (permalink) Old Sep 7th, 10, 10:48 PM
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Re: tucking in wheelwell

jjjcamaro,

some applications require a mini-tub. But since you have a 2nd gen, you can usually get much more tire in the back than a first gen, and that is a good thing! The main thing you want to look at is the overall diameter of the tire. A 17" wheel as you know is 2" taller than a 15" wheel. In order for the tire to fit without mini tubbing you have to keep the overall diameter around the same as to what the car came with from the factory. The base Camaro's in the 1960's all the way through the 1980's received 14" wheels.

Case in point: The 5.7L and some 5.0L IROC-Z's came with P245/50/R16....I have seen guys rolling with P275/40/R17 all day long on third gen Camaro's and Firebirds...FWIW, the 1990 Pontiac Firehawk 5.7L by SLP ran P245/70/R17. The overall tire diameters? 25.64 for the 16" and 25.66 for the 17's..The OD is important for your speedometer as well. A P215/65/R15 tire also came on Z28's from 1982-1987. The overall diameter was 26.00...... I run a P235/60/R15 all the way around on my 1969 and that has an OD of 26.10.....

Question: what size tire is on there now? That will assist me in trying to help you out as best as I possibly can.

Thanks!!

SSG&H

1) 1969 Camaro RS 396 TH 400, 12 bolt 3:73 sold 1994
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2) 1984 Z28, 5.0 H.O. T-Tops, G92 3:73, sold 1994
3) 1988 5.7L IROC-Z, sold 1994
4) 1969 Camaro bought 2006, back on the road in 2010
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post #3 of 5 (permalink) Old Sep 8th, 10, 04:46 AM Thread Starter
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Re: tucking in wheelwell

Wheels/Tires:
17x8 5-spoke gray / machine finish aluminum wheels with clear powder coat
Riken Raptor high performance tires: 255/50R17 rear & 235/45R17 front
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post #4 of 5 (permalink) Old Sep 8th, 10, 06:34 AM
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Re: tucking in wheelwell

The rear size of P255/50/R17 has an Overall Diameter of 27.03. A P255/60/R15 which many 2nd gen drivers ran on the back of their cars 15-25 years ago has an OD of 27.04...... I have seen some 2nd gens work with P255/70/R15 which is an OD of 29.05...That sidewall height is 1.02" taller than a 17" tire and 2.01" taller than the 60 series 15" tire I mentioned directly above.

The front size of P235/45/R17 has an OD of 25.32....By the late 1970's 2nd gen Z28's and Trans Am's were originally equipped with P225/70/R15 all the way around which has an OD of 27.40 and a sidewall height which is 2.04" taller than what you have now. Uniroyal was the OEM manufacturer in most cases for P225/70/R15.

That's a great looking 2nd gen and I like what you have on there now.


Ok here is the deal/scoop...... The pro-touring look which you like is basically exactly what you have....Wider treadwith and lower aspect ratio's (aspect ratio's = sidewall height). You may be able to put an early 1990's Corvette and even a 2002 4th gen Camaro sized P275/40/17 in the back but all that will do is give you a wider tread with and lower profile tire....It does look mean and tough IMHO to see a P275/40/R17 on the back of a 2nd gen. If you are looking for a slightly larger tire you may be able to get P245/45/R17 or P255/45/17 up front. You may be able to get P255/60/R17 in the back of the vehcile as that size had an OD of 29.04 which is only .01 less OD than a P255/70/R15.......... A 255/60/R17 will give you a taller tire and fill up the wheel well. There are many luxury touring SUV's out there running P255/60/R17 today in 2010 so it should not be too hard to find. A P255/50/R17 will also fill up the fronts....It may be tight clearing since the OD is 26.6, but if a P225/70R15 at 27.04 OD will work then that size should be ok too as OD is smaller.


What I would recommend doing is going to a reputable local tire shop near your house. Ask them if they have P255/60/R17 in stock. Then place that tire next to your rear tires in a mock installation without installing the tire. I would also do that with the larger front 17" sizes I mentioned. That will help give you an idea of it will look like without paying to mount, balance and install them. There are plenty of 2nd gens out there with 18" tires & wheels. But if you are not a fan of the low profile look you may not be happy with 18's or even 19's....17's will give you a large selection to choose from. The tire in a 17" will not look as tall as the old school guy running the P225/70/R15's but your car will handle and probably brake much better in dry weather with the pro-tour style 17" tires you have now vs the 15's...Personally I like a P275/40/R17 on the back and a P245/45/17 on the front, but that's just me.

Here is a helpful link which will help you calculate different sizes and diameters. http://www.1010tires.com/TireSizeCal...?action=submit

1) 1969 Camaro RS 396 TH 400, 12 bolt 3:73 sold 1994
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2) 1984 Z28, 5.0 H.O. T-Tops, G92 3:73, sold 1994
3) 1988 5.7L IROC-Z, sold 1994
4) 1969 Camaro bought 2006, back on the road in 2010
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by South Side Goons & Hitmen; Sep 8th, 10 at 12:51 PM. Reason: P255/70R15 29.05 OD.........
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post #5 of 5 (permalink) Old Sep 8th, 10, 11:25 AM Thread Starter
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Re: tucking in wheelwell

I thank you for the info and your time, CHEERS
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