What spare wheel/tire will fit 13" C5 Brakes? - Team Camaro Tech
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post #1 of 7 (permalink) Old Nov 26th, 16, 06:56 AM Thread Starter
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What spare wheel/tire will fit 13" C5 Brakes?

I recently swapped out my OEM 11" front discs for 13" C5 discs and calipers. While I've not tried it, I'm sure my OEM 15" Ralley Wheel spare won't fit. I don't want to buy another matching 17" wheel and would just like an inexpensive spare wheel and tire that will fit (skinny dounut might even be preferable). For those of you that have upgraded your brakes to a larger disc, what did you do for a spare tire? I'd like to find something from a wrecking yard. Any guidance will be much appreciated.

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post #2 of 7 (permalink) Old Nov 26th, 16, 08:37 AM
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Re: What spare wheel/tire will fit 13" C5 Brakes?

This is one of those *issues* that arise when doing modifications to the original design (upgrading to 'big brakes'). Spare donuts from C4 Corvettes will 'work' but a lot (most?) people rely on 1) 'run flat' tires, 2) green slime, or 3) their 'phone' (to call a friend)..

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post #3 of 7 (permalink) Old Nov 26th, 16, 10:54 AM
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Re: What spare wheel/tire will fit 13" C5 Brakes?

04-06 GTO spares work. Thats what I have, hopefully haven't had to use it yet ;-).

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post #4 of 7 (permalink) Old Nov 26th, 16, 02:24 PM
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Re: What spare wheel/tire will fit 13" C5 Brakes?

Quote:
Originally Posted by 130fe View Post
04-06 GTO spares work. Thats what I have, hopefully haven't had to use it yet ;-).
Did you test fit it? The center bore is too small on the ones I have and I had to open them up a little.

Don

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post #5 of 7 (permalink) Old Nov 26th, 16, 08:59 PM
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Re: What spare wheel/tire will fit 13" C5 Brakes?

If you use the 17" GTO spacesaver spare bolt pattern is 5x120mm and the C5/C6 conversion GM hub is 5x120.65mm. Some use hub centric ring & even drilling out the lug holes slightly while others don't take a chance with the .65mm differential . You're call on whether to use them or not.
If you're looking for a inexpensive rim, some older 18" BMW M Parallel 37 rims could work as well but has the 5x120mm bolt pattern again/ check the offset. Some use these for PT look that don't want to spend the hefty price with larger wheels.
Another last ditch option for myself ( since all my wheels are 18x8 what I could do in case I'm f#*ked) but will only work if you have drums on the back is to move one of the rear wheels to the front til I get to a tire shop and put my rally wheel spare on the rear. Open lug nuts sometimes are required cause of the longer studs.
Phew! Enough said I think I'll look for a single 18" wheel that will work as a spare and save myself the bull.........
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post #6 of 7 (permalink) Old Nov 27th, 16, 06:01 AM Thread Starter
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Re: What spare wheel/tire will fit 13" C5 Brakes?

Sounding like it's back to the green slime option or call the flatbed. Although I do still have the rear drums, I don't think my 275-40 will work up front if I have to make any turns on the way home (highly likely). I have a fairly new 15" tire on the ralley wheel spare sized to match the rear tires in diameter so I wouldn't burn up my posi running it any distance. If I go with a 17 or 18 to fit the front, I'll need to buy a tire too. Man, this never ends does it? These things are really a money pit and carrying 2 spares is nuts. That green slime is sounding better and better, wonder what kind of mess that makes?

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post #7 of 7 (permalink) Old Nov 27th, 16, 06:12 AM
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Re: What spare wheel/tire will fit 13" C5 Brakes?

It's tire diameter that affects the posi not wheel size.

If you decide to carry a spare the GTO is probably the best option. Now you will also need to carry a jack and lug wrench.

Another option is to use run flat tires.

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