Flat spots - car sitting 5 yrs - Team Camaro Tech
Wheels & Tires What fits what?

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post #1 of 8 (permalink) Old May 24th, 18, 03:11 PM Thread Starter
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Mike
 
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Flat spots - car sitting 5 yrs

So after the car sitting for about 5 years, I got my new Tremec installed and took her for the first ride. I must have some flat spots. Was shaking a lot.... But by the time I brought it home it was shaking much less.

You guys think it will work its way out? Should I give them a good "cooking" lol?

They are roughly 10 yrs old, Nitto555. No cracks or dryrot. Not worried about blowout.

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post #2 of 8 (permalink) Old May 24th, 18, 03:27 PM
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Lynn
 
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Re: Flat spots - car sitting 5 yrs

While personal results vary wildly, at least according to the stories posted, and there are plenty of anecdotal stories about using old tires, the industry standard is to use tires no longer than 6 years from the date placed in service AND no longer than 10 years from date of manufacture. You may not be worried about a blowout, but I had a tire come apart from the inside out that had no weather checking at all.

I have two sets of tires for my Z. The set that is not in use is always stored in dark bags to keep any light (UV) from getting to them. Regardless of how stored, yours are on the very edge of their useful life. If you will be driving the car at highway speeds, you might want to reconsider. So, for what its worth, my recommendation would be new tires.

Cooking them won't help. If you are hell bent on driving on them, just normal use with the proper amount of air pressure will most likely return them to "round" as good as anything you can do. After driving about 100 miles, I would recommend having them balanced.

Lynn
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post #3 of 8 (permalink) Old May 24th, 18, 04:04 PM
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Al
 
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Re: Flat spots - car sitting 5 yrs

For safety sake I would replace them.
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post #4 of 8 (permalink) Old May 25th, 18, 05:27 AM
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Chris
 
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Re: Flat spots - car sitting 5 yrs

Reputable tire shops won't do anything for you with 10 year old tires except remove them from the rims. They won't touch them, air them up, balance them or anything else due to the liability of knowingly sending a customer out on old, dangerous tires. My car had old tires on it when I got it, but I had not thought to check that. One of the fronts blew out instantaneously through a long hole, there was no slow leak down warning, all air was out with a big bang. I had not hit anything and there was no evidence of puncture. Fortunately I'd just taken off from a traffic signal and was only going about 30 mph, not the 60+ mph I'd been traveling a few minutes earlier on a narrow 2 lane road with deep ditches on either side; that would have led to a completely different outcome. When I got new tires I looked at the inside of the old ones and there were cracks, but none visible on the outside, strange. Get new tires unless you plan on putting around town at 35 mph or less, but I bet with a new TKO that's not your plan.

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post #5 of 8 (permalink) Old May 25th, 18, 01:27 PM
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T.C.
 
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Re: Flat spots - car sitting 5 yrs

I would do burnouts til they were round again!
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post #6 of 8 (permalink) Old Jun 2nd, 18, 06:03 PM Thread Starter
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Mike
 
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Update:

Just put two new tires on the back. With the car on jack stands I can still see a little bounce in both tires... Like a little hop, in the same spot, on both sides.

What gives?

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post #7 of 8 (permalink) Old Jun 2nd, 18, 06:16 PM
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John
 
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Re: Flat spots - car sitting 5 yrs

Bent or out of round rims.

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post #8 of 8 (permalink) Old Jun 2nd, 18, 07:04 PM Thread Starter
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Mike
 
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I initially thought the same. But its the exact same spots on both sides, even if I unbolt one rim and move 180 degrees and bolt back on.

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