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Old 03-24-2019, 09:21 AM   #11
BoxMann
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Join Date: Nov 2018
Location: NY Suburbs
Posts: 339
Quote:
Originally Posted by mgfranz View Post
If your tires are 8 years old, especially being PSS, there is a good chance that you have some damage to either the internal tread or a sidewall beginning to fail. The PSS are so soft. When I had the set of PSS on my car, I noticed similar conditions, but even more concerning was a vibration at around 90-100mph. After checking the date of the tire and found them to be 8 years old I swapped them out and no more issues.
Thank you. That's very helpful.

FWIW they're the A/S tires not the Max Perf Summer, and not as soft as the Summer tires. There is no visible dry rot or other damage, but I hear you on the possible internal damage.

Did you get a vibration at speeds below 90 - 100? Besides the initial flatspot-like thumping at low speeds, I get a shimmy at different speeds between 55 - 90 (haven't gone over 90 yet)
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2004 Boxster S, 6 spd, Triple Black
1986 944 Turbo (sold in 1988)
Since then, a 300ZX, a few BMW 3 Series, a few VW's

Last edited by BoxMann; 03-24-2019 at 09:23 AM.
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