Balancing Tires: True or False - Ferrari Life
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  • 1 Post By arkferrari
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post #1 of 12 Old 03-15-2019, 10:22 PM Thread Starter
 
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Balancing Tires: True or False

I have Pirelli P-zero tires with manufactured date of 2007 ; low miles, stored indoors, no visible cracking. Speed above 60 mph causes steering wheel vibration. Reputable tire shop tells me that tires with that age are not capable of being balanced due to physical changes in the rubber. True or False?
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post #2 of 12 Old 03-16-2019, 04:27 AM
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I’m no expert, but find that hard to believe.
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post #3 of 12 Old 03-16-2019, 06:28 AM
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If they were "stored" on the car during this time, they've probably developed flat spots.

If they were stored off the car, they still may have developed flat spots, depending on how they were stored.

I can't comment as to chemical changes in the rubber causing vibration, but I would think aging and hardening of the rubber wouldn't contribute to a smooth ride.....

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post #4 of 12 Old 03-16-2019, 10:13 AM
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Moot question. It is unwise to consider driving on 11 year old tires.

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post #5 of 12 Old 03-17-2019, 01:20 PM Thread Starter
 
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Originally Posted by tazandjan View Post
Moot question. It is unwise to consider driving on 11 year old tires.
Melania Trump is 48 years old, low mileage, pampered with no visible cracks; would you not consider "driving" her?
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post #6 of 12 Old 03-17-2019, 06:56 PM
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Really dumb comment.

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post #7 of 12 Old 03-18-2019, 02:04 AM
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Quote:
Originally Posted by arkferrari View Post
I have Pirelli P-zero tires with manufactured date of 2007 ; low miles, stored indoors, no visible cracking. Speed above 60 mph causes steering wheel vibration. Reputable tire shop tells me that tires with that age are not capable of being balanced due to physical changes in the rubber. True or False?
arkferrari,
the comments of cribbj are very pertinent, and correct...

about : "with that age are not capable of being balanced due to physical changes in the rubber" i think is faulse, balancing is a question og center of gravity, of mass not of chemical compositon of the rubber....

But i think your tyre shop intend another thing like that: if tyres was storaged in bad way and have flat spot or ovalization, for sure if you make balancing today mabe from some km need other balancing because ovalization and flat spot sure will change during drive, but this problem is present also on tyres wit 3-5 years if was storage in bad way, example car parked in the gagrage for more months ....

As end, a 11 years old tyres for me are good only if are installed in a collector car that use very less and a low speed, otherwise if is a sport car that use often is better replace with new tyres, in general i replace max 5/6 years.


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post #8 of 12 Old 03-19-2019, 10:23 AM
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Here's some actual science on why old tires shouldn't be used. Although I'm not certain that "unable to balance" is accurate, a better explanation would be "we don't want to take unnecessary liability risks."

https://www.ntsb.gov/news/events/Doc...el_4b_Kane.pdf

Keep in mind that many "complicated", "no one can find out why my car pulls, shakes, is unstable at speed concerns" can often be traced back to old, "new looking" tires that are "just fine."

YMMV

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Last edited by David @ FluentInFerrari; 03-19-2019 at 03:29 PM.
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post #9 of 12 Old 03-20-2019, 01:06 AM
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Quote:
Originally Posted by David @ FluentInFerrari View Post
Here's some actual science on why old tires shouldn't be used. Although I'm not certain that "unable to balance" is accurate, a better explanation would be "we don't want to take unnecessary liability risks."

https://www.ntsb.gov/news/events/Doc...el_4b_Kane.pdf

Keep in mind that many "complicated", "no one can find out why my car pulls, shakes, is unstable at speed concerns" can often be traced back to old, "new looking" tires that are "just fine."

YMMV

What you said is correct David

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post #10 of 12 Old 04-08-2019, 07:49 PM
 
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Agree 100% Even though rubber is a cured material, it ages and will incur a permanent set. You can check the date of manufacture, the manufacture date can be compared to the company's build date and company expiration date.
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post #11 of 12 Old 04-09-2019, 08:03 AM
 
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12 year old tires? Scary

Though the tire look totally brand new it is likely compromised. My tires are slightly over 5 years old and I am worried. I would not risk the chance, even if it is small, to drive on 12 year old tires. Sort of reminds me of the Carrera-GT Paul Walker died in; it had 9 year old tires! The tires alone didn't cause the accident but can be pretty sure didn't have the traction which might have avoiding the skid and subsequent fatal accident.

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post #12 of 12 Old 04-18-2019, 02:13 PM Thread Starter
 
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All replies are appreciated. I am replacing all tires tomorrow.
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