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Matching tires on a 964

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Old 04-14-2010, 10:10 PM
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hans57
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Default Matching tires on a 964

Stupid question of the day:

How important is it to have matching tires on my 964? The reason I ask is, one of my rears blew out last week or so and I replaced them with a pair of Bridgestone's recommended by a Porsche publication. The fronts are still Toyo's. I would prefer to go out and get the fronts replaced with the matching Bridgestone's, but that is another $400.00 in which I need to convince myself I need to spend.
Does a setup like this affect the handling in such a way to be unsafe?

The other thing is the Toyo's have a date code of '02. Is that too old?

Thanks!
Old 04-14-2010, 10:27 PM
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Marc Shaw
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"In 2001, the British Rubber Manufacturers Association strongly recommends that unused tires should not be placed into service if they are more than 6 years old. In 2005, Ford Motor Company announced a six (6) year recommendation as well, regardless of tread wear. In October, 2005 Bridgestone Firestone recommended that all tires should be replaced after 10 years. Continental and Michelin soon followed, echoing the 10 year period set forth by Firestone."

If it were me, I'd just replace the Toyos. Tire condition also does not just depend on age, but also things like how far and how often you drive, environmetal conditons, and sunlight. In additon, the more aggressive the tire (ex. R-compounds), tend to age out a great deal faster given the softer rubber.

Marc
Old 04-14-2010, 11:28 PM
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ACSGP
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Originally Posted by hans57
The other thing is the Toyo's have a date code of '02. Is that too old?

Thanks!
I think you should watch this video:

http://abcnews.go.com/GMA/video/aged...hazard-4826897
Old 04-15-2010, 06:12 PM
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kos11-12
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great video thanks for the info
Old 04-15-2010, 07:35 PM
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CBR786
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damn it I have a set of new tyres on cup 1 wheels still with the stickers on have been sitting in my dry warm garage since 1999 ??? cannot even use them for a track day as that will be crazy lol ... now does that mean I have four more swings in my garden now?
Old 04-15-2010, 10:33 PM
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ACSGP
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I change my tyres every 3-4 years no matter what the tread wear is.
Old 04-18-2010, 05:12 AM
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rarebear
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6 years old is max !!!!! and for high performance cars I would say.. 4 years !!!
Old 04-18-2010, 09:15 AM
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hans57
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New Bridgestones coming this week. Got a Spring drive coming up this weekend and just do not feel comfortable after the rear blew two weeks ago.



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