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Can we determine the Ratings of out factory tires..........

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Old Apr 28, 2004 | 02:44 PM
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Mine calls for Z-Rated. Strange as that might sound...
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Old Apr 28, 2004 | 04:43 PM
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Originally Posted by ssesc93
Mine is rated Z. Why is it that my car only does 121?
Because your car originally came with tires that were not Z-rated. And the 121 limiter is in the PCM....
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Old Apr 28, 2004 | 06:55 PM
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His car could have come with z rated tires. Mine did.
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Old Apr 28, 2004 | 07:21 PM
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Originally Posted by jwikoff99
His car could have come with z rated tires. Mine did.
Brand new from the factory?
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Old Apr 28, 2004 | 07:22 PM
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yup
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Old Apr 28, 2004 | 07:47 PM
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Mine did too.
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Old Apr 28, 2004 | 09:17 PM
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Impressive! I know a lot of car manufacturers put speed limiters in there because they don't install Z-Rated tires on their cars from the factory, and they don't want a 'liability' because of that. I stand corrected!
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Old Apr 28, 2004 | 11:48 PM
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how can we find this out if we DONT have this sticker on our car? lol.... my car had been repainted awhile back and the stickers were removed but never put back on....
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Old Apr 28, 2004 | 11:48 PM
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well lets see know, I do need a tune up and some moe things done to the car and some tiires. If I do all of this, I might be able to do the Z-rated limit. That would be nice. Then after that I will never speed again......
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Old Apr 28, 2004 | 11:59 PM
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Why would my car come equipped with Z rated tires from the factory yet the ECM shuts down my car at 116? Doesn't seem to make much sense if you ask me.
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