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Tire Pressure Shelby Razors

#1 User is offline   2boxers 

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Posted 06 April 2008 - 06:48 AM

Im getting ready for the road trip next sunday and am wondering what is the correct tire pressure for the shelby razors? I have BFG's 255/35/20front and 275/35/20 rear. I went with the car plate and have 35psi is this correct?

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#2 User is offline   shelby001 

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Posted 06 April 2008 - 06:52 AM

View Post2boxers, on Apr 6 2008, 10:48 AM, said:

Im getting ready for the road trip next sunday and am wondering what is the correct tire pressure for the shelby razors? I have BFG's 255/35/20front and 275/35/20 rear. I went with the car plate and have 35psi is this correct?


Check on the side wall of the tire it will give you the proper pressure for that tire.
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#3 User is offline   2boxers 

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Posted 06 April 2008 - 07:13 AM

The tire just says max. pressure 44psi, max load 1653lbs. It also said refer to the vehicles owners manual for proper tire pressure.
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#4 User is offline   sbornitz 

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Posted 07 April 2008 - 02:59 PM

View Post2boxers, on Apr 6 2008, 10:13 AM, said:

The tire just says max. pressure 44psi, max load 1653lbs. It also said refer to the vehicles owners manual for proper tire pressure.


Just from my experience if you run the tires at less than 40psi you will wear out the outer/inner portions of your tires rather quickly up front. In the back I am assuming a similar situation but a lower pressure should help with get grip on take off. I run all 4 of my stock tires at 40-44psi.
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#5 User is offline   GT500FLYBOY 

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Posted 07 April 2008 - 03:03 PM

View Postshelby001, on Apr 6 2008, 09:52 AM, said:

Check on the side wall of the tire it will give you the proper pressure for that tire.


The number on the side of a tire is generally the MAX PSI and has no bearing on what the recommended pressure should be for a given car. I have the same question about the Pirelli's that come with the 40th. The MAX PSI is 50, but you'd never use that in this car. Question is - where do we find the correct number?
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#6 User is offline   GT500FLYBOY 

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Posted 07 April 2008 - 03:06 PM

View Postsbornitz, on Apr 7 2008, 05:59 PM, said:

Just from my experience if you run the tires at less than 40psi you will wear out the outer/inner portions of your tires rather quickly up front. In the back I am assuming a similar situation but a lower pressure should help with get grip on take off. I run all 4 of my stock tires at 40-44psi.


Stock GT500? You should be at 32 PSI with the Eagle F1 Supercar tires. ANy more than that and you wear out the center on the tread quickly. I know - I ran 35 PSI in mine last year on my first set.
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