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Discussion Starter #1
Hello, I have a 1995 750iL with Pirelli Pzero 255/35/20 front and 285/35/20 rear. When I bought them from the original owner, he said to inflate all four tires to 40psi. I'm thinking that the rears should have a higher psi than the fronts? What do you guys think? I also have a sound system that adds about 80lbs to the car. The wheels are Hartage 14-spoke. Thanks.
 

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what does the tire state the pressure to be?
 

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The tires state a max PSI of 50...that's a bit high. It varies from car to car. The PSI I would need in my tires would be a lot higher in a 4600lb BMW than a 3600lb Murcielago (which also has these tires). The rear should also be higher than the fronts. So what do you guys think they should be?
 

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i would say between 40-44 psi.
 
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