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Recomended Tire Pressure for 18 inch Tires?

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Old Oct 27, 2004, 06:47 PM
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Recomended Tire Pressure for 18 inch Tires?
I have Kumo 18-235-40 tires. I have NO IDEA what the reccomended tire pressure should be, I would immagien higher then stock, any ideas?


Thanks for any and all info.
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Old Oct 27, 2004, 07:58 PM
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Comon Guys, don't be shy now...
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Old Oct 27, 2004, 08:01 PM
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40-45 psi I bet the tire itself says 51 psi MAX so that should be a good ball park
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Old Oct 27, 2004, 08:04 PM
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Cleanevo, incorrect.

Give me a few minutes, I'll have an exact answer for you.
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Old Oct 27, 2004, 08:07 PM
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i think mine are 28-26 different in the front than the rear....then again I'm a little tipsy so....
Last edited by psshhh[EVO8]; Oct 27, 2004 at 08:11 PM.
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Old Oct 27, 2004, 08:11 PM
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your exact pressures to comply with the factory pressure requirement should be 38 PSI fron, 35 PSI rear. Best of luck.
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Old Oct 27, 2004, 08:15 PM
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word..



Originally Posted by feldguy
your exact pressures to comply with the factory pressure requirement should be 38 PSI fron, 35 PSI rear. Best of luck.
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Old Oct 27, 2004, 09:24 PM
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thats if you want it stock PSI but who wants stock
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Old Oct 28, 2004, 05:47 AM
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Front 30 rear 35......... That is what I do to my Evo.
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Old Oct 28, 2004, 06:18 AM
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Right....then again, what do I know? I've only done this for a career. Trust me, the stock pressures are adequate and appropriate on the street.
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Old Oct 28, 2004, 07:21 AM
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Yup stock pressures are best. Even though the tire seems larger, it still holds the same amount of air as the stock 17" tire. The 18" is a bit wider, but also a bit shorter in profile. So the amount of air in the tire doesn't change, just the shape of the air in the tire. Run stock pressures, don't exceed the max psi on the tires sidewall. And yes, I do this as a career as well
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Old Oct 28, 2004, 11:20 AM
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38 Front PSI
35 REAR PSI,


Got it, this is for 235-40-18 Right?
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Old Oct 28, 2004, 03:11 PM
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Depending on the load rating of a replacement tire and how it compares to the stock tire, you should adjust the pressure to meet the same load.
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