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Old 06-02-2008, 06:55 AM   #1
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recomended tire pressure

I just bought a set of dunlop radial mud rovers, and I was wondering what the recommended tire pressure would be to run these on the street. I have a feeling that I am runnning the tires at to high of a pressure. They are 31x10.5 r 15.

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Old 06-02-2008, 08:20 AM   #2
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you should still go by the vehicle recomendation. probably 32. check owner manual if you want. the tire usually says max psi 44 or something, and people think thats what the tire is supposed to be at, not so. i keep mine around 35 on the road.

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Old 06-02-2008, 09:20 AM   #3
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That explains a lot. Ill have to let some air out of my tires. I always thought once someone changes the size of the tires the manufactoring specs no longer matter. Would you still want to run about 35 psi if you upgrade to 35s or 37s. Im just curious.
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Old 06-02-2008, 10:46 AM   #4
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i think so, i run 33's at 30 psi on the street just to have a little softer ride. unless you start running LT tires, which you have no need to, i'd stay in the 30-35 range on the street.
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Old 06-02-2008, 11:41 AM   #5
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i have those tires and the max air pressure is 40psi,

what i suggest is to find a mechanic that has a nitrogen tire fill station. i got my tires filled and for $35 they fill the tires to 95% or higher with nitrogen, you get free roadside assistance(anything dealing with the tires), free towing up to one mile, and free fills, so even if you choose to air down for some rock crawling you can fill with just regular air and bring your car to the mechanic and they will fill it with nitrogen for free(takes 15 minutes). nitrogen filled tires ware down much slower than a car with regular air, the nitrogen doesn't leak through the tire like regular air does, and a bunch of other stuff. so for $35 i think it is worth trying.
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Old 06-02-2008, 11:59 AM   #6
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i have those and they started to cup at 35 psi. i dropped mine down to 25 and they are wearing way better. you may not want to go that low, but i would at least go down to 28-30. just my .02
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Old 06-02-2008, 12:22 PM   #7
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Same tire here but in 33" and to get an even tread patch I am running at 28 psi, But thats with 8" wheels.
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Old 06-02-2008, 03:18 PM   #8
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i got the 31's it says 40 max, i keep my tires around 35
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Old 06-02-2008, 04:32 PM   #9
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Just do the chalk test to find the right pressure.
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Old 06-02-2008, 04:39 PM   #10
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i do 34 in front 30 in back

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