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285/60/18 Nitto Air Pressure

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Old Jan 24, 2006 | 01:31 PM
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kapoho's Avatar
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From: Colorado
285/60/18 Nitto Air Pressure

For anyone that is running these tires on stock wheels, what do you have your air pressure set at so they wear evenly?
 
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Old Jan 24, 2006 | 04:28 PM
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I ran into a similar problem with my 325s, no one knew the proper air pressure. So I did the chalk test, get the tires to operting temp and make a big line across with chalk. Then drive the truck a couple 100 feet in a straight line and see where the chalk is worn off. If its gone in the middle there overinflated if its gone on the sides underinflated. BTW mine was perfect at 45 PSI.
 
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Old Jan 24, 2006 | 04:41 PM
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Thanks! I'll give that a shot this afternoon.
 
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Old Jan 24, 2006 | 07:20 PM
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Discount Tire told me to do about 35. And, yes, I'm actually running the Nitto Terra Grappler 285/60R18's.
 
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Old Jan 24, 2006 | 07:42 PM
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I got Toyo Open Country same size, 40 psi and 12000 miles rotating every 5000 = no problems....
 
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Old Jan 24, 2006 | 08:04 PM
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From: Plano, TEXAS
Originally Posted by HCFR-Halligan
I ran into a similar problem with my 325s, no one knew the proper air pressure. So I did the chalk test, get the tires to operting temp and make a big line across with chalk. Then drive the truck a couple 100 feet in a straight line and see where the chalk is worn off. If its gone in the middle there overinflated if its gone on the sides underinflated. BTW mine was perfect at 45 PSI.
Dang, discount tire really knows their stuff. I had my 325/65/18 ntg's at 35, and I brought it in for them to check the air pressure out, and they said that 45 psi would be the optimal pressure, and I thought to myself that seemed really high. I guess 45 it is.
 
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