285/60/18 Nitto Air Pressure
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.
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.


