Join Date: Dec 2017
Location: So Cal Desert
Thanked 25 Times in 25 Posts
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If you arenít getting any warning lights from the TPMS system, this is easy:
Have the PSI set on the high side, say 70. Load your truck with a normal, everyday load.
Find a big, flat open space, like a empty parking lot.
Park your truck.
Using the chalk, draw a single line across the tread.
Drive your truck in a straight line for 20-30 yards.
Get out and check the chalk marks. If it is worn off in the middle, lower the pressure a bit and do it again.
Ideally, you want that chalk line to wear evenly across the tread.
I have 35x12.5x20ís and run 55 front, 50 rear most of the time. Lots of highway driving.
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2015 2500, crew cab, auto, sb, stock Cummins, ARE Canopy, Cargo Glide, Vision X front and rear, Carli Backcountry System, XD 20" Wheels, Toyo ATII's 35/12.5/20, Duraflaps