The weather here in MD is wonky, to say the least. A week ago, we were 6 degrees above. Today, nearly 60. Tire pressures are fluctuating as much as the temperature (I'm an avid sport motorcyclist, so I tend to be extremely in-tune with my tires). My question is this - what have people found to be the best tire pressure for the 20's with stock tires?
On my Ram 2500 (10 ply 17" tires), I run 80psi (cold). Even treadwear, excellent tread life, outstanding fuel economy (for a big honkin' fullsize diesel pickup).
My YJ Wrangler (31x10.50-15) and XJ Cherokee (265-75/15...I think) are happiest at 32-35 - any more and they wear down the center, any less and the tread gets serrated and the handling gets even worse lol.
I just aired up the WK2's set to 40. They were all at 35(ish) - my first physical check (outside of the EVIC), had it 2 weeks, has about 2500 miles on it now.
I'm hoping for the best fuel economy I can get, without wonky tread wear. Does anyone have any ideas or experience? The tire sidewall says max PSI of 51...is anyone running them at 50? Any treadwear issues? I got the diesel because I wanted the best MPG I can get - 5psi drop on my Ram loses me about 2mpg, so if adding another 10psi to the WK2 can net me some MPG without hurting treadwear patterns....well hell, air's free!