I find the rule works in theory, but can be difficult to put into practice sometimes. Tyres facing the morning sun can rise 3-4 psi in a very short time. I generally run 30/36 f/r.... but I drive a mix of dirt and tar roads daily. Will lower if doin continual dirt or raise for tar only, and raise again for load if needed. I found too higher pressures on dirt caused rocks to drill through the cases and caused less traction. I use 4 psi, gets me close.
'93 D1 V8 auto
'93 D1 200Tdi 2-door, ARB's, MD transfer, sill tanks, winch, 2"lift.......
'95 D1 V8 auto......gone
'86 V8 RRC.....gone
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