I have been playing with tire pressures with the chalk test. The tyres do not seem to list a maximum tyre pressure, or not at least that i can find (retreads) (50/50 ATs). The garage that fitted them put 39 in them all round, so i did the chalk test and chalk was left on the shoulders a far way in.
I have reduced it some and then some more, to 35, 33, 31, 30 PSI. At all these pressures the chalk is slowly increasing disappearing. I am now down to just chalk left on the shoulder facing away from the car, exactly the same amount on the front and rear with 30 PSI. What pressure do other people run in 265/75 R16 tyres? I want the best life tread wear out of the tyres, i am not too bothered about petrol mileage or ride handling (as long as it doesn't but more strane on things like ball joints with too low pressure or too high).
With those goodyear wranglers it seemed that as you went lower, below the all round 31 PSI the wear increased a lot of the shoulders, and as increase it wore the middle out. So should i just run at 30 or 31 PSI all round or keep going lower until the lose the final chalk mark on the outside? When sitting cold overnight they look saggly a little bit, but i guess this happens at all pressures to do weightload, etc. sitting.
