Tire Inflation Guide

blt2ski wrote:
Jim,

I do this for the trucks, trailers I run at max sidewall pressures. My trucks, especially the rears. The 70 or 75 series tires we seem to be getting on newer rigs today is more susceptible to the middle wearing out if you run max psi and then run the rig empty for long periods say commuting. A pizza cutter tire, ie an 85 series this does not seem to be an issue. I was able to run 70 psi in a 235-85-16 empty on a pickup and get full tire width contact, where as a 245-75-16 was in the 55-60 range. Both tires have the same total wt at psi etc per a tire chart.

My old dually, I only need 50-55 when empty, then again, it only had 3-3200 lbs on it. Single tired rigs seem to have 2100-2400 ont he RA, so again, no need to have full psi. Rides really rough too.

The visual with water, dust etc seems to give me a pretty good clue if I have too much psi in the tires. I have never weighed ea tire. I do go thru the DOT scales to see how I am doing on axel wts at times. but otherwise, no need to weigh, as ea trip will be slightly different per say.

marty

Marty
I'll go with you on that Marty and it sounds like you got your system, "down pat".. and as you stated, weights can change....I've weighed my 5er when loaded light and when loaded heavy...still run 110 psi in the G rated tires, as recommended by both HR (though now out of business with 5er's), and with Goodyear....truck tires are a different subject..


thanks for the explanation,
Jim