Determining Tire Pressure
I have read that you should not pay much attention to the inflation psi marked on the tires, but rather go by the vehicle recommendation printed on the door edge. In other information I have found ch...
Forum Discussion
The correct way is to go to a scale and weigh each tire position to see how much weight each tire is carrying. Then go to the tire manufactures web site and look for the inflation table, find your size tire, look at the weight you recorded, and the chart will tell how much air you need to carry that weight. I usually add 5 PSI for safety reasons. If you have different weights on the same axle, use the highest weight to determine the PSI you need.
A sample load and inflation chart
Load chart sample
A sample load and inflation chart
Load chart sample
