KRex-Tampa wrote:
Am I calculating this correctly, so that all tires should be set to between 80 lbs. and 84 lbs. ?
No. First, you didn't account to side to side weight variation - I'd estimate that at 10%.
I recommend that no tire be loaded to more than 85% of it rated capacity.
So I get 85 (rounded) for the front, and 90 psi in the rear.
So to check to see if this is correct, look in the owners manual to see what it says. Also, there might be a vehicle tire placard on the driver's door frame.
And as a further check, do a pressure build up test. When you are on a trip, measure the cold inflation pressure (before you start for the day), the after 45 minutes to an hour of sustained freeway driving, stop and check your pressures.
You want no more than a 10% build up. If you get more than that you need to add more air. If you get more than 15%, you need to do this immediately - and slow down until you do.
If everything looks good, do another check 45 minutes to an hour later. (note: It takes about an hour and a half to the tires to stablize.)
Please note: 10% build up is NOT a target. It is a maximum.
