What air pressure for tires?

HermitJohn · #21 11/30/10, 10:57 AM

Quote:

Originally Posted by Beeman

Most tire shops are the most ignorant about tire pressures and wheel torque. They surely are not going to take the time to walk to the car and check the pressure tag, not vey manly. Most are part of the don't read the manual club. I don't let tire shops do anything more then put the tire on the rim and balance it, they usually struggle with the balancing part. I remove and install my own and bring them to them and set the air pressure when I put them on. I just worked on a Jeep thet had new tires put on recently. I replaced 7 lug nuts and had to chase the threads on those studs.

And never take anything with left hand thread lug nuts to a shop unless its a mature person doing the work that realizes left hand threads exist. Otherwise its a battle with the shop to make them assume responsibility and replace the lug bolts and nuts on their dime after their hired help strips them. Course even with normal threads, they want to torque those babies down far more than manufacturer recommends. And they dont use antiseize so after couple years when you have a flat on a dark cold rainy night and are trying to remove those nuts with the minimalist lug wrench the car maker provided.....

solaryellow · #22 11/30/10, 12:04 PM

When I get new tires I usually use a piece of sidewalk chalk and draw a thick line across each tire and then drive it in a straight line for about 50 yards or so. If the chalk line is gone, all of the tire is making contact with the road. If the outside part of the tread still has chalk, the tire is overinflated. If there is chalk in the middle but not the outsides, the tire is underinflated.

clong · #23 12/01/10, 02:39 AM

Exactly as solaryellow said. This is what I do every time I buy new tires. I usually get between 60,000 and 100,000 miles on a set of tires.

Wis Bang 2 · #24 12/02/10, 05:06 PM

Quote:

Originally Posted by solaryellow

When I get new tires I usually use a piece of sidewalk chalk and draw a thick line across each tire and then drive it in a straight line for about 50 yards or so. If the chalk line is gone, all of the tire is making contact with the road. If the outside part of the tread still has chalk, the tire is overinflated. If there is chalk in the middle but not the outsides, the tire is underinflated.

This is recommended, especially when using oversize tires on a 4x4...I use a fat stick of chalk they sell for turkey calls.

Txrider · #25 12/03/10, 09:45 AM

Quote:

Originally Posted by solaryellow

When I get new tires I usually use a piece of sidewalk chalk and draw a thick line across each tire and then drive it in a straight line for about 50 yards or so. If the chalk line is gone, all of the tire is making contact with the road. If the outside part of the tread still has chalk, the tire is overinflated. If there is chalk in the middle but not the outsides, the tire is underinflated.

Yup, the sticker inside the car door really only applies if using the recommended tires for the car as far as size and type..

If you step outside the normal size or tire type your on your own to figure out what pressure gives a good contact patch with the tire your using and the load your putting on it.