Check your Tires!
Listen for audible leaks
Make sure the tire is not in contact with any other part of the vehicle
The tire pressure must be at 100 PSI (105 for super singles). Anything below 80 PSI is considered flat.
Do not kick the tires or use a tire “thumper”. Only by measuring the air pressure with a tire gauge can you be certain.
Steer tires are required to have a minimum tread depth of 4/32 inches. All other tires are required to have a minimum tread depth of 2/32 inches.
A tire is considered defective if any two major grooves are under the legal tread depth and adjacent to each other.
There should not be any belt material or casing ply showing in the treads.
Make sure the side wall is not cut, work or damaged to expose the steel or fabric ply.
It cannot have observable bumps, bulges or knots. This indicates the inner ply is ruptured and the tire is at risk of rupturing at any time.
A tire can have a bulge of less than 3/8 inch if it is a properly marked repair and not on the steer tires.
Make sure the tire does not have a recap decaying or separating from the tire. Steer tires can not be recapped.
Check the valve stems for covers and any damage.