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But for us, the legal requirement is the thing; everything else, as so much in this life, is a compromise. Cannot be applied to previous purchases. Tests of airliner aircraft tires have shown that they are able to sustain pressures of maximum 800 pounds per square inch 55 bar; 5,500 kPa before bursting. Mechanics of Pneumatic Tires.
Radial Main article: Radial tire construction utilizes body ply cords extending from the beads and across the tread so that the cords are laid at approximately right angles to the centerline of the tread, and parallel to each other, as well as stabilizer belts directly beneath the tread. Archived from on May 25, 2009. Many commercial trucking companies put retreads only on trailers, using only new tires on their steering and drive wheels.
How old are my trailer tires? - Also, certain combinations of cross ply and radial tires on different wheels of the same vehicle can lead to vehicle instability, and may also be illegal.