Posted by Vaughn [99.104.66.136] on Sunday, June 09, 2013 at 22:46:04 :
In Reply to: Bias tire question posted by bucky [184.79.238.218] on Sunday, June 09, 2013 at 21:14:47 :
When bias tires sit, they form a memory from being cold that creates the “flat” spot experienced when first starting off. As the tire rolls, it heats and becomes flexible like most rubber does, and that eliminates the flat spot. As tires age, the rubber gets harder and it takes more heat over a longer distance to limber up. Tires also become ridge when sat for long periods without rolling.
Tires are designed to operate at a set air pressure. When over inflated, tires can fail when hitting rocks or pot holes. Tires need flexing capability and too much air prevents that. As a result cords can snap causing a break in the cord body and tire failure.
An under inflated tire generates too much heat. Over time the heat weakens the cords in the tire, and it will blow out.
For bias tires, you’re beyond the safe limit for age (6 years) from the DOT date.