As stated, a tire's age can dictate when it needs replacing. Tire Rack recommends changing your car's tires every six to 10 years, no matter what the tire tread depth is. If a tire is over 10 years ...
The problem that airless tires solve is flats. We did have a technology called run-flat tires, but they were expensive, they couldn’t be patched if you got a leak, and if you had an all-wheel drive ...