Due to the engineering of the Subaru all wheel drive system, tire diameters must retain a specific tolerance to prevent transmission and/or differential damage.
The problem begins with one flat tire. By only replacing the one flat tire you have increased that tire's diameter and it will now rotate slower than the older tires. The transmission and/or differential will compensate constantly to make the new tire spin at the same speed as the other three.
This over-compensation will cause extensive damage to the vehicle's drivetrain. The resulting damage done to the drivetrain will not be covered under factory warranty.
Replace all four tires in the event of one flat. That's right, having one flat will cause you to have to buy a complete set of tires.
Q: How long does the coverage last?
A: The coverage lasts for as long as you own your vehicle. It is non-transferable and cannot be canceled.
Q: Does the coverage only replace the tires once?
A: No, the coverage will replace all four tires as many times as needed while you own your vehicle.
Q: What happens when my tires are worn out.
A: The replacement of worn tires, unless you are covered by our TIRES FOR LIFE program, would then be your responsibility. However, your new tires will also be covered by our road hazard program.