: Differing tread depths on the same axle can cause the vehicle to veer to one side during emergency stops.
of an inch) can cause the tires to spin at different speeds, which puts immense stress on the drivetrain and can lead to expensive differential failure. 3. When It’s Safe to Replace Just One do you have to buy tires in pairs
: Most AWD manufacturers, like Subaru and Audi, require replacing all four tires at once. Even a small difference in tread depth (often as little as : Differing tread depths on the same axle
: You can typically replace tires in axle pairs. If you only buy two, experts at Bridgestone and Michelin advise putting the new tires on the rear axle , regardless of whether the car is FWD or RWD. This provides better stability and prevents dangerous oversteer in wet conditions. When It’s Safe to Replace Just One :
: Mismatched tires can lead to "darting" or unstable steering because one side of the car has significantly more traction than the other.
: Modern safety systems like Anti-lock Braking (ABS) and Electronic Stability Control (ESC) rely on consistent wheel speed data. Large differences in tire diameter can confuse these sensors. 2. Drivetrain Matters: 2WD vs. AWD