Can You Mix Tire Brands, Sizes, and Tread Depths?
Mixing tires is a frequent question when only one or two tires need replacing. This overview summarizes common industry guidance on what to avoid.
When one or two tires wear out or get damaged, many drivers ask whether they can mix different tires. The safest answer is that a full matched set is ideal, but the practical guidance depends on what is being mixed. The points below reflect common guidance from tire manufacturers and industry associations.
Mixing Tire Sizes
The size molded on the sidewall is chosen by the vehicle manufacturer for clearance, load, and speedometer accuracy. Fitting a size that differs from the specification can affect handling and instrument readings. As a general rule, all four tires should match the size listed on the door jamb sticker unless a qualified professional confirms an approved alternative.
Mixing Tread Types and Seasons
- Combining winter and non winter tires on the same vehicle is generally discouraged, because the four tires would respond differently in the cold.
- Mixing summer and all season tires can create uneven grip between axles.
- Where any mixing is unavoidable for a short period, matching the two tires on the same axle is the common recommendation.
Mixing Brands and Tread Depth
Different brands and models use different compounds and tread designs, so grip can vary even at the same size. Differences in tread depth also change rolling diameter, which matters most on all wheel drive vehicles. When replacing only two tires, the newer pair is commonly installed on the rear axle to support stability.
The Simple Guideline
For the most predictable handling and braking, a matched set of four is best. When that is not possible, keep each axle matched and confirm your plan with a qualified tire professional who can review your specific vehicle and tires.