What is the permissible difference in tread depth?

Almost all car owners know that on one axis, tires with the same parameters can be installed. It is not allowed to install tires with different speed and load indexes, even if it is the same model. This is related to the car's directional stability. Tires with different parameters have different characteristics and can lead to an unexpected turn of the vehicle. But does this apply to tread depth? After all, this parameter is key when aquaplaning and braking on a wet surface.

Yes, undoubtedly, the tread depth affects the characteristics when maneuvering on a flooded surface. At the same time, leading tire manufacturers recommend maintaining an identical tread depth on the tires of one axis, allowing a maximum difference of 1.5 mm.

This is important to consider when installing a spare wheel, when replacing a damaged tire, or during seasonal tire rotation during installation.