A typical automotive vehicle legal tread depth is 2/32", which isn't much.
If you mean tire tread depth, the minimum is 1.6mm.
Tire spec in PA is 2/32 of an inch of minimum tread
Minimum LEGAL tire tread depth is 2/32nds of an inch.
Tire spec in PA is 2/32 of an inch of minimum tread
1.6 mm is the minimum
The minimum tyre tread depth in the UK is 1.6mm.
2/32"
2/32 inch
UK is 1mm
2/32"
In California, the minimum legal tire tread depth is 1/32 of an inch for passenger vehicles. However, it is recommended to replace tires when tread depth reaches 4/32 of an inch for better wet traction and safety. Regularly checking tire tread can help ensure optimal performance and reduce the risk of hydroplaning.
1mm according to UK law