If you mean tire tread depth, the minimum is 1.6mm.
Tire spec in PA is 2/32 of an inch of minimum tread
2/32 of an inch
4/32 nds of an inch
Tire spec in PA is 2/32 of an inch of minimum tread
If you take a Lincoln penny and run it upside down, so that the top of Abraham Lincoln's head is toward the center of the tire in the gap of the tread, the tread should be past the top of honest Abe's head. The minimum legal tread depth under Kansas law is 1/16" KS 8-1742.
In Indiana, the legal minimum tire tread depth is 2/32 of an inch. It is recommended to regularly check tire tread depth to ensure safety and compliance with the law.
In Virginia you must have 2/32 tread depth on all 4 tires to pass inspection.
The minimum tyre tread depth in the UK is 1.6mm.
Minimum LEGAL tire tread depth is 2/32nds of an inch.
It depends on the legislation of the country in question
2/32"