2/32" on a standard passenger vehicle for most States in the USA, and that ain't much.
The minimum tyre tread depth in the UK is 1.6mm.
Minimum tread depth for all 4 tires is 2/32"
If you mean tire tread depth, the minimum is 1.6mm.
1.6 mm is the minimum
Minimum LEGAL tire tread depth is 2/32nds of an inch.
4/32nds of an inch
UK is 1mm
1mm according to UK law
in Manitoba we fail them at 3/32"
A typical automotive vehicle legal tread depth is 2/32", which isn't much.
In most of the USA, the legal minimum is 2/32 inch.
LGV's must have a tread depth of at least 1mm across 3/4 of the breadth of the tread and in a continuious band around the entire circumference