1/8 th inch, a little more if you encounter wet roads to help prevent hydroplaining..
It is the depth of the grooves in the tyre.
If you mean tire tread depth, the minimum is 1.6mm.
That depth present on a new tyre.
Minimum LEGAL tire tread depth is 2/32nds of an inch.
The minimum tyre tread depth in the UK is 1.6mm.
The average tread depth of a new radial tire is typically around 10/32 to 11/32 of an inch. This tread depth provides good traction and performance while allowing for gradual wear over the lifespan of the tire.
All tires on vehicles driven in Missouri must be safe. There is no listed minimum tiretread depth or mention of tire grooving in the laws.
UK is 1mm
It is the rubber marker within the tread to show tread depth. It is also known as a tread wear indicator
IC 9-19-18 - Indiana does not have a legal tire depth law... Most states list 2/32 as the limit.
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
1.6 mm is the minimum