Patients with severe mitral regurgitation, a condition in which the heart's mitral valve does not close and seal properly, have a new, minimally invasive treatment option. The MitraClip system is a procedure that uses a small clip to repair the heart's mitral valve to treat mitral regurgitation.
Here in the U.S., tire tread is measured in 32nds of an inch. A brand-new tire has a tread depth around 10/32nds of an inch (approximately 1/3 of an inch). Some tires, like winter tires or off-road tires, may have a deeper tread. As you drive on the tires, the tread gradually wears down. If you reach the point where thereâs 2/32nds of an inch of tread or less left, the tires are bald and are considered legally worn out in most states.
1 The minimum amount of tread, which provides a secure grip, is around 3.5mm - about the depth of a match-head. 2  Less than 1.6mm is an offence by law. 3  In wet conditions, 3.0mm or less means that your traction and stopping power is greatly reduced.  When driving in snow, traction can be compromised at 4.75mm tread depth.