I think you are looking for "tread." Only the end of "Instead" rhymes with it, but it is what the grooves on a tire are called.
No the grooves are the tread, the profile is the height of the tire from the rim measured in percentage of tire width.
tread, i think Sipe
Tire grooves channel and disperse the water on wet roads. If it weren't for grooves, your tires would be 'aquaplaning' on every patch of water, and not gripping the surface.
sipe
It is the depth of the grooves in the tyre.
Vertical grooves are called "striations."
To disperse water and avoid hydroplaning.
When tires are made, the tread pattern has grooves in them. There are parts of the grooves that are not as deep as others. When the tire has worn down to that level, the tread has worn away to the point where they are no longer safe to drive on. The bars are clearly visible going across the tire.
Mostly, they are to channel water away from the underside of the tire. They also improve the tire's grip in turning, and in moderately snowy conditions. The largest selling type of tires are what are called "all season radials" - good for any kind of weather.
This is called the tread. It must be durable and heat resistant, and its grooves help keep it in contact with the road, especially when it is raining.
The tread of a tire or track refers to the rubber on its circumference that makes contact with the road. As tires are used , the tread is worn off , limiting its effectiveness in providing traction. A worn tire tread can often be retreaded. The word tread is often used incorrectly to refer to the pattern of grooves cut into the rubber . Those grooves are correctly called the tread pattern, or simply the pattern .