See also:

Tread wear
The tread wear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions on a specified U.S. government course. For example, a tire graded 150 would ...

Tire size designation, load-bearing capacity and speed rating
1 Tire width 2 Nominal aspect ratio in % 3 Tire code 4 Rim diameter 5 Load bearing index 6 Speed rating Tire data is vehicle-specific and may deviate from the data in the example. ...

Modest Power
Throw in the upsized dimensions and standard all-wheel drive, and the E350 wagon is, well, portly. Its considerable 4,213-pound curb weight is greater than the V-8 E550 4Matic sedan's. The wagon's ...