See also:

Tread
The part of the tire that comes into contact with the road. ...

Normal occupant weight
The number of occupants the vehicle is designed to seat, multiplied by 68 kilograms (150 lbs). ...

Maximum tire pressure
WARNING Never exceed the maximum tire inflation pressure. Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, advers ...