See also:

Types of tires
You should be familiar with type of tires present on your vehicle. ...

Wear indicators
1) New tread 2) Worn tread 3) Tread wear indicator Each tire incorporates a tread wear indicator, which becomes visible when the depth of the tread grooves decreases to 0.063 in (1.6 mm). A tir ...

Before starting out on a trip
- Check that the vehicle and vehicle-tohitch mounting are in good condition. If any problems are apparent, do not tow the trailer. - Check that the vehicle sits horizontally with the trailer ...