Infiniti QX: Uniform tire quality grading
DOT (Department Of Transportation) Quality Grades: All passenger car tires must conform to federal safety requirements in addition to these grades. Quality grades can be found where applicable on the tire sidewall between tread shoulder and maximum section width. For example:
Treadwear 200 Traction AA Temperature A
Flat towing
Towing your vehicle with all four wheels on
the ground is sometimes called flat towing.
This method is sometimes used when
towing a vehicle behind a recreational
vehicle, such as a motor home. ...
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course. For
example, a tire graded 150 wou ...
See also:
Checking engine coolant level
Check the coolant level in the reservoir
when the engine is cold. If the coolant
level is below MIN 2 , open the reservoir
tank cap and add coolant up to the MAX1
level. If the reservoir tan ...
Wheels and tires
If you have a flat tire, see “Flat tire”. In case of emergency” section. ...






