See also:

Changing the set speed
After a speed has been set, it can be increased or decreased by using the or buttons. Each time one of these buttons is pressed, the vehicle's speed changes by 5 mph (approximately 8 km/h). ...

Uniform Tire Quality Grading
Quality grading information ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO THESE GRADES Quality grades can be found, where applicable, on the tire sid ...

Driving on rough/unpaved surfaces
The Volvo XC90 is designed primarily for onroad driving, and it has excellent handling characteristics on very rough or unpaved roads. When driving on poorly maintained or unpaved roads, please ...