2010 Volvo V50 Owner's Manual - Page 178

07 Wheels and tires General information tread wear as even as possible and will help you get maximum mileage from your tires. Ideally, tire rotation should be done the first time after approximately 3,000 miles (5, 000 km) and thereafter at 6,000 mile (10,000 km) intervals. Tire rotation should only be performed if front/ rear tire wear is fairly even and tread height is above 1/16" (1.6 mm). Tread wear indicator NOTE Tire rotation is not included in regularly scheduled maintenance and is performed only at customer request, at additional charge. G020323 Your Volvo retailer can also provide guidance based on your particular driving circumstances. The tires have wear indicator strips running across or parallel to the tread. The letters TWI are printed on the side of the tire. When approximately 1/16" (1.6 mm) is left on the tread, these strips become visible and indicate that the tire should be replaced. Tires with less than 1/16" (1.6 mm) tread offer very poor traction. When replacing worn tires, it is recommended that the tire be identical in type (radial) and size as the one being replaced. Using a tire of the same make (manufacturer) will prevent alteration of the driving characteristics of the vehicle. 07 178