book.book Page 5 Friday, July 19, 2013 12:53 PM Tire Care and Maintenance Improving Tire Mileage Asymmetric Tires To improve the mileage you get from your tires, ModelS tires are asymmetric and must be maintain tires at the recommended tire mounted on the wheel with the correct sidewall pressures (see page 7.3), observe speed limits facing outward. The sidewall of the tire is and advisory speeds, and avoid: marked with the word OUTSIDE. When new • Pulling away quickly, or hard acceleration. tires are installed, make sure that the tires are • Fast turns and heavy braking. correctly mounted on the wheels. • Potholes and objects in the road. • Hitting curbs when parking. • Contaminating tires with fluids that can cause damage. Replacing Tires and Wheels Tires degrade over time due to the effects of ultraviolet light, extreme temperatures, high loads, and environmental conditions. It is recommended that tires are replaced every six years, or sooner if required. Wheel rims and tires are matched to suit the handling characteristics of the vehicle. WARNING: Road holding is seriously Replacement tires must comply with the impaired if the tires are incorrectly original specification. If tires other than those installed on the wheels. specified are used, ensure that the load and speed ratings marked on the tire (see Winter Tires page8.10) equal or exceed those of the original specification. In snowy and icy conditions, consider installing Ideally, you should replace all four tires at the winter tires. Winter tires must be the same size, same time. If this is not possible, replace the brand, construction and tread pattern on all tires in pairs (both front or both rear). When four wheels. For recommendations on winter replacing tires, always re-balance and check tires, contact Tesla. the alignment of wheels. WARNING: On dry roads, winter tires For the specification of the original wheels and could have less traction than the tires installed on Model S, see page 8.8. originally installed tires. WARNING: For your safety, use only tires and wheels that match the original specification. Tires that do not match the original specification can affect the operation of the Tire Pressure Monitoring System (TPMS). MAINTENANCE 7.5