Tire Care and Maintenance Checking and Adjusting Tire Pressures Inspecting and Maintaining Tires Follow these steps when tires are cold and Regularly inspect the tread and side walls for Model X has been stationary for over three any sign of distortion (bulges), foreign objects, hours: cuts or wear. 1. Refer to the Tire and Loading Information Warning: Do not drive Model X if a tire is label located on the driver‡s center door damaged, excessively worn, or inflated to pillar for the target tire pressure. an incorrect pressure. Check tires 2. Remove the valve cap. regularly for wear, and ensure there are 3. Firmly press an accurate tire pressure no cuts, bulges or exposure of the ply/ gauge onto the valve to measure pressure. cord structure. 4. If required, add or remove air to reach the recommended pressure. Tire Wear Note: You can release air by pressing the Adequate tread depth is important for proper metal stem in the center of the valve. tire performance. Tires with a tread depth less 5. Re-check pressure using the accurate tire than 4/32” (3 mm) are more likely to gauge. hydroplane in wet conditions and should not 6. Repeat steps 3 and 4 as necessary until be used. Tires with a tread depth less than the tire pressure is correct. 5/32” (4 mm) do not perform well in snow and 7. Reinstall the valve cap to prevent dirt from slush and should not be used when driving in entering. Periodically check the valve for winter conditions. damage and leaks. Model X is originally fitted with tires that have wear indicators molded into the tread pattern. When the tread has been worn down to 4/32” (3 mm), the indicators start to appear at the surface of the tread pattern, producing the effect of a continuous band of rubber across the width of the tire. For optimal performance and safety, Tesla recommends replacing tires before the wear indicators are visible. Tire Rotation, Balance, and Wheel Alignment Model X tires cannot be rotated, as tires are asymmetrical and front tires are a different size from rear tires. Unbalanced wheels (sometimes noticeable as vibration through the steering wheel) affect vehicle handling and tire life. Even with regular use, wheels can get out of balance. Therefore, they should be balanced as required. If tire wear is uneven (on one side of the tire only) or becomes abnormally excessive, check the alignment of wheels. Note: When replacing only two tires, always install the new tires on the rear. 184 Model X Owner's Manual