It is important to understand your vehicle's original tire sizes and pressures, and theGVWR (Gross Vehicle Weight Rating) and GAWR (Gross Axle Weight Rating). This information can be found on two labels attached to Model S.

1. Tire and Loading Information Label
2. Safety Certification Label

The Tire and Loading Information label provides:

• The maximum number of occupant seating positions.
• The maximum vehicle capacity weight.
• The size of the original tires.
• The cold inflation pressures for the original front and rear tires. These pressures are recommended to optimize ride and handling characteristics.

Label Format:

Never change this label, even if you use different tires in the future.

The Safety Certification label is located on the driver's side door pillar:

A Model S equipped with a glass roof, or a panoramic sunroof, can carry up to 165 lbs (75 kg) using a Tesla-approved roof rack (see Parts and Accessories).A Model S equipped with a solid body color roof is incompatible with roof racks.

1. Locate the statement “The combined weight of occupants and cargo should never exceed XXX kg” on the “Tire and Loading Information” label.
2. Determine the combined weight of all occupants that will ride in the vehicle.
3. Subtract the combined weight of the occupants from XXX kg (see Step 1).
4. The resulting figure equals the available cargo load capacity. For example, if the “XXX” amount equals 635 kg and there will be five 65 kg passengers in the vehicle, the amount of available cargo capacity is 310 kg (635 - 325 (5 x 65) = 310 kg).
5. Determine the combined cargo weight being loaded on the vehicle. That weight must not exceed the available cargo load capacity calculated in Step 4.