Tire maintenance - Load indexes
If you replace a light truck tire with a passenger car tire, the replacement tire must always have a 10% greater "maximum load" rating.
If you replace an original equipment C / light truck tire with a passenger car tire, you cannot install a passenger car tire which has the same "Maximum Load" rating as the C/light truck tire (which is shown on the sidewall of the C/light truck tire identified on the vehicle manufacturer's tire placard). The replacement passenger tire must have a "Maximum Load" rating of at least 10% greater than the original equipment C/light truck tire specified on the vehicle placard.
DO NOT OVERLOAD - DRIVING ON ANY OVERLOADED TIRE IS DANGEROUS
The maximum load rating of your tires is molded on the tire sidewall. Do not exceed this rating. Follow the loading instructions of the manufacturer of your vehicle and this will ensure that your tires are not overloaded. Tires that are loaded beyond their maximum allowable loads for the particular application will build up excessive heat that may result in sudden tire destruction.
Do not exceed the gross axle weight rating for any axle on your vehicle.