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 light truck tire with a passenger car tire, you cannot install a passenger car tire which has the same "Maximum Load" rating as the light truck tire (which is shown on the sidewall of the light truck tire identified on the vehicle manufacturer's tire placard). The replacement passenger tire must have a "Maximum Load" rating at least a 10% greater than the original equipment light truck tire specified on the vehicle placard.