Nitto NT421Q tires come in 36 tire sizes with maximum tire load capacity of 1874 pounds to 2833 pounds and maximum tire inflation of 50 psi to 51 psi.
Nitto NT421Q tire load capacity and tire inflation settings may vary based on tire load index / load range. Check Nitto NT421Q tire sidewall for more information. Tire inflation and load capacity values printed on the sidewall represent the maximum air pressure Nitto NT421Q tire can be inflated to support its maximum load capacity, and not necessarily the recommended tire pressure for your vehicle. Never overload or overinflate Nitto NT421Q tires beyond the maximum inflation and load capacity values indicated on the tire sidewall.