TIRE CENTER · Understanding & choosing tires
Passenger vs. LT tires
Passenger and LT are application categories
Read the application designation
Match the vehicle, wheel and use
Fitment means the complete suitability of tire, wheel and vehicle/use—not merely physical mounting. Payload is the people/cargo the vehicle is allowed to carry. Some pickups and SUVs correctly use passenger tires; LT is not automatically an upgrade.
Verify exact load/inflation requirements and wheel limits, including towing and payload. SL/XL may appear on passenger tires; Load Range may appear on LT tires.
Similar dimensions leave unanswered questions
- An existing passenger tire and proposed LT tire may share width/aspect/wheel-size numbers.
- The LT category means copying the old PSI or judging appearance cannot establish suitability.
- Have the exact tires, vehicle/wheels and actual use checked.
No universal pressure conversion or comfort promise applies; some vehicles should retain the specified passenger tire type.
Sources and Technical Notes
Technical concepts reviewed 2026-10-10. Actual application instructions remain controlling.
- USTMA Care and Service of Passenger and Light Truck Tires (2017 edition, currently hosted) (opens in a new tab)
- USTMA: replacing tires (opens in a new tab)
- Yokohama: sizing, application, single/dual and inflation information (opens in a new tab)
Application-specific details and scope
USTMA explains that changing passenger to LT tires can require significant inflation changes for equivalent load support. Its passenger-tire capacity adjustment for light-truck applications uses division by 1.10; this is installer guidance, not a customer pressure-conversion formula.