RV Tire Pressure Chart

Free RV tire pressure lookup - find correct PSI for ST, LT and passenger tires by load range. Inflation tables for trailer, motorhome and camper tires.

For educational purposes only. Always verify specifications with manufacturers and consult qualified RV technicians for safety-critical decisions. See our Terms of Service.

TIRE PRESSURE

Note: These are typical load/inflation values based on industry standards. Always verify against your specific tire manufacturer's published load chart for exact specifications.

Your Tire Info

Tire Type

Load Range

Found on tire sidewall after size (e.g., "ST225/75R15 E")

Actual Axle Weight (if known)

lbs

Per axle from a truck scale. Helps determine optimal PSI.

Wheel Configuration

Single (2 tires/axle) Dually (4 tires/axle)

Duallys divide axle weight by 4 tires instead of 2.

Pressure Recommendations

Max PSI (Cold)

-- psi

Max Load Per Tire

-- lbs

Recommended PSI

-- psi

Select your tire specs above

Load/Inflation Table

PSI	Load Capacity (lbs)

Tire Pressure Tips

Always Check Cold

Tire pressure should be checked when tires are cold (not driven for 3+ hours). Hot tires read 10-15% higher.

Don't Underinflate

Underinflated tires cause excessive heat buildup - the #1 cause of RV tire blowouts. When actual weights are unknown, inflating to max cold sidewall pressure is the safest approach for RV and trailer tires.

Weigh Your RV

Get individual axle weights at a truck stop CAT Scale (~$15). This lets you set optimal pressure rather than guessing.

Verify With Your Tire

Load/inflation tables vary by manufacturer and tire model. Use this calculator as a starting point, then check your tire manufacturer's published chart for exact specifications.