RV Wheel Nut Torque

On a new unit, or every time a wheel is removed for any reason, the torque on the wheel nuts must be re-checked following this schedule:

• After 10 milesof travel
• After 50 milesof travel
• After 100 milesof travel

The torque may be set correctly at the factory, or at the dealership, but after a few miles of travel, things "settle in" and wheel nuts may come loose. This is especially true for aluminum wheels, which are highly susceptible to loosening due to thermal expansion and contraction compared to steel wheels. I know this from experience! Check that wheel nut torque - the 5 minutes it takes to check may prevent a serious wheel-off incident.

Typical Torque Specifications

While wheel nuts on a travel trailer are normally torqued to 90 foot-pounds, specifications differ depending on the axle brand and stud size. General guidelines include:

• 1/2" studs:90 - 120 ft/lbs
• 9/16" studs:120 - 140 ft/lbs

The wheel nut torque on a large Class A motorhome may go up to 245 ft/lbs. Always check your owner's manual for your specific rig!

Proper Torquing Technique

When tightening lug nuts, always use a crisscross or star patternto ensure even seating across the hub. Never use an impact wrench for the final tightening—always finish with a calibrated manual torque wrench to ensure the exact ft/lbs.