Trailer Wheel Torque
It is extremely important to apply and maintain proper wheel mounting torque on your trailer. Torque is a
measure of the amount of tightening force applied to a fastener. The correct use of a properly calibrated
torque wrench is the best method to assure the proper amount of torque is being applied.
CAUTION
Wheel nut or bolts must be applied and maintained at the proper torque levels to prevent loose wheels,
broken studs, and possible dangerous separation of wheels from your axle. Any of these failures may
result in property damage, injury or death.
If fasteners require replacement, be sure to use only fasteners matched to the cone angle of your
wheel. The proper procedure for attaching the wheels is as follows:
1. Start all bolts or nuts by hand to prevent cross threading.
2. Tighten bolts or nuts in the sequence pictured below for the bolt pattern that matches your
wheel.
3. Tightening of the fasteners should be done in stages. Following the recommended sequence,
tighten fasteners to torque per wheel torque chart provided.
15” 20 – 25ft/lb 50 – 60ft/lb
90 – 120ft/lb
16” 20 – 25ft/lb 50 – 60ft/lb
90 – 120ft/lb
4. Wheel nuts/bolts should be tightened to the specified torque before first road use and after each
wheel removal. Check and re torque after the first 10 miles, 25 miles, and again at 50 miles.
Check daily before use thereafter.
Trailer Wheel Repair or Replacement
CAUTION
Do not attempt to repair or modify a wheel. Even minor modifications can have a great effect on safety
and performance. Do not install a tube to correct a leak through the rim. If the rim is cracked, the air
pressure in the tube may cause the pieces of the rim to explode with great force and can cause serious
injury or death.
Marathon Equipment Inc. stocks rims and tires designed specifically for your equipment to meet your
replacement needs. Please contact your distributor or Marathon directly for more information.
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