Inspect the wheel for worn wheel stud holes. Worn stud holes will appear as a shiny worn surface on the wheel face. If the stud holes are oval and if metal is built up around the holes, replace the wheels.

Inspect the wheel for cracks radiating from the following areas:

Cracks are a result of overloading. Replace damaged wheels and inspect the wheel studs. If you discover that one or more studs is bad, replace all of the wheel studs. The hub assembly may have a worn mounting face. Inspect the wheel ball seats for wear. Replace all damaged parts. The two illustrations that follow show worn stud holes and cracked discs.

Carefully inspect the rims before mounting the tires. Replace all cracked rims, which are dangerous to use.

The following is a list of common leak areas:

Inspect the wheel for damaged bead seats. Excessive corrosion and improper bead seating can cause erosion and chipping of the bead seat.

Inspect for a loose mounting condition. Loose mountings can cause damage to the following components:

If a stud nut is damaged, replace all studs and wheel nuts. If the wheel stud holes are damaged, replace the wheel.

Important: Corroded rims cause poor lock-ring or lock-ring seating. Replace all corroded rims.

Inspect rings for a bent or sprung condition. Rough and improper removal and installation procedures will cause bent or sprung rings. Rings which are bent or sprung cannot be seated properly in the rim gutter. Replace springs which are damaged, sprung, or bent.

Inspect lock-rings for cracks or erosion. Lock-ring cracks spread laterally through the entire ring. Improper removal and installation procedures will cause cracking. Overloading, excessive clamping torque, and impact with road obstructions can also cause cracked lock-rings.

Inspect for damaged bead seats. Excessive corrosion and improper bead seating can cause erosion and chipping of the bead seat. Replace damaged, corroded, or bent lock-rings. Always use the proper type and size of lock-ring.

Wheel Studs

CAUTION:: If one stud is damaged, replace all the studs. A loose-running wheel may cause only one stud to break, but the other studs could have internal fatigue. Replacing only the broken stud and remounting the wheel may cause further damage and personal injury. If the stud holes in the wheels have become enlarged or distorted, replace the wheel.

Notice: Insufficient wheel stud nut torque can cause the rim to slip, resulting in broken valve stems, worn parts, wheel shimmy, and extreme tread wear. Excessive mounting torque can cause stripped or broken studs, collapsed spacer bands, out of round rims, or cracks in the stud hole area.

Stripped threads on the studs can be caused by the following conditions:

If any studs show damaged threads, replace all studs.

Broken studs may be caused by the following conditions:

Wheel Nuts

Notice: Insufficient wheel stud nut torque can cause the rim to slip, resulting in broken valve stems, worn parts, wheel shimmy, and extreme tread wear. Excessive mounting torque can cause stripped or broken studs, collapsed spacer bands, out of round rims, or cracks in the stud hole area.

A loose mounting condition causes damaged wheel nuts. Replace all of the wheel nuts and wheel studs if any are damaged.