Wheel and Rim Problems Damaged rims. Rust around wheel nuts may mean the nuts are loose--check tightness. After a tire has been changed, stop a short while later and recheck tightness of nuts. Missing clamps, spacers, studs, or lugs means danger. Mismatched, bent, or cracked lock rings are dangerous. Wheels or rims that have had welding repairs are not safe. Bad Brake Drums or Shoes Cracked drums. Shoes or pads with oil, grease, or brake fluid on them. Shoes worn dangerously thin, missing, or broken. Steering System Defects Missing nuts, bolts, cotter keys, or other parts. Bent, loose, or broken parts, such as steering column, steering gearbox, or tie rods. If power steering equipped, check hoses, pumps, and fluid level check for leaks. Steering wheel play of more than 10 degrees approximately 2 inches movement at the rim of a inch steering wheel) can make it hard to steer.