Th most common cause is a bent wheel. It can also be caused by a loose lug nuts, a loose or worn out bearing, or a tire that is out of round. As this is RWD, it can also be a bent rear axle.
Bent rim. You may rotate it to a rear wheel to reduce or eliminate wobble.
your bearings maybe gone.
loose wheel lug nuts
To properly true a bicycle wheel, you need a spoke wrench to adjust the tension of the spokes. First, identify any wobbles or uneven spots in the wheel. Then, tighten or loosen the spokes in small increments to straighten the wheel. Use a truing stand or flip the bike upside down to spin the wheel and check for any remaining wobbles. Repeat the process until the wheel spins evenly without any wobbles.
To determine if your bike's rear wheel axle is loose and needs tightening or repair, check if the wheel wobbles or makes unusual noises when spinning. If so, it may need tightening or repair. It's best to have a professional inspect and fix any issues to ensure safe riding.
To true a bicycle wheel effectively, follow these steps: 1. Use a spoke wrench to adjust the tension of the spokes. 2. Check for any wobbles or unevenness in the wheel. 3. Make small adjustments to the spokes to straighten the wheel. 4. Spin the wheel to check for any remaining wobbles. 5. Repeat the process until the wheel spins smoothly and evenly.
The front wheel wobbles side to side because of issues with the wheel alignment, loose bearings, or a problem with the tire balance.
Unbalanced wheels or a bent track rod
The wheel bearing
Rear wheel drive, 4x4 is dominate rear wheel drive
Rear wheel
possible warped brake rotors. have a reputable mechanic check them.