Caster flutter

Caster flutter is when the wheels on the bottom of a vehicle shake and wobble too much. It's like when you're riding your bike and the front wheel shakes back and forth really fast, almost like it's out of control.

This can happen on vehicles with a type of suspension called a caster. This suspension helps keep the wheels straight and stable, but if something goes wrong, like a bump or a turn, the wheels can start shaking and wobbling.

It's important to fix caster flutter because it can make the vehicle hard to steer and even cause it to crash. So, just like how you would fix your bike's front wheel when it's shaking too much, mechanics need to fix caster flutter to make sure the vehicle runs smoothly and safely.