Faulty rear shock absorbers or struts.
The shocks only control the bounce of the springs. The springs actually control the ride height.
It's suspension in the forks and or rear of the bike.
They take the "bounce" out of the suspension, improve the ride and handling performance.
the answer is you just don't do that. and if you did. you must of hit a horse. because otherwise. the wheel wouldn't bounce. only everyone in the world knows that.
More then likely you shocks are bad
youre automatic air ride suspension went out it happens to alot of navigators/expeditions that came from the factory with rear air ride shocks
Replace the shocks, or struts if equipped.
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Compass jumpsA compass jump is a bicycling trick where you keep your knees slightly bent, feet together and stay on your toes at all times - bounce and move your feet forward (north), bounce and bring your feet back to the starting point, bounce and move your feet to your right (east), bounce and bring your feet back to the starting point, bounce and move your feet to the rear (south), bounce and bring your feet back to the starting point, bounce and move your feet to your left (west), bounce and bring your feet back to the starting point, repeat.
The springs in the rear support the weight of the car, and give it a smooth ride along with the shocks.
Horses can rear sometimes but it happens if you pull it to tight or if you pinch the horse horses i ride do not rear but by training it could help!
there is no way to adjust the ride height other then aftermarket suspension parts