Constraint car gets dragged off when its springs are off balanced

So I am trying to make my own constraint car for a game I’m working on, and it has been problematic to say the least. i’ve gotten pretty close to a usable product, but it has this issue where once its springs get offset, it gets pulled by an unknown force.

If the car flips over in this state, this happens:

it only seems to happen when the motors of the back wheels have their torque and acceleration set to something other than 0

heres the model if anyone needs to take a look:
CAR.rbxm (13.4 KB)

My initial reaction before i even ran the videos was that the vehicle has no weight… have you tried to give the body some density in the custom physical properties?

yeah, i ended up rebuilding the entire chassis and suddenly it started being semi-stable, so im not sure what the problem was at all…

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Ok nice… hopefully it drives well? If it starts to bug out look into collisions and weights, usually the first two culprits.