Car is jittering for some reason when I stop?

For some reason the car keeps jittering every time I start to slow down. I’m using the roblox kit car. I’ve been playing with the stiffness and the damping on the tires. I also changed the density of the base to the car to be heavier. Any suggestions?

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Switch to bigger cylindrical wheels or use spherical wheels instead, I’ve had it happen before it’s a collision problem.

Edit: here’s a video and post about it with other people having the same problem:

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+1 for using spheres instead of cylinders.

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I had the same problem, and I was able to fix it by increasing the stiffness and damping to a very high level.

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Yeah that’s what I did. It helped by reducing the jittering.

What are the values right now?

Damping: 900
Stiffness: 50,000

(Keep in mind my density of the car goes to 17)

Is the car body aside from the weight brick massless and is the weight brick positioned low for a low center of mass?