I see, im saying that because in the v1.4 was added and this was mentioned in the log:
“-Suspension constraint adds a joint to each wheel and updates their limits at each tick.
This works much better then “Hard Contact” option so this is the recommended solution now.”
Ok then, so now recommended is “Hard Contact Scale” tunned based on the car setup to avoid the bouncy behaviour but still enough to avoid reach the limit as much as possible.