Question about springconstraints

I’m currently rigging a car, and using a springconstraint for the suspensions. but i dont know how to modify the spring constraint to make it hard
this is how it looks right now:
image
the wheel is just rolling freely without being held by the suspension.
i need the spring to hold the wheel right below that part on the other attachment and the wheel doesn’t just roll away without carrying the car’s body. thanks.