Car not staying grounded

Haven’t used this ask thing for ages but I’m having trouble with my car, it goes with Torque but the problem I’m having is when I keep A help down the car starts going forward once it gets to max speed it does a wheelie and doesn’t stay on the ground. I’ve looked at a few peoples questions and can’t get sense of it. Am I to make a raycast that picks up that my car is grounded or is they another method which might be a little simpler?

First up check your cars mass to torque ratio is realistic. A few light high powered vehicles (think motorbike) have this issue in real life. You should be able to find car mass and engine torque in any good car magazine.

Another alternative is to add a downwards force to your car proportional to your velocity. This is the equivelint of having an areofoil.