My 2016 (auto trans, Mag suspension, 10,000 miles, bought used in January 20) coupe has a braking problem: If I pull into my garage with a concrete floor and lock the brakes, the rear wheels will continue to turn and even dig into my gravel driveway. If I release the brake pedal, the rear wheels will push the car forward, a potentially dangerous situation. I talked by phone to the corvette mechanic at the dealership where I bought the car and he had never heard of this problem. Due to Covid concerns, I'm not ready to take the car to the dealer. Car stops well at speed but then again, the front wheels do most of that braking. Anyone had this problem?