1993 Buick Regal Owner's Manual - Page 193

Front Towing Hook-Ups (Coupes Only) ,- over rough surfaces, install a towing dolly beneath the wheels that would otherwise o be the ground during the tow. This will increase the clearance between the wheel-lift equipment an6 the underbody of the towed vehicl* Use wheel lift or car carrier equipment. Additional ramping may be required for car carrier equipment. Use safety chain and wheel straps. 191