Consisting of 325 acres, the Bosch Flat Rock proving ground offers various surfaces such as a 22 acre vehicle-dynamics area that includes a 30 degree high bank curve, high and low-µ surfaces, special surfaces and traction hills.

Contact us:

Flat Rock Proving Ground
3701 Newburg Road
Flat Rock, MI 48134, USA
Phone: +1 734/789-2700
Fax: +1 734/789-2772

22 acres

vehicle-dynamics area for braking maneuvers, lane changes, J-turns, driving in a circle or slalom driving


Variety of rough road tracks for every terrain to put suspension and electronics through a rigorous test