How to Tuck Your Car’s Front and Rear Bumpers. Trim and fit the bumpers for weight savings and good looks on your race car or show car. Tony Thacker Writer Jan 19, 2023. See All 37 Photos.

The 5 mph bumper rule was part of NHTSA Federal Motor Vehicle Safety Standard No. 215, Exterior Protection. It went into effect in September of 1972, coinciding with the 1973 model year for ...