Quote:
Originally Posted by m2n
Also if you go over speed bumps too fast the car will bounce on its suspension, so it will be at its lowest point on the downward bounce and will hit the road either, exhaust, engine tray or u/s the springs or suspension
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Bump stops should prevent the car underside from hitting the normal road surface. Just had a thought, does the OP have mudflaps? My front ones will scrape on the road where there are long undulations taken at speed. Not the same as undertray touching pyramid humps taken at walking pace.