In June 2018 we drove our Tiffin 32 gas motor home from eastern North Carolina to Whidbey Island, Washington. While on the island, I ordered and had installed Sumo Springs. The difference was apparent just driving out of the facility that installed them. The difference on the return trip was remarkable. Particularly improved was handling in strong crosswinds. The ride over bumps was greatly improved. It will still bang on the largest ones, but minor bumps are smoothed out and the impact from the larger ones is greatly reduced. My wife and I were extremely impressed and would recommend Sumo Springs to anyone with an F53 chassis.