Hawkeye111 Report post Posted March 23, 2012 Have a 2011 E-450 that rides really rough. I put Bilstein shock absorbers (Comfort Rides on the front and HD's on the rear) and recently put parabolic springs on the rear. It has helped measurably, but still rides very rough compared to the 2008 e-350 I had before. Also put heavy duty Roadmaster sway bars on front and rear and IDP steering stabilizer. They did help control but not ride. Anybody out there facing the same issue? Share this post Link to post Share on other sites
wolfe10 Report post Posted March 23, 2012 Let's start with the basics. What are your GAWR's (from the sticker by the driver's area/door? What are your actual front and rear axle weights? What are your tire manufacturer's recommended PSI for your actual weight? Is that the PSI you are carrying? Share this post Link to post Share on other sites
hermanmullins Report post Posted March 23, 2012 Brett is correct about tire pressure. Weigh each wheel and check your tire mfg. chart. If you put the max PSI that is listed on the tire this could be your rough ride problem. Example, your tire is rated at 120 PSI Max. and you put 120 PSI in your tires, on a hot day traveling on the Highway your tires pressure can increase 10 to 15 PSI or more and that = rough ride. Check your weight. Check Mfg. chart. Check your pressure. Adjust your pressure to Mfg. suggested PSI. Go for a ride. Better? Share this post Link to post Share on other sites
