Originally Posted by donniedu
Look closely, Timbrens replace the factory bump stops with a larger piece that is suppose to act as a helper spring. Some people swear by them, others swear at them. Biggest complaint I have read is harsh ride when not ridding on them. Personally I would pass unless there is some specific reason you feel the need, like overloading? If thats the case, maybe you need to go on a diet and get your RV weight under control. No add ons are going to allow you an increase in load carrying capacity.
Not true.....The Timbrens don't even come into play unless there is a load causing the rear of the trucks to squat down thus bringing them into play. When installed properly there is about an inch or so gap between the bottom of the Timbren and where they would make contact with the axle when under a load. Without a load bringing them into play your truck would ride just the same as always.