We bought a new caravan that weighs 7800 pounds. Our 2014 Ram 1500 sat in the back and driving the truck was next to impossible on the road. Our friend suggested Timbrens as a solution. I'm glad he told us about it. They were very easy and quick to assemble. Just go to Youtube! It took about 15 minutes! After installation, the truck became completely different. Improved handling and resilience. It feels like it weighs 3/4 tons! If you're towing a heavy trailer that behaves uncontrollably behind your truck these (along with a good anti-sway device/WDH) will solve your problem!