Comparison of Round Bar and Trunnion Weight Distribution System For a 2009 Toyota Tundra Crew Max

Expert Reply:

The difference between the # RP66088 and the # RP66084 weight distribution systems is the style of spring bar attachment. The # RP66088 system has round bar style spring bars, these spring bars are a bit harder to install and hang a bit lower, closer to the ground, than the Trunnion style spring bars. This system is a bit more economical than the Trunnion style system and would work great for your vehicle and trailer.

The # RP66084 system has the Trunnion style spring bars, that traditionally are use for higher tongue weight capacity applications, like construction trailers, and applications where ground clearance can be an issue. They are also a bit easier to install than the round bar style spring bars, but not dramatically so. This system would also work well for your application.

We also carry the Blue Ox SwayPro Weight Distribution System, item # BXW1500, that has a different style of trunnion bar setup. Sway control is built into the head of this unit, and is adjustable for varying conditions. The spring bars install easily into the trunnions that stay in the weight distribution head, and the tip up brackets have a very easy to use design. I would choose this system for its easy to use features.

Using air bags or a suspension enhancement like the Timbren Aeon hollow rubber springs will improve the ride of your vehicle when towing, but will not give you extra capacity and is not recommended as a fix for vehicle sag. The best solution for vehicle sag is weight distribution. The reason for this is the suspension enhancement will not distribute any of the tongue weight to the trailer axle or front axle of the vehicle. It is much safer to use a weight distribution system to reduce vehicle sag and trailer sway, than trying to modify the vehicle suspension. If you are experiencing a rough ride after proper installation of a quality weight distribution system, that would be the time to consider suspension enhancement like air bags or Timbren Aeon hollow rubber springs.

For your 2009 Toyota Tundra CrewMax we have the Firestone Ride-Rite Air Helper Springs, item # F2445, and the Timbren Rear Suspension Enhancement System, item # TTORTUN4.

expert reply by: Bob G