Will Air Helper Springs Help to Eliminate the Rear End Sag on a 2007 Nissan Xterra  

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Expert Reply:

The Air Lift Ride Control, part # AL59562, is designed to fit your vehicle and will help somewhat with vehicle sag and or weak suspension when towing. The air bags are aired up using a valve, similar to a valve stem in a wheel on your vehicle, that is mounted at the back of the vehicle, usually by the license plate.

The issue you are encountering may be able to be solved in other ways that will be better in the long run though. The first thing I would do is, check the actual trailer weight and tongue weight of the trailer, fully loaded and ready to travel. If the tongue weight is greater than 15 percent of the total trailer weight fully loaded and ready to travel then you should move some of the gear in the trailer toward the rear of the trailer. Centered over the axles would be the best location to move this gear if possible. Try to get the tongue weight down to between 10 and 15 percent of the total trailer weight.

If the tongue weight is inline with the above recommendation then check you weight distribution system and make sure the spring bars are rated high enough for the weight of the trailers tongue weight. Next, make sure the weight distribution is set up properly using the instructions to get things just right. If you do not have instructions for your system let me know the manufacturer and part numbers and I will be glad to try to get a set of instructions to you.

Be sure that there is not too much weight inside the vehicle behind the rear axle. This weight is also considered tongue weight when towing.

If all of the above steps have been taken and the total trailer weight fully loaded and ready to travel is within the vehicle capacities then the Firestone Sport-Rite Air Helper Springs would be a very good choice to help out the rear suspension and to take the strain off of the rear end due to the drive shaft angle created by the sagging rear end.

expert reply by: Robert G

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