How to Determine Which Over Under Kit will Fit Trailer to Allow Larger Wheels to be Installed

Question:

I would like to run bigger tires on this trailer.I currently have 12inch tires on it.Do you have springs available to be able to run 14inch tires or a kit to flip the springs?

asked by: Mike O

Expert Reply:

The diameter of your trailer axle will determine the size of the parts that you will need to order to get additional lift out of the trailer. If your axle is 3 inches diameter, the Dexter Trailer Springs Over-Under Conversion Kit, # K71-385-00, would be a great choice and if your axle is 2-3/8 inch diameter you could use the Over-Under Kit, # K71-384-00. These kits can be installed without welding but the manufacturer strongly recommends having the new spring seat tacked in place on the other side of the trailer axle.

Some refer to this process as "flipping the axles," but since axle has a slight bow to it you can't just flip them and reinstall them under the springs using the same spring seats. You have to install new spring seats on the opposite side of the axle so that it can be moved below the spring.

expert reply by: Jameson C