What is the Overall Width and Diameter of a 235/80R16 Size Tire  

Since your Grand Design is going to be well over the 10,000 lb cutoff, the Electric Ground Control TT Automatic 5-Point Travel Trailer Leveling System #LC672136 is not going to work, unfortunately. Your best option is to put one Ultra-Fab Power…

The 6-Leaf Double-Eye Spring for 7,000 Pound Trailer Axles #e64SR does indeed have a length of 24-7/8 inches from the center of one eye to the center of the other. It has a width of 1-3/4 inches and 6 leaves. I have attached a short video review on…

To determine the location for the front and rear hangers on your tandem axle trailer you will first need to make sure that you have the correct center point for your equalizer hanger. The center point of your equalizer hanger needs to be located…

It is not uncommon for the trailer hangers on a tandem axle trailer to be all the same size or for there to be different sizes that can be 1-1/2 to 2 inches different in height when you compare the center hanger to the front and rear. For example,…

The king pin dimensions can be the same between fifth wheel trailers and large commercial trailers. Both types of trailers often use a standard 2 inch king pin although semis sometimes have a 3-1/2 inch. As long as your truck fits a 2 inch king pin…

The recommended distance between the hangers of the #APS1 would be 24-7/8 inches when using the leaf spring #e54SR. When the trailer is set on the ground and the leaf spring is supporting the weight of the trailer the spring will flatten out and get…

To determine the correct length of leaf spring on a 7,000 lb axle, all you have to do is measure from the center of one spring eye to the center of the other spring eye. Keep in mind your current springs will have elongated a bit over time so you can…

For your double eye springs that are 25-1/2 inches, it is likely your hangers are 29-1/2 inches apart on center and your springs most likely were originally 25-1/4 inches as they will stretch slightly over time. For instance if you were to use 25-1/4…

A leaf spring like the part #e57SR has a distance of 25-1/4 inches between the spring eyes. I did some checking and the hanger kit you would want is the Single-Axle Trailer Hanger Kit #APS4. And the distance between the spring hanger centers should…

Thank you for the measurements you provided and for the photo of your trailer suspension mockup showing the spring components' spacing. As long as your shackles do not hit the trailer frame (you mention 1/8-inch clearance) you should be fine, but…

The leaf spring hanger positions are largely dependent on which equalizers and leaf springs you will be using. For example, if you were to use the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs part #APT3 with the 5-Leaf Double-Eye Spring for…

We do have a wiring diagram for you! Whether you have the 1,000 psi Dexter DX Series #K71-650 or the 1,600 psi Dexter DX Series #K71-651 the wiring will be the exact same. I have attached a wiring diagram and review videos for you to check out. Just…