Typical Axle Diameters Based on Axle Capacity

Question:

I get it about the axle capacity. The problem is, with my old unit, the GVWR label has rubbed off so I have no idea what the trailer is actually rated for or if the 4.80 x 12 tires that came on it are even appropriate. In my beginners logic, I figured whatever the axle is rated for, if I get the max capacity in the tires, hopefully Ill be okay with no problems. To my astonishment, even Viking didnt know the GVWR, of my unit when I phoned them. Just trying to go a little overboard in hopes I am getting it right. I didnt know the exact measurements of the 5.30 tire, but I do have clearance for a larger tire. Appreciate your advice! Thank you!

asked by: Randy H

Expert Reply:

I might be able to help you get a closer idea of what your axle capacity is. There are also some typical axle dimensions/capacities.

Typical Axle Diameters Based on Axle Capacity:

1,000-lb - 2,000-lb Axles: 1-1/2" - 1-3/4" diameter
3,500-lb Axles: 2-3/8" diameter (Can have a 3-1/2" diameter, but rarely)
6,000-lb - 7,200-lb Axles: 3" diameter
8,000-lb Axles: 3-1/2" diameter
9,000 lb Axles: 4" diameter
10,000-lb Or more axles: 5" diameter

expert reply by: Jameson C