How To Determine Where To Mount Your Axles On A Trailer Build

Published 01/12/2024

Question:

How do I calculate the 60 40 on a 14’ foot trailer for axle placement

asked by: Pedro M

Expert Reply:

The 60/40 rule of thumb method would have the center of the axle spaced at 8.4' (14' x 60%) from the center of the coupler. For tandem axle trailers this is where the equalizer would sit. The key is going to be setting the axles so that the tongue weight sits at 10-15% of the total trailer weight. I've attached a help article below going over how where to place the axle and the formulas needed to determine where to move the axle(s) if the tongue weight falls above or below 10-15%.

expert reply by: Kevin C