How To Measure Trailer Axle Alignment. Measure your axle track length by determining the distance between the center of one tire to the center of the other tire. Similarly, it is asked, how do you fix a trailer axle alignment?

Next measure from the straightedge to the frame in back of the wheel & compare the two measurements. Next measure from the straightedge to the frame in back of the wheel and compare the two measurements. Lots of times people use the front stub axles off cars and weld a piece of square or round pipe between them for the axle.