Trailer tires not wearing even.

bruceb58

Supreme Mariner
Joined
Mar 5, 2006
Messages
30,545
Re: Trailer tires not wearing even.

In image 3 the side wall says ..(can't see the rest)..5D15. D designates bias ply. R would be a radial.
OK...I couldn't see that. Thought you had some magical way of telling form the shape of the tread. :)
 

agallant80

Commander
Joined
Oct 25, 2010
Messages
2,328
Re: Trailer tires not wearing even.

Well at any rate I did it to myself. The tires were not inflated to 65PSI. They were inflated to 55PSI and when I looked at the ones still holding air the other day they were at 40. It will be my $600 lesson in trailer tires. I will always check them and fill them up to the proper PSI from now on. For those of you saying that some of them look fine, they do in the photo but the tread in some spots is starting to come off and they have cracks in the sidewalls. After I get good tires on her I will measure every thing to make sure the axles are aligned properly to the trailer. Though at this point I am pretty much there is only one thing to blame which is me not paying enough attention to the tires.
 

Macfarms

Cadet
Joined
Aug 6, 2012
Messages
11
Re: Trailer tires not wearing even.

I had the same problem on a new Heritage trailer. Measure from end of hitch to center of the end of your spindle. Sometimes when they weld the spring shackles on they get them off a little and that will ruin a new set of tires pretty quick. Another way is to measure distance between the front and rear tires on each side.
 

phillyg

Petty Officer 1st Class
Joined
Jul 26, 2007
Messages
209
Re: Trailer tires not wearing even.

I read and re-read the entire thread before offering the following: OP has outside edge wear only on the rear tires. That's not indicative of scrubbing when turning sharply, low pressure or overloading, as those issues cause even outside edge wear on both sides of the tires. ST tires should be run at their max, 65psi. He was at 55psi; don't think that's the problem, either. Outside edge wear on only one axle's tires is indicative of incorrect toe in/out, or more likely, an improper pre-bend on that axle alone. Any good truck spring/alignment shop should be able to check and adjust the rear axle to completely eliminate the problem.
 
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