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Discussion Forum

Trailer tire wear and alignment

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truck

04-23-2000 19:20:39




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I bought an el cheapo "Carry -on " 16 foot dual axle landscape trailer from Central Tractor a little over a year ago and the tires are already worn out. One wheel seemed toed out, as it was worn on the outside badly. All the rest had major scalloping. I was majorly surprised by the pricing of trailer-specific rubber, but managed to find a deal. I do a lot of long distance towing, and would like to know any hints for wheel aligning and preventing the scallop wear. Thanks guys!

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ALSO CHECK THIS......

04-24-2000 14:17:55




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 Re: Trailer tire wear and alignment in reply to truck, 04-23-2000 19:20:39  
A friend had a problem with a single axle.He checked distance from tongue to hub both sides;that was fine.Then,after considerable checking he found that the hubs were not attached to the axle square(90 degrees).This would look like a "T" when viewed from above tire.Square the hub to the axle.He replaced the axle/hub assembly with a new "squared "one. Good luck.



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Cotton

04-24-2000 07:34:39




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 Re: Trailer tire wear and alignment in reply to truck, 04-23-2000 19:20:39  
First you should measure from the center of the tongue to the hubs on each side of the front axel. This measurement should be equal, if it is not fix it. Once this is done you may allign the rear axel. Center hub to center hub should be the same on both sides of the trailer. If I were you I would call the factory and ask them to fix the problem if the axel hangers are not seated correctly. Minor allignments are not unusual from time to time but a mistake in manufactoring is not your problem.

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clooney

04-24-2000 06:33:41




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 Re: Trailer tire wear and alignment in reply to truck, 04-23-2000 19:20:39  
Truck, if the wear is on the "outside" then you probably have toe-in or a misaligned axle. If the scalloping is even all around the tire it is an alignment problem. If the scalloping is un-even (only in certain places) then it is a tire-wheel balance problem. Do as Dan said but do it with the load you carry the most on it. Those trailer axles bend with a load on them. You might want to rotate the tires more often also. With the trailer loaded measure between the axles on both sides to see if they are the same distance apart on both sides. You might have a "set back" problem on one of the axles. If there is a difference on one side loosen the "U" bolts on the axle clamps & see if you can even it up some.

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truck

04-24-2000 07:18:33




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 Re: Re: Trailer tire wear and alignment in reply to clooney, 04-24-2000 06:33:41  
Half the distance I travel is unloaded, and I often see air between the tires and pavement.. Is it possible that they have developed the even scalloping from unloaded use and constant bouncing?



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clooney

04-24-2000 07:39:28




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 Re: Re: Re: Trailer tire wear and alignment in reply to truck, 04-24-2000 07:18:33  
Truck, yes unloaded trailers are hard on tires. I usually let the air pressure down to about 22lbs on my trailer when I haul it empty to keep the tires from bouncing off the road. That also makes for a better ride in the pull vehicle. Make sure to have the wheels balanced on the trailer also.



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Dan from PA

04-23-2000 20:14:16




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 Re: Trailer tire wear and alignment in reply to truck, 04-23-2000 19:20:39  
A good way to check tire alignment:
1) jack up a tire
2) give the tire a healthy spin and hold a piece of chalk up against the middle of the tread to make a chalk band the whole way around the tire (or just drive it someplace dusty, first).
3) spin the tire again and scribe a line in the dust with a nail or something. Prop up your hand with a short piece of 2x4 (don't stub your fingers on the tread) or use some kind of steady rest.
4) do same with other tire
5) measure toe from line to line. Don't go from sidewall to sidewall, especially on radials. They're too lumpy. Trailers should have a hair of toe-in (1/8" or so on a 15" wheel).
I realized a while back that I shouldn't buy anything from CT that I didn't absolutely have to.

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BFO

04-23-2000 19:52:12




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 Re: Trailer tire wear and alignment in reply to truck, 04-23-2000 19:20:39  
Sounds like the axle is bent, if the wheel is towed-out. Cheap trailers tend to use cheap axles.
Take diagonal measurements from the hubs to see if the suspension was put on square. ie from front right to rear left, and visa-versa. Also take measurements from the front hubs to the centre of the tongue. Compare them to measurements from the rear hubs. Might be as simple as putting on new axles, or as complicated as cutting off the spring hangers and refitting them.

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