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Need trailer tire help
I think a taller tire is the answer:
1) It is much easier to find the weight rating you need in a larger tire.
2) Every inch you add to the height of a tire only lifts your trailer 1/2 inch but adds over 3 inches to its rolling circumference.
3) Add enough inches to the circumference and your can slow the tire way down in terms of revolutions per mile and that in turn will slow down it flexation rate, and therefore it will have less heat build up and decreased failure rate.
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Need trailer tire help
Personally I would stay away from the 12" wheel. I have them on my boat trailer but the Seadoo is very light and does not move on the trailer with tiedowns.
I have never seen them stand up with heavier loads or work well with tandem axels. I wish I had a dollar for every old tandem 12" boat trailer rig I had seen in my travels with blown tires.
With dynamic loads like a tractor, ie the wheel will flex as it corners etc. loads are transfered to 2 or 3 tires. If you have 2 tires carrying a load of 4 for a moment then you are asking for a blow out.
I guess I am not certain as to why you need to so low. My trailer with dove tail has a deck near 2 ft of the road. I have never had any trouble loading with 4x and ramps.
I would look at possibly the wider rims and the commercial tires used as moving dolly tires.
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Need trailer tire help
Maybe somebody who knows trailering better than I can comment. I think it's pretty certain that taller tires would be better. I'm wondering about a solution where the 12" ones might get by. I believe Hal reduced the tire pressures from the max pressure ratings because there was a lot of 'chop' to the trailer. There's a good chance that the load is excessive for the reduced pressures. I'm wondering if a load distributing type receiver might reduce the chop and make operating with higher pressures more comfortable?
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Need trailer tire help
I always order the oversized tires whenever I purchase a vehicle/trailer for obvious reasons, but you have to work with what you have there. Something doesn't seem right here and I would suggest you check the axle alignment on that new trailer to see if it is tracking true. Beyond that, proper weight placement as Tom suggested and a larger tire would definately help reduce heat and stress.
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Need trailer tire help
My 2cents. Have you weighed the trailer/tractor combo to see if it is a weight problem(if the tongue is high most weight will be on the back axle)? Look in the phone book for public scales. And is it the same position tires that are blowing(could then point to loading tractor position)? Are the axles close together or spread apart? Spread axles and tight turns can cause sidewalls to break on tires. Another option for tires would be to move up to 20.5X8.0-10 loadrange C/D same weight rating about 1050 but less sidewall flex.
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Need trailer tire help
Hal, sorry I've been at home doing some remodeling. Now your tires have just over 4000 lbs capacity. your tractor weighs about 3000 from what you have said. That means that the trailer has to weigh in at less than 1000lbs for the tires to be in there capacity range. A range of 4400 lbs overloads your tires.
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Need trailer tire help
That would be a pretty marginal overload to cause them to wear out in 500 miles would it be not Art? I still believe axle placement or alignment is the problem here, I have run overloaded on four ply rated junk tires and never had a problem with them flying apart.
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Need trailer tire help
Thanks very much for all the advice guys. Axles are close together and it has always been the front tires that have failed. I will try loading closer to the rear of the trailer. I have also gone back to the manufacturer and told him I am not too happy and what does he suggest. No feedback yet. A friend suggested the springs are too stiff for the load and are not giving any. Therefore the tires have to take all the pounding and are breaking the sidewalls. When it all gets done I think 14" wheels are in the picture.
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Need trailer tire help
Hal, with big trucks it is normally the rear tires that will get flats due to the front ones standing sharpe
pieces up. Now on another side. Do you load the tractor to the front? What else do you have on it? The fronts are overloaded from the description of what is going on..
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Need trailer tire help
We have a pickup with a trailer on the road delivering a tractor or picking up things almost everyday. I have had a couple of flats, but never a blowout or other outright failure. I think the key its to not be running right at the margin. Installing some 8-ply 14" tires will give you a lot of comfort and if your 4x4 tractor can't climb a couple more inches of ramp, then we have another subject to discuss!
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04-14-2017, 20:30 
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