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Old 08-11-2007, 07:33 PM   #161
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225/75 R15 should be the right size unless a PO made wheel modifications. My only advice would be to bring along a spare.
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Old 08-11-2007, 11:08 PM   #162
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Originally Posted by Haoleman
I'm going to purchase a 1983 excella 27. It has mag wheels. Might you know the size of the tires? Seller says one needs replacing before moving it. Been sitting for 2 years. As I don't know if any are available around Brainerd Lakes in Minnesota, I would like to pick some up and bring with and have a local shop change them unless I can find a shop that has them in the area.

Thanks,
Terry
Check the condition of the axles.

A torsion axle equipped trailer, must not be simply parked for an extended period of time, unless weight is taken off the axles by having the trailer supported with jack stands or better.

The rubber rods can and do take a set.

When that happens, the rubber becomes hardend, therefore is useless in absorbing road shock.

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Old 04-26-2013, 09:57 AM   #163
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You can obtain the wheels from many sources.

But, they must be a minimum rating of 2600 pounds, each.

Andy
Is it better to have 6" or 7" wheel widths?
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Old 04-26-2013, 10:12 AM   #164
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Is it better to have 6" or 7" wheel widths?
To me, no difference.

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Old 04-26-2013, 11:05 AM   #165
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We do not recommend using passenger/light truck tires on trailers that specify ST tires. If the trailer manufacturer calls for ST tires, it is important to replace with ST tires in order to maintain the load requirement.

We are sorry, but we do not make anything that would be comparable to an "ST" rated tire.

We appreciate your business and thank you for choosing Michelin.

If we can assist you further, please call us at 1-800-642-4354 (toll free) between 8:00AM and 8:00PM Eastern Time Monday through Friday or between 8:30AM and 4:30PM Eastern Time on Saturday.

Sincerely,

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Old 05-04-2013, 08:16 AM   #166
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I just completed a 2,215 mile round trip from Pleasanton, TX to Tallahassee, FL and back on my new 16" Michelin MS-2 LT's. I also had my Hawkshead tire monitir system in place. My overall mileage went up from 8.2 to 8.6 which I am attributing to bothe the new tires and freshly packed bearings. If I didn't have a 50 mph headwind the last day of driving, my mileage may have been even better. My tires never got above the ambient temperature on the whole trip. Tire pressures stayed the same within 1-2 psi even on the warmest day. I would highly recommend these LT tires as a much improved setup over any ST tire out there IMHO. Facts is facts, too many failures with ST tires, regardless of who makes them.
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Old 05-14-2013, 12:21 PM   #167
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We put some 205C 14 Kumho 857 tires on the trailer. They have a load rating of 2270 lbs each at 65 psi. They will only be carrying 1550 lbs each. What pressure should I carry in the tires? The original Marathons were inflated to 50 psi.
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Old 05-14-2013, 12:45 PM   #168
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After having a tire failure, I put 8 ply rated tires where I previously had 6 ply tires. The new ones are rated for 65 psi. The old ones at 50 psi. The rims are OME Airstream alloys. Can I mitigate the chance of split rims by carrying a lower pressure?
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Old 05-15-2013, 05:34 AM   #169
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We put some 205C 14 Kumho 857 tires on the trailer. They have a load rating of 2270 lbs each at 65 psi. They will only be carrying 1550 lbs each. What pressure should I carry in the tires? The original Marathons were inflated to 50 psi.
It's a little unclear, but is the 1550# figure an actual worst case load on the tire? Or is it the result of weighing the axle?

Assuming it is based on the axle load - I would add 15% to the value to account for the side to side variation, then add 15% to that to add unused (reserve) capacity - and the result is 2050#.

And lastly, I don't think there is much of a risk of the wheel failing due to pressure. Everything I have been able to gather about wheels says that load is way, way more important than inflation pressure.

Then going through the load calculation, the result is 61 psi. Rounding up results in 65 psi - and since this is the max, it would be easy to remember.
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Old 05-18-2013, 01:04 AM   #170
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From what I'm reading the Kumho is just another ST rated tire. Ideally you'd run it at the lowest pressure but I'd check the company website (hope they have one) to see what the minimum pressure is. Run as low as practicable without jeopardizing integrity.
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Old 05-18-2013, 06:57 AM   #171
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From what I'm reading the Kumho is just another ST rated tire. Ideally you'd run it at the lowest pressure but I'd check the company website (hope they have one) to see what the minimum pressure is. Run as low as practicable without jeopardizing integrity.
I believe the Kumho 857 is actually a Q speed rated light truck tire, that is manufactured for both LT and trailer use.

ST rated tires, as far as I know have no speed rating, and are therefore limited to 65mph when inflated to max sidewall listed psi..
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Old 05-18-2013, 10:32 AM   #172
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I wasn't clear on what table to look for. The basic specs list max load 1874 lbs. and 65 psi max pressure. The maximum load is only at 65 psi. Somewhere Kumho should have a spec sheet that shows how much to derate the load for lower pressure. Also, safety factors are already built into these specs. More if it's a LT tire than an ST tire because A) it's considered a matter of life safety and B) tire stress on a steering axle is more than you'll have a trailer tire. So, don't add in additional safety factors on top of the manufacturers spec.
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