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Old 08-09-2007, 08:44 PM   #155
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Trailer Tires

mikeand becky
My 84 31 foot Excella originally came with Michelin XCA 700-15 8 ply. My 31 foot is a bit heaver than yours.
I ended up going to 16 inch rims (eagle alloy 0589-7766-1-AA) and BFGoodrich Commercial T/A 225/75R16 Load range D Speed rating of 99MPH same tire as lewster.They were mounted, inflated with nitrogen, but not balanced by Costco and I inserted balancing sand in them for ballancing. 1 and 1/2 seasons on them and I have not even had to add Nitrogen to any of them (Pressure Pro Tire Pressure Monitering System).
The Commercial T/A in 225/75R16 is the same outside diameter as the original Michelin XCA and the same width in the widest part of the sidewall as the ST 225/75R15.
Reguardless of which tire you go with I strongly recommend you purchase a Tire Pressure Monitering System because if a tire loses pressure and comes apart you cannot feel it in the tow vehicle. A passing motorist will tell you about it.
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Old 08-09-2007, 10:11 PM   #156
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I'm still debating what I should go with. I dont relish the thought of spending buku bucks ( again ) on tires, but thats a necessary evil. I just recently spent close to one grand on tires alone for my Dodge pickup. But those Cooper STTs look pretty nice... Anyways, I am still looking for others input on what they run on their larger Airstreams, like mine. Thanks!
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Old 08-09-2007, 10:27 PM   #157
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Originally Posted by mikeandbecky
So, my question is, should I replace the Excella's tires with the original C rated ( like the popular ST 225/75R/15's, or should I go up to the ST 225/75R 15 " D " rated?
either will work based on your trailer gwr.

the c rated would be inflated to max psi (50)...

while the d rated could be inflated based on axle loads (50-55psi) if you are concerned about 65psi being too firm.

a point of clarification that is badly and sadly abused in the 'lets trash marathon threads'...

st tires are NOT rated to 65mph...

they don't carry ANY speed rating that is compatible with passenger or lt tires.

they are LOAD RATED at 65 mph...

the means the load carrying parameters are established at 65mph.

it does NOT mean 65 mph is the speed rating.

they don't carry a speed rating...

goodyear infact offers inflation guides IF planning to tow at speeds greater than 65mph.

the common speed ratings (now used) are the speeds tolerated for a defined time, before the tire fails.

these speed rating ONLY apply to passenger tires and some LT tires...

so an "R" rated tire will handle 130 mph, while a "H" rated tire will only handle 118 mph for 10 minutes before failure...

in 15s there are some light truck tires that are available in 225/75/15 or 235/70/15 that will fit a/s wheels...

the 'cargo' tires were used on many delivery vans like the mercedes/dodge/freightliner sprinter van.

IF you opt for this make sure the LOAD RATING is adequate...

goodyear, for example has two tires...

the 'cargo vector' and 'cargo g26' that will fit a/s wheels and have adequate load capacity....

cheers
2air'

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Originally Posted by mikeandbecky
Anyways, I am still looking for others input on what they run on their larger Airstreams, like mine. Thanks!
many of us are still using marathons with good results....

http://www.airforums.com/forums/f438...ons-27999.html
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Old 08-11-2007, 12:18 AM   #158
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Originally Posted by lewster
Hey Mike,

I'll tell you what I did, although there are some that will dis-agree. I didn't like the Marathons with their 65MPH speed rating, tread separation stories, no ability to run in the extreme heat of the desert SouthWest where I frequently travel, etc. PLUS.....all of this on a single axel trailer....I DON"T THINK SO!!

I not only went with LT tires, but I bought new 16" rims for the BF Goodrich LT225-75-15 LRE tires that now adorn my 19CCD. These are the same tires that I run on my Sprinter van and have had no issues with them in over 80K miles.

The new BFGs have about 4K miles on them and they are great! I also sleep much better now that the Marathons are gone!
Lew, what rims did you buy, were they similar to the original Alcoa aluminum wheel in style and load rating?
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Old 08-11-2007, 10:02 AM   #159
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Lew, what rims did you buy, were they similar to the original Alcoa aluminum wheel in style and load rating?
Hey Don,

The rims are from Trailer Tires and Wheels - trailer tires, boat trailer tires, trailer wheels, boat trailer wheels, aluminum trailer wheels and have a load rating of 3200lbs IIRC. They are the 5 spoke pattern, and are identical to the new rims that the Safari is coming with from the factory.

I also use a Pressure Pro tire pressure monitoring system AND add Ride-On tire sealant to all of my tires. Flats on single axel trailers and motorcycles are NOT an option!!
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Old 08-11-2007, 08:28 PM   #160
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Message for Andy

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
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Old 08-11-2007, 08:33 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 08-12-2007, 12:08 AM   #162
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Quote:
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.

Andy
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Old 04-26-2013, 10:57 AM   #163
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Quote:
Originally Posted by Inland RV Center, In View Post
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, 11:12 AM   #164
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Is it better to have 6" or 7" wheel widths?
To me, no difference.

Andy
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Old 04-26-2013, 12:05 PM   #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, 09:16 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, 01:21 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, 01:45 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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