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Old 12-22-2013, 11:48 PM   #21
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Originally Posted by sidney View Post
What's the difference between taking off snow tires and letting them sit for 6 months then putting them back on your vehicle... then putting your summer tires back on after sitting 6 months?
Your "off duty" tires probably don't sit outside in the elements and sun. Big difference.
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Old 12-23-2013, 12:14 AM   #22
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Your "off duty" tires probably don't sit outside in the elements and sun. Big difference.
That's true... but neither are the trailer tires.

It's easy to keep your tires out of the elements and out of sun light while still on the trailer.
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Old 12-23-2013, 01:37 AM   #23
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What's the difference between taking off snow tires and letting them sit for 6 months then putting them back on your vehicle... then putting your summer tires back on after sitting 6 months?
There is no weight on them.

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Old 12-23-2013, 01:42 AM   #24
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There is no weight on them.

A
You can take the majority of weight off your trailer tires (and springs) by supporting the trailer on jack stands while in storage.
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Old 12-23-2013, 05:29 AM   #25
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Most of the passenger car tires I've seen don't have anywhere near the load rating of the ST tires. I can understand folks using LT tires but not passenger "P" tires.
Oakman has really hit the nail on the head, for the biggest reason you shouldn't use passenger tires on trailers..........as well as the other reasons that many members have pointed out (internal construction, chemical composition, etc).

Points to ponder:

1. If passenger designated tires were the answer (and legal), then trailer manufacturers would use them, since they are usually cheaper in price and more readibly available.

2. I stated "legal" above because vehicle and trailer/RV manufacturers must adhere to Federal Motor Vehicle Safety Standards (FMVSS). These standards state what the load capacity has to be for tires mounted on vehicles and trailers/RV's. The tires have to carry what the axles are capable of.

We need to familiarize ourselves with a few parts of the FMVSS, which are the regulations for trailers/RV's under 10,000 pounds GVWR and the ones for trailers/RV's over 10,000 pounds GVWR..................as well as to what tires can meet the specs in the regulations.

Under 10,000 pounds:
Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of 4,536 kilograms (10,000 pounds) or less - Federal Motor Carrier Safety Administration

S4.2.2 Tire load limits for multipurpose passenger vehicles, trucks, buses, and trailers.

S4.2.2.1 Except as provided in S4.2.2.2, the sum of the maximum load ratings of the tires fitted to an axle shall not be less than the GAWR of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. If the certification label shows more than one GAWR for the axle system, the sum shall be not less than the GAWR corresponding to the size designation of the tires fitted to the axle.

S4.2.2.2 When passenger car tires are installed on an MPV, truck, bus, or trailer, each tire's load rating is reduced by dividing it by 1.10 before determining, under S4.2.2.1, the sum of the maximum load ratings of the tires fitted to an axle.

Over 10,000 pounds:
Tire selection and rims and motor home/recreation vehicle trailer load carrying capacity information for motor vehicles with a GVWR of more than 4,536 kilograms (10,000 pounds). - Federal Motor Carrier Safety Administration

S2. Purpose. The purpose of this standard is to provide safe operational performance by ensuring that vehicles to which it applies are equipped with tires of adequate size and load rating and with rims of appropriate size and type designation, and by ensuring that consumers are informed of motor home/recreation vehicle trailer load carrying capacity.


S5.1.2 Except in the case of a vehicle which has a speed attainable in 3.2 kilometers of 80 kilometers per hour or less, the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. Except in the case of a vehicle which has a speed attainable in 2 miles of 50 mph or less, the sum of the maximum load ratings of the tires fitted to an axle shall be not less than the gross axle weight rating (GAWR) of the axle system as specified on the vehicle's certification label required by 49 CFR part 567. If the certification label shows more than one GAWR for the axle system, the sum shall be not less than the GAWR corresponding to the size designation of the tires fitted to the axle. If the size designation of the tires fitted to the axle does not appear on the certification label, the sum shall be not less than the lowest GAWR appearing on the label. When a passenger car tire is installed on a multipurpose passenger vehicle, truck, bus, or trailer, the tire's load rating shall be reduced by dividing by 1.10 before calculating the sum (i.e., the sum of the load ratings of the tires on each axle, when the tires' load carrying capacity at the recommended tire cold inflation pressure is reduced by dividing by 1.10, must be appropriate for the GAWR).
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Old 12-23-2013, 09:07 AM   #26
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lots of interesting data. my original question has been answered. i will use nothing but top of the line trailer tires when the time comes , and keep them well maintained. mainly monitoring the tire pressure.
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Old 12-23-2013, 09:16 AM   #27
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I would definitely not use P tires. You can Google ST vs LT tires though and get many threads from different forums that go back years.
The discussions can get pretty heated on both sides. There seems to be many people that swear by LT tires if the proper load rating is used and the rim can handle the air pressure. There's a lot of talk about " China bomb" ST tires and such.
From what I have read so far it seems that a lot of former ST users have pics and horror stories of ST tire failures and such. I'm sure that a fair share of those are due to operator negligence , road hazard and such.
The interesting thing is that I haven't yet read where LT tire user went back to using an ST tire. I'm not saying it's not out there I'm just saying that I haven't read any yet.
If anybody has any thread links or experience with LT users going back to ST tires please share the link. I have already read a lot of the documentation and official recommendations that have been pasted on threads. I would like to read some real world experience.
I have pulled many types of trailers for years. I always pre trip my vehicles before hitting the road so I already know the importance of tire care. I'm just a little concerned about my ST tires causing me a problem. I have new trailer and will be carefully monitoring my ST tires for sure.
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Old 12-23-2013, 09:26 AM   #28
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RKR, all I can add is additional conjecture. But I decided to stick with ST and simply opted for a high quality brand with a proven track record (Maxxis). It gives me peace of mind.
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Old 12-23-2013, 10:26 AM   #29
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RKR, all I can add is additional conjecture. But I decided to stick with ST and simply opted for a high quality brand with a proven track record (Maxxis). It gives me peace of mind.

I'm running Towmaster STR's on 16" rims. I'll take care of them and keep a very close eye on them. Hopefully they will hold up. I really don't want to spend money upgrading new tires to another set of new tires.
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Old 12-23-2013, 10:29 AM   #30
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I'm running Towmaster STR's on 16" rims. I'll take care of them and keep a very close eye on them. Hopefully they will hold up. I really don't want to spend money upgrading new tires to another set of new tires.
Understood and agree. I only did it because I lost one tire to a nail and a second to a manufacturing defect (exterior bubble that I saw and 2 interior bubbles that I found after the tire place took the tire off of the wheel). Instead of replacing 2 with OEM tires, I went ahead and bit the bullet for 4 new tires.
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