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Old 08-26-2012, 11:24 AM   #1
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Spare Tire Cover - Do they make maroon?

Hey All,

I'm looking to get a spare tire cover for my 14" wheel that hangs on the back of my T-1700. Anyone know where I can pick up a maroon colored cover? I thought it would match the decals well. The guy I bought my trailer off of would always throw the spare in the back of his pick-up, so he never had one.

Also, when searching, does anyone know what the correct size cover is for these tires? ST205/75/R14. I don't want to get a "standard" one that is too loose and ends up being baggy.

Thanks!
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Old 08-29-2012, 07:29 PM   #2
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Hi kenm09

I do not know where to get a maroon cover from. However I will pass along some findings I ran into on tire cover colors. The dark colors absorb heat more and the tire behind the cover gets hotter then when using white or lighter reflective covers.

The info the tire engineer posted was that with white covers his tires reached 100F on a hot summer day. He then used a black cover and the tire reached 130F for close to the same day time temps. The extra 30 degrees of heat over long periods of time sitting in the sun accelerates the rubber break down process.

Point he was getting at was, light reflective colors are better than dark absorbing colors when it comes to tire covers.

This point never dawned on me as I always just happen to have the white Adco covers, but it does make sense. Just never knew it was at least 30 degrees worth.

Hope this helps before you search hard and long for a real dark cover and then find this out.

John
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Old 08-29-2012, 08:48 PM   #3
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Quote:
Originally Posted by JohnB View Post
Hi kenm09

I do not know where to get a maroon cover from. However I will pass along some findings I ran into on tire cover colors. The dark colors absorb heat more and the tire behind the cover gets hotter then when using white or lighter reflective covers.

The info the tire engineer posted was that with white covers his tires reached 100F on a hot summer day. He then used a black cover and the tire reached 130F for close to the same day time temps. The extra 30 degrees of heat over long periods of time sitting in the sun accelerates the rubber break down process.

Point he was getting at was, light reflective colors are better than dark absorbing colors when it comes to tire covers.

This point never dawned on me as I always just happen to have the white Adco covers, but it does make sense. Just never knew it was at least 30 degrees worth.

Hope this helps before you search hard and long for a real dark cover and then find this out.

John
Hmm, that's interesting. We have black tire covers on the fifth wheel, mainly because white covers would stand out like a sore thumb with the darker paint job. They are lined with the same white stuff like white covers have, they just have a different exterior. Not that it matters for heat absorption though.
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Old 08-30-2012, 10:36 AM   #4
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Quote:
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Hmm, that's interesting. We have black tire covers on the fifth wheel, mainly because white covers would stand out like a sore thumb with the darker paint job. They are lined with the same white stuff like white covers have, they just have a different exterior. Not that it matters for heat absorption though.
Jon, if you have a surface temperature thermometer, try and reproduce the experiment.

In today’s saga of ST tire failures, our RV tires need all the help they can get. If using a dark cover can add 30 or anything more degrees from sun absorption, this makes some level of sense it can help speed up the breakdown process. Covering all 5 tires or 1 tire with dark covers during times of non use may be like throwing gas on the fire.

I never even thought about this until I ended up with a tire failure and start doing more research and found this.

I do know my tires towing down the road can reach 130 F to 145F on the outside side wall. After this summers failures, I have been measuring them at rest stops. Well if this correlates any, when we have really nasty high heat days, a camper sitting with black tire covers on reaching 130 F not even spinning isn’t great. Towing down the road, the entire tire gets heated, cooked all over. A camper standing still, with a cover on, odds are high the outside of the tire towards the sun is getting hotter then the inside and maybe the tread. So this one is cooked….

I have tires on my tractor that are over 30 years old and do not have much if any weather checking. Yet I can have 4 year old ST trailer tires with cracks in the treads…. And this is on a camper that was stored inside the garage…. The rubber just is not the same in ST tires and anything we can do to not accelerate the breakdown problem is good thing.
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Old 08-30-2012, 10:30 PM   #5
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Good point, John. I don't think we have such a thermometer, but I will see if I can get an idea of the temp. I suppose since it's a dish/dually wheel, I could probably put a wireless thermometer sensor in the dish of the wheel and then cover the tire again.

Not that it matters, but it has 16" Uniroyal Laredo LTs on it, not STs...
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1997 T-2653 Blue Denim, #5471
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Old 09-09-2012, 07:15 AM   #6
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ended up going with a white one. it looks good anyway. thanks for the input!
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Old 09-10-2012, 08:02 AM   #7
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Seems like a tire should ware out before heat has any effect. My T1700 maybe 2500 to 3000# freighted my Tacoma 4000# toss in a 1/2 ton of dirt both of them riding on 4 tires that's twice the weight per tire. I don't get it the trailer tire don't steer or provide traction they just hold the camper up there must be a serious quality issue some where with trailer tires. Granted a bigger trailer carries more weight but the tire size and rating goes up with weight. Mine are rated 1360# each that's over 2,000# more then I could load in my camper with a shovel once it's a ready loaded and that's not including what the truck has to carry. I just don't get it.
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Old 09-10-2012, 07:45 PM   #8
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As John has said before, trailer tires aren't subject to the same laws and rules for manufacture that car/truck tires are. So companies who make them can make them as cheap as they like with no regulation, and unfortunately the good ones are no longer around.
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1997 T-2653 Blue Denim, #5471
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Old 09-11-2012, 06:20 AM   #9
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Well this took awhile but here is a site that nails it. RV Trailer Tires I can see why people get into trouble with trailer tires. There really are are quite a few regulations but cloudy information check this site out if you have tire and rim questions or have had tire issues.
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Old 09-21-2012, 02:13 PM   #10
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Mines appears to be the original and rather sun burned. They have it blocking the rear storage door. Think I'll save some money on a new cover and just toss it in the truck like the OP mentioned. Thanks for making me see something rather obvious.
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