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Old 10-18-2014, 04:20 PM   #21
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Thanks interstate flyer! You mentioned earlier that hub centring rings were not required for the Sendel wheels.

Did the OEM Airstream hub covers and lug nuts work on the new wheels?
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Old 10-18-2014, 04:55 PM   #22
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I believe that the Sendel hub covers are smaller. I paid $35 all around for new lug nuts. The lug nut covers were cracked on about half of the 2 month old oem nuts.
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Old 10-18-2014, 05:29 PM   #23
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Durn! I ordered the Sendel wheels without centre caps. Hope I can find caps locally.
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Old 10-18-2014, 05:55 PM   #24
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The 15 inch Michelins are readily available here. Just received a set from Costco this week.
are you getting p metric ltx's or did you find some actual LT's in 15" which would be awesome?
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Old 10-18-2014, 06:22 PM   #25
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LTX MS2 P235 75R15s


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Old 11-18-2014, 08:49 AM   #26
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This is exactly the info I needed. Going to discount tire to see if they have those in stock near us!

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Old 11-18-2014, 11:23 AM   #27
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I found that while the Michelin LT load range "E"s on upgraded 16" Sendel wheels gave me peace of mind on my 2013 19' Bambi, their harsh ride popped at least 8 rivets at 65-75 psi.
The cause of the rivets popping was most likely unbalanced wheels, which can set up quite a bit of vibration at highway speeds. The solution is Centramatics - see Video-How-Centramatic-Balancers-Work - Centramatic Wheel Balancer, Tire Balancers for DFW Trucks
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Old 11-19-2014, 08:42 PM   #28
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OK, so can I run my new Goodyear Wrangler HT's at the max tire pressure of 65 psi to get the most weight capacity or should I go 85 to 90 % of rated weight capacity


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Old 11-19-2014, 08:49 PM   #29
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OK, so can I run my new Goodyear Wrangler HT's at the max tire pressure of 65 psi to get the most weight capacity or should I go 85 to 90 % of rated weight capacity


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Not only will max air pressure give you the most weight capacity, it will also give you the most stability.
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Old 11-20-2014, 05:30 AM   #30
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OK, so can I run my new Goodyear Wrangler HT's at the max tire pressure of 65 psi to get the most weight capacity or should I go 85 to 90 % of rated weight capacity


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We need a lot more detail to answer that question.

1) Are we talking about your trailer or your tow vehicle?

If the tow vehicle, then you need to find the vehicle tire placard on the driver's door - and if the tire size you are currently using is the same as what is listed there, use that pressure. If a different tire size is being used, then we need to recalculate.

2) If we are talking about your trailer, then tell us more about it. Have you weighed it? Did you change tire size and/or type?

Details, please.
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Old 11-20-2014, 07:19 AM   #31
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We need a lot more detail to answer that question.

1) Are we talking about your trailer or your tow vehicle?

If the tow vehicle, then you need to find the vehicle tire placard on the driver's door - and if the tire size you are currently using is the same as what is listed there, use that pressure. If a different tire size is being used, then we need to recalculate.

2) If we are talking about your trailer, then tell us more about it. Have you weighed it? Did you change tire size and/or type?

Details, please.

I am completing a shell off renovation, the original weight on the 68 single axle Safari is 3420 lbs, for this exercise let's use 3500 lbs. I did change tire size, the new tires are Goodyear Wrangler HT in 215 75 15, these are light truck tires with a "D" load rating.


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Old 11-21-2014, 05:57 AM   #32
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I am completing a shell off renovation, the original weight on the 68 single axle Safari is 3420 lbs, for this exercise let's use 3500 lbs. I did change tire size, the new tires are Goodyear Wrangler HT in 215 75 15, these are light truck tires with a "D" load rating.


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OK, so let's do the math:

First let's clarify the 3500# value as the tire loading, not the GVW. And since it is an axle value, we'll add 10% to account fr side to side loading variation.

So each tire would be carrying 1925#. I think tires shouldn't be loaded more than 85% of their rated capacity - so that means the inflation pressure has to generate at least a 2265# load carrying capacity.

The tire is rated for 2096# at 65 psi, so I think it is running at 92% of its rated capacity.

Personally, I don't like that value, but to answer your question, you need to be running at 65 psi.

And just to check this out: You should run a pressure buildup test when you get the rig running. The test consists of checking the inflation pressure BEFORE you start for the day (65 psi), then check it after an hour of high speed towing. You should get no more than 72 psi. If you get more than that, you either need to slow down, or get a tire with more load carrying capacity. As a followup to be sure you have captured the max pressure buildup, check after a second hour of running.
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Old 11-21-2014, 07:51 AM   #33
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Years ago when my father started Airstreaming, there were no such things as "Trailer Tires", and everyone used 7.00X15 bias ply truck tires. And, although they didn't last too many miles because the tread wore out quickly, it was very rare to have a tire fail.

Now days the tread on radial trailer tires last a long time, if they don't fail first. The major problem is the amount of damage they will do to the trailer when they do fail. I've heard stories of up to $8,000 damage from a radial trailer tire failure.

Sort of a "Damned if you do, damned if you don't" deal. Wish there was a way around it.
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Old 11-21-2014, 09:18 AM   #34
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Capri,
Thank you for response, will have to weigh the trailer as soon as I can to get real weight.

Thanks again.
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Old 11-21-2014, 05:26 PM   #35
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After reading through this (and other) threads, we went ahead and ordered Carlyle ST225/75R15 tires (D load rating) from Discount Tire. Now in the nasty Texas drizzle, my husband has headed over to the Airstream to jack it all up and remove all 4 tires so that they can be taken in for the new ones to be put on. He's a very cautious person, but I'm still praying he doesn't kill himself.
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