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Old 02-19-2015, 02:30 PM   #1
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1972 31' Sovereign
Hauula , Hawaii
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'72 Sovereign wheels/tires?

My apologies in advance if I haven't searched deep enough yet! This forum is incredible.

My just-inherited 72 Sovereign is in lovely shape (but needs a good cleaning). Original owner, meticulous maintenance, and it's all original. I like that.

It still has those great hubcaps, and I would like to keep it original.

But the trailer is thousands of miles away, and I can't inspect them. What is the original tire/wheel size? Is there a compelling reason to change the size/specs?

I want to have new tires ready to go when we get there this summer.

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Old 02-20-2015, 06:16 AM   #2
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I suggest you have someone read the tire size out to you. If is likely in the form: 7.00-15

That is a number with 2 numbers after the decimal point (sort of the section width in inches, with the aspect ratio encoded in the way that number is written) followed by a dash (for bias) or an R (for radial) followed by a number that indicates the nominal rim diameter in inches.

Also, there should be something on the tire's sidewall about "Load Range", which come in letters, or "Ply Rating" (PR) which come in even numbers. That is also important.

Post back when you get that as it just might be you'll need to obtain more modern tires - and the sizing system is different.

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Old 02-20-2015, 06:43 AM   #3
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1962 19' Globetrotter
1951 21' Flying Cloud
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My 1972 Owner's Manual shows 7.00-15 6PR for the dual axle trailers.

Work is never done, so take time to play!
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Old 02-20-2015, 07:52 AM   #4
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I used these with great results.
The higher your expectations the fewer your options.
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Old 02-23-2015, 10:20 AM   #5
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1972 31' Sovereign
Hauula , Hawaii
Join Date: Nov 2014
Posts: 51
Thanks much for the advice and info--I can now source the tires and have them ready when we arrive. The Airstream is away from helpful eyes and hands, so identifying anything is not really possible for now. That said, I'm really excited about this project. I got a good look through it before we knew it would be ours: my wife spent happy times in her teens on trips throughout the South.

One regret is that it has an equalizing hitch, but I only glimpsed it, so have no clue what brand it is. Hoping to get some eyeballs on it!
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Old 02-23-2015, 10:45 AM   #6
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1976 31' Sovereign
Oswego , Illinois
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Hardly any one use bias ply tires now on AS, even older when tire replacement. Radial gives better ride. I would stick with 15" tires on AS, as I think much hype about 16" & with issues as clearance etc. plus exp. to pur. 16" new wheels & tires that can get costly. Eq. of 6.00 /15 size is 225/75R15

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