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Old 03-06-2015, 02:41 PM   #1
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1999 34' Excella
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Tires - two different types on the same trailer

I bought my 34' trailer about 1.5 years ago, from a long time Airstream user. Before I purchase it, he told me he had just replaced two tires and showed me the invoice for those tires. I missed that the two newer tires were radial and the other four are bias ply. I discovered this today. At least they are all the same size. I've been towing like this for the last 16 month. I'm not sure how far the prior owner towed in the 5-6 months he used them, but I guess there is somewhere around 2,000 miles on the two new tires.

The 2 newer radial tires are ~24 months old. The 4 others and the spare are bias ply tires ~3 years old. I will be putting the 34' in storage for 6 months in a few weeks and have no plans to tow it more than a few miles until next fall. So I'm in no hurry to make a decision right now to change anything.

It will be next fall when I go south for the winter that I might tow a substantial distance. Am I asking for trouble to leave them as they are, or should I replace them before towing any long distance?

What say ye?

2014 Silverado 1500 Crew Cab 5.3L maximum trailering package (yes, I'm towing the 34')
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Old 03-06-2015, 02:47 PM   #2
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What you have works.

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Old 03-06-2015, 02:49 PM   #3
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I would leave them like they are while in storage, then look at replace the entire set.
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Old 03-06-2015, 03:06 PM   #4
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Why replace perfectly good tires if they are in good condition, wearing evenly and give a good ride?

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Old 03-06-2015, 03:07 PM   #5
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Exactly. I assume the similar tires are on the same axle-not that it really matters as the wheels turn independently. On a TV it could be another story.

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Old 03-06-2015, 03:52 PM   #6
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Radials are on the front axle, the bias ply on the center and rear axles. Since the radial flex more than bias ply when at the same inflation pressure, are the bias ply tires sometimes taking more load than the radials? That is my main concern.

If the tires wear unevenly, I really do not care. I will replace all the tires before the tread is half gone, due to age. Though, I'm wondering what pattern to use when I do rotate them.
2014 Silverado 1500 Crew Cab 5.3L maximum trailering package (yes, I'm towing the 34')
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Old 03-06-2015, 05:21 PM   #7
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Unless you are towing 10,000 miles or more a year. I would not bother with rotating. The tires have a 5-7 year life span do to deterioration from the weather and sun. I doubt you will wear out the tread.

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Old 03-06-2015, 05:42 PM   #8
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I would not mix radial with bias on the same vehicle (car, truck or trailer). The lateral stiffness difference will result is some tires being overloaded in that direction. Also braking force is probably quite different so in emergency hard stop not sure what will happen.

I am surprised any reputable tire dealer would have mixed radials and bias on the same vehicle for liability reasons.
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Old 03-06-2015, 06:16 PM   #9
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I agree with Tireman. Mixing radials with bias ply is not recommended. That's probably why the peeps that mounted your tires put the radials up front & in the "lead". Best of what you got moving forward. All others, "fall in".

Seeing as how you're about to put her up on blocks for 6 months, I would keep the $ in me pocket and keep an eye out for a good deal on 6 new ones. You have plenty of shopping time. As you are planning to be traveling extensively in the fall, start out on the right foot with a fresh set of tires and be done with it.
Nuttin like a good piece of mind when you're travellin down the road.
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Old 03-07-2015, 10:05 AM   #10
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Run 'em till they wear out-
If you didn't notice in 16 months of towing, it must be alright.
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Old 03-07-2015, 11:26 AM   #11
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They are perfectly safe and as you have already found out it trails and tows just fine . Simply smile and don't worry about it .
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Old 03-07-2015, 12:29 PM   #12
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Run them until they are worn out or get too old.....

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