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Old 09-29-2011, 01:26 PM   #1
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Bias vs Radial

So does it matter if your tires are radial or bias ply. Cooper makes a Solid Track Bias ply tire and I was wondering if that would be a good tire for my 31ft Excella II? It seems there are the Chinese made Dynatrail tires and the Good year Marathons both of which are radial and I don't know where the Cooper's are made.

Perry
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Old 09-29-2011, 01:34 PM   #2
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In this day and age, bias ply trailer tires are a low cost alternative used primarily for low-value trailers hauling low-value cargo at reduced speeds, where tire failure is relatively inconsequential.

They're fine for agricultural equipment, for example.
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Old 09-29-2011, 01:49 PM   #3
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My 70's era alloy wheels apparently require tubes as they do not accept valve stems. I'm currently running with radial tires and tubes. The problem with that is that radial and bias are shaped differently and tubes do not conform well to the radial shape. The short version of this is I'm at risk of overheading the the tube/tire combination. 5 extra psi reduces sidewall flex and in my case the temp... My other options are to use bias tires with my factory wheels or get rid of the factory wheels so I can use radials.
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Old 09-29-2011, 01:50 PM   #4
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We had a 65 Tradewind before we got our Excella. We put new wheels on it and also some bias-ply tires on, although I don't remember the brand. We never had any problems with them at all, in fact it towed very well!!!
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Old 09-29-2011, 04:45 PM   #5
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I've been running bias plys for many years for many miles and never a problem on any Airstream. The box trailer I use for my business has had the Goodyear radials and I've had two blow outs.

I personally like the "Power King" (Lite Truck) bias plys, they have a better speed rating, no sidewall flex and make the trailer set high like it did originally.

I'll never run anything other than a 7.00x15 on my vintage rigs and since I have seven Airstreams, that's a bunch of rubber!
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Old 09-29-2011, 07:13 PM   #6
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I researched this a while back and found that Radials run cooler, have more contact on the road, wear better and some say you get better gas mileage. But when they blow they can beat the hell out of your trailer.

Bias tires have stronger side walls, and maybe handle better off road, but they don't tend to fly apart and damage your trailer as easily as radials.

Radials sound better but I'll stick with bias ply, the trailer is aluminum and the wheel wells are plastic.
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Old 09-29-2011, 09:38 PM   #7
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Does tread wear matter when most tires dry rot way before running out of tread? I mean the average car miliage is 10K a year so a trailer going to be less than 1000 miles in a year and they will dry rot in less than 10 yrs.

Perry
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Old 09-29-2011, 11:01 PM   #8
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Perry,

Consider, you wouldn't be buying a 40 year old bias tire. There have been many improvements over the years.

Iv'e been considering the same change over recently. Nothing wrong with a quality LT bias ply.

We've had an old Ford in the Family for 58 yrs, been biased since new..

Bob
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Old 09-30-2011, 07:50 AM   #9
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I had two tire failures last wekend. One was a tread separation and the other was a blowout. Took out my wheel wells, about a 3X2 piece of floor, water pipes, stripped tank valves of the tanks and tore up wiring. Both failure were in the same wheel position-left rear and on different days. I will be replacing all four with 7.00-15 bias ply tires. I'm done with radials on my trialers.
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Old 09-30-2011, 08:44 PM   #10
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So what brand of radials were you running? Maybe I should get bias ply tires. I have had flats before but never have I had a tire come apart.

Perry

Quote:
Originally Posted by bwoodtx View Post
I had two tire failures last wekend. One was a tread separation and the other was a blowout. Took out my wheel wells, about a 3X2 piece of floor, water pipes, stripped tank valves of the tanks and tore up wiring. Both failure were in the same wheel position-left rear and on different days. I will be replacing all four with 7.00-15 bias ply tires. I'm done with radials on my trialers.
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Old 11-21-2011, 07:21 AM   #11
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Cooper tires are made in Ohio. Yes, tire made in the USA!!
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Old 11-21-2011, 08:32 AM   #12
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Do bias tires require to be run with an tire tube?
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Old 11-21-2011, 08:42 AM   #13
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Do bias tires require to be run with an tire tube?

No...these are new tubeless bias Firestone's on original 53 Ford rims.

Bob
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Old 11-21-2011, 12:08 PM   #14
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I have a friend in our unit that won't run anything on his trailer but bias ply tires. He says when the radial tires come apart, and it's just a matter of when, not if, the steel belts that come off do all the damage to the trailer. The bias ply tires don't have the belts to tear everything apart when/if they fail.

It makes sence to me, but I've not changed, yet.
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