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Old 02-20-2015, 08:00 PM   #43
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Looks like the longer ones suffer the most damage. Like to hear more about what happened to shorter ones ..<33 ft.
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Old 02-21-2015, 08:45 AM   #44
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Originally Posted by wallacerm View Post
Is this really true? "Vast majority" seems a bit overblown. It is certainly true that the ones that totally destroy the coach are dramatic, but does this really constitute a vast majority? I would be interested in some actual data on this, especially at what speeds the total destruction tends to occur.
Also, some actual data on tire age and mileage at time of blowout would be very useful. Stories in previous posts indicate blowouts happened with tires > 5 years old.
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Old 02-21-2015, 09:15 AM   #45
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It is not traction but drag that causes the problems,, The blow out (if on the front) will drag the wheel back since it is harder to turn, that drags the rig in that direction.

Applying power tends to straighten the rig out, helping you to regain control.

On the rear, a single blow out will not to that as bad
A double blow out (both duals) will.

Same thing. it's like appling a one wheel brake, tends to turn you in that direction, big time.
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Old 02-21-2015, 10:00 AM   #46
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Had my second Michelin XRV zipper blow out on right front at 60 MPH.
Tire was 6 years 1 month old. First zipper was at 4 Years.
I had Safety-T-Steer on MH and did the Michelin hit the gas at blow out sound.
Went straight in my lane with no problem.

Now have Good Year G670's 9 years and 10 months old without any blow outs.
Will replace them in 3 more months.
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Old 02-23-2015, 11:18 AM   #47
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Originally Posted by wa8yxm View Post
It is not traction but drag that causes the problems,, The blow out (if on the front) will drag the wheel back since it is harder to turn, that drags the rig in that direction.

Applying power tends to straighten the rig out, helping you to regain control.

On the rear, a single blow out will not to that as bad
A double blow out (both duals) will.

Same thing. it's like appling a one wheel brake, tends to turn you in that direction, big time.
I hear what you are saying but I just can't wrap my arms around a flat flimsy tire having more 'drag' to over ride a fully inflated tire. I would think that the fully inflated tire would be less prone to being dragged around by the flat tire. Now if you were going around a turn, I could see that losing 50% of your steering tires, could make it really hard to hold the road but I just don't see it on a straight road....
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Old 02-23-2015, 11:37 AM   #48
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Have you ever had a front tire blowout on your DP?

Try rolling resistance instead of "drag". When resistance increases it looses momentum on that side and the other side has more momentum so the good side tries to pass the bad side.
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Old 02-23-2015, 01:48 PM   #49
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And the blown tire is now smaller, making it pull, until it gains speed.
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Old 02-23-2015, 02:09 PM   #50
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I hear what you are saying but I just can't wrap my arms around a flat flimsy tire having more 'drag' to over ride a fully inflated tire. I would think that the fully inflated tire would be less prone to being dragged around by the flat tire. Now if you were going around a turn, I could see that losing 50% of your steering tires, could make it really hard to hold the road but I just don't see it on a straight road....
The fully inflated tire is very hard while the blown tire is very soft, plus you've lost several inches of height which has the whole thing leaning towards the blown tire further enhancing the pull. Then once you hit the brakes the brakes have far more leverage over the short wheel tire assembly which is why we say let it coast for the most part and apply the brakes slowly.
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Old 02-23-2015, 02:34 PM   #51
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Try rolling resistance instead of "drag". When resistance increases it looses momentum on that side and the other side has more momentum so the good side tries to pass the bad side.
Exactly! Here's an easy way to experience the increased rolling resistance of a flat/nearly flat tire. Ride your bicycle with normally inflated tires. Then let at least half the air out of just the rear tire and ride it again (you need the front to safely steer). You will find it much harder to peddle and maintain the same speed as before. Firm tires roll much easier than seriously soft/flat ones

I suspect we don't hear about most rv blowouts, but we do hear about many/most that do result in a serious accident/totaled RV. A front blowout can be dangerous and frightening, but I believe the extent of damage is most dependent upon the skills and response/reaction of the driver. RV size, age, length, etc is all secondary.
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