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More tire info...safety warning!
Earlier this year we had an inside dual go flat and didn't know it. The outside tire finally gave up and we were stranded needing two tires. Because of that experience I bought a TPMS so I could keep an eye on the pressures and temperatures.
During our last outing I noticed an inside dual tire going UP in pressure and temperature more than the others. (Starting pressure was 110psi cold)I didn't expect that and didn't know what to do. I stopped once and noticed that the exhaust pipe ran within about 10 inches of the hot tire. After sitting for 30 minutes all pressures and temperatures were the same, time to get back on the road. Thinking this might be normal due to the proximity of the exhaust pipe, I kind of put it out of my head.
Later that day the high pressure alarm for that tire came on. The pressure had risen from a cold reading of 110psi, to a hot reading of 130psi. As I was looking for a place to pull over the tire blew out with a BANG.
The tire was 5 years old and made in the USA. It had plenty of tread left and looked to be in great shape. The blowout was in the side wall on the OUTSIDE of the tire. The motor home was not overloaded.
I had the tire replaced and noticed that the new tire didn't go up in pressure or temperature any more than the others while going down the road, so much for the exhaust pipe theory. I guess the tire just failed somehow.
My point here is that my new TPMS was trying to tell me something, I just didn't know what. I was wondering why they put a high pressure alarm in the system.
Bottom line, This was a real learning experience for me, and thought others may lern from it too.
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twoup1200
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11/30/09 11:38am |
Tech Issues
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RE: P-30 front springs
OK time to put this thread to rest. I checked on Henderson springs, $375, OUCH. Checked with Coil Spring Specialties, $205, much better. The springs arrived about a week ago. I called two RV repair shops this morning. One wanted $400, the other $550. I came back to this thread and saw where Takereasy has posted some pictures and made it seem easy to do it myself.
Well, Takereasy was right. I did both sides in about 4 hours and that's with making a trip to the hardware store to make the super duper ball joint breaking device. Worked like a charm.
With the old springs the rubber bumper pad was about 1/4 inch from the stop. Now I have about 2.5 inches. The coach sits about 3 inches higher in the front. Can't wait to give it a road test.
Thanks to everyone, especially Takereasy.
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twoup1200
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11/13/09 07:03pm |
Tech Issues
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RE: P-30 front springs
Thanks, about a year ago I put in new air bags. As usual I searched this forum for advice. One guy said he just took the springs out rather than try to squeeze the bag out of that little hole and the new ones back in. I actually found the bag replacement easy without removing the spring. My point is that thiat guy made spring removal / installation sound easy. It just doesn't look easy to me.
I do plan on using Henderson springs and doing away with the air bags.
Thanks again.
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twoup1200
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10/18/09 04:12pm |
Tech Issues
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P-30 front springs
I've searched the forum on this topic and got some useful info but I still have a question.
To make a long story short, I need new springs. There is almost no clearance between the rubber bumper and the bump stop.
My question is this. How big a job is it? I like to do as much work myself as possible. I've changed the tranny, exhaust, put in new front air bags, all without too much grief but this looks like a big job.
Have any of you done this yourself? If so, what all is involved?
Thanks in advance
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twoup1200
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10/18/09 01:51pm |
Tech Issues
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RE: Dual blowout
Wow, this thread has taken on a life of its own. I was only after opinions, and I got several. I made the choice to move the new tires to the front, keeping the rotation the same. I'll run the "old" tires another year.
All the opinions expressed helped me in making that decision. Thanks again.
One thing I hadn't considered until now is a pressure monitoring system. It's very possible that the inside tire went flat due to a puncture and the outside tire couldn't handle the load. A monitoring system may have notified me in time to pull over safely and put on the spare.
Thank you all, this is a great forum.
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twoup1200
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05/24/09 07:46pm |
Class A Motorhomes
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RE: Dual blowout
OK,
I took the new tires and had them balanced today. I asked the shop owner whether direction of rotation mattered when rotating RV radials. He said that it no longer matters, it was an issue back in the 70's but no longer.
The other 4 tires are LARAMIE TRAIL BOSS 8R19.5 steel belted radials. They are made in the USA. I store the MH covered, no sun on the tires. I think I'll run them another year or so. There are no visible cracks anywhere.
I'll keep an eye on them,
Thanks for the advice
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twoup1200
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05/23/09 05:46pm |
Class A Motorhomes
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RE: Dual blowout
Thanks for the info. Mr Wizard solved my issue of getting the new tires up front and still keeping the same rotation.
BTW, after the blow out the inside tire was shredded, the outside tire looks like it just popped off the rim, no other visible damage at all. Maybe the inside tire lost pressure and the outside couldn't take the load?
SemperFi Ray
Thanks all.
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twoup1200
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05/22/09 09:40pm |
Class A Motorhomes
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RE: Dual blowout
Thanks Bob. I know that several years ago it became OK to change drection of rotation on car radials. I Didn't know that the RV radials were still directional.
As far as not needing to rotate motor home tires. I have always seen more wear on the inside back tires for some reason. I thought rotating them would help the whole set last longer.
Thanks again
Dave
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twoup1200
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05/22/09 06:30pm |
Class A Motorhomes
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Dual blowout
We just returned from a short trip. On the way out we had both right side rear tires blow. I was at the mercy of the closest tire dealer. He brought out two Goodyear 8R19.5 G647 RSS tires.
Now for my questions. My original tires were dated 12 04 and only had about 10,000 miles on them. Should I consider them "old"?
I recently rotated the tires and paid no attention to the direction of rotation. The tire that shredded came from the front left and was rotated to the rear right inside. Is that a problem?
My plan is to move the new tires from the back right to the front and put the fronts on the back right. Do you think that will be OK?
BTW I inflated all tires to 105psi before we left.
Thanks in advance.
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twoup1200
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05/22/09 06:06pm |
Class A Motorhomes
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