Community Forums

eccostar · 10-17-2011, 03:01 PM

I have heard truckers talking about these and they seemto agree they are lighter, get better mileage and fuel ecomony. BUT the say that they are "Flat out Scarey' on wet or icy roads.

Bigd2 · 10-17-2011, 03:18 PM

I agree with everyone else. With duals at least you have a chance to control the coach and limp out of harms way on the remaining single. Not sure, but if you had the single larger tire in place of the duals I would think it would be much harder to control after a blowout. I am not sure of this, but with a single I would think you could say good by to the rim after it tried to pick up the 10 to 12 thousand pounds on that side of the axle. I also think that maybe the opposing front wheel would not be of much value in controlling the coach if the sudden downward pressure from the opposing rear raised it up, or at least caused much of the weight to be removed making it difficult to steer.

Chuck 1935 · 10-17-2011, 08:28 PM

Can you imagine the damage if one of those super singles let go. It would probably clean out everthing up to the ceiling. Also, I like the idea of four sidewalls keeping things stable rather than two.

puttin · 10-17-2011, 08:36 PM

I wonder if there's some sort of "run flat" technology that some singles might have?

GMRHost · 10-17-2011, 09:43 PM

Run-Flat on super singles would defeat their single highest advantage- less weight.
A run-flat with that kind of weight rating would weigh more than a set of duals.

puttin · 10-17-2011, 09:50 PM

Thanks GMRHost...we learn alot here..

GMRHost · 10-17-2011, 09:51 PM

Quote:

Originally Posted by puttin

Thanks GMRHost...we learn alot here..

Me too, every day!

Mr_D · 10-17-2011, 10:09 PM

Quote:

Originally Posted by GaryKD

Hi Mr_D,
The reason they did not go to the super single was a fear about tire distribution. Putting a tire on a coach that is not readily available, if a replacement is needed (for what ever reason) did not seem like a good idea.

Ever try to get a 305/70 tire? I had to wait over a month to get two of them for our front axle. When I did get them they were only about two weeks old! The Singles were readily available from Michelin.

And, for the first time today I saw a truck with them everywhere but the front axle. It was a tanker truck.

Mr_D · 10-17-2011, 10:15 PM

Quote:

Originally Posted by GMRHost

On duals, if you have a flat, you can even "single out" (remove the flat and run to a decent dealer on one tire instead of two) if you're in, say, Rock Springs WY, or worse.

Which of course effectively ruins the tire since it's way overloaded (if it doesn't blow out first). Any tire run 20% low on pressure is considered to have been run flat and if you add 100% more load you have certainly crossed that threshold!

GMRHost · 10-18-2011, 12:03 AM

As I said, it will get you to a dealer, and not sitting on the side of the road, but not hotrodding either... How singling out one tire of four translates to 100% more load, is beyond my limited comprehension, But having had to do it a few times, I never lost the companion tire nor had it deemed unfit.

Midniteoyl · 10-18-2011, 02:38 PM

The tire is designed to stay on the rim in a blow out, and stay under the rim long enough to limp to the side.

The greatest advantage is NOT weight, its rolling resistance.. there are only 2 sidewalls defecting instead of 4. Truckers who have tried them have mixed feelings, but again, the split was about 60/40.. 60% for them. The ride is MUCH better with them. The fuel savings is in the 4%-6% range. The actual flats have been few.. much less than with 'normal' duals. The traction, according to those who actually drove in bad weather with them, is about the same. Hard part being bigger and heavier chains

.

Again, actually research and ask... please.

Midniteoyl · 10-18-2011, 02:45 PM

Quote:

Originally Posted by GMRHost

As I said, it will get you to a dealer, and not sitting on the side of the road, but not hotrodding either... How singling out one tire of four translates to 100% more load, is beyond my limited comprehension, But having had to do it a few times, I never lost the companion tire nor had it deemed unfit.

The load is spread to 2 tires on a specific side.. If you lose one, the other must take up that load.. 50% x 2 = 100%.

That one tire is not there so you can keep going. You are to make it to the side of the road, and/or limp at a very slow speed to a place safe enough to pull over. 45mph is not 'very slow'.. under 10mph is more like it, and only long enough to safely pull off. If the one good tire is driven for any distance at any speed, its considered 'run out' and should be changed. There are many stories of people losing a tire, getting a new one, and then losing the 'good' tire still on that side.

Dadeaux · 10-18-2011, 02:54 PM

Quote:

Originally Posted by Oldrtrcr

Over on the TiffinRVNetwork there is a poster who installed the Michelin Super Singles on his coach back in 2008. He should have a good idea of how they work at this point. His screen name is Historyljc. He is on this board as well

I know Historyljc (Jim) and had the pleasure of having lunch with him this last weekend at the TRVN rally in Pine Mountain. I asked him several questions about the Super Singles and both he and his wife said they would not go back to duals because of the improved riding characteristics and simplicity, no unbalanced tire pressure, only one tire to check and one valve to test pressure etc.

There was another 40 ft coach there with Super Singles and his take was very similar.

slickest1 · 10-18-2011, 04:18 PM

I have driven over 100 miles with one flat on a dual many times with a fully loaded truck. I have also had the other tire blow as well. Depends on the condition of the tire and how hot it is and how fast you go. It's not impossible!