Super singles on the rear anyone here do that yet ?

[Gerry4104]

I have SS's on my Pete and like em alot, short trip truck so i cant vouche for the fuel savings they are supposed to deliver, but the ride is definately better than duals..

Curious if any of you have tried them on the coach yet...

TIA  Gerry

[buswarrior]

No busnut has admitted it yet.

We all seem to be biased, cuz it took so long for someone to make a single heavy enough, we all got hooked on duals.

And now we are suspicious of a single.

The only reason we ganged up duals was to carry more weight than a single could carry.

You don't think there were folks who didn't believe in duals way back when?

You found the other similar post at BNO.

Orleans in Quebec is running them on line haul service on new Prevosts.

happy coaching!
buswarrior

[Gary '79 5C]

Anything to the center of load is slightly offset causing wheel bearing premature failure?

[Gary '79 5C]

Anything to the center of load is slightly offset causing wheel bearing premature failure?

[luvrbus]

Couple of Eagle guys are running super singles Rusty plans on using the SS on his Eagle bus when he gets finished with it ,offsetting the wheel doesn't cause bearing problems your standard wheels can be bought in different offsets

[robertglines1]

I really thought hard about it. The flat problem was major factor and availability of large size super single required to get roll our size for bus. Most semi use smaller circumference super singles.  Just my thoughts.   Bob

[robertglines1]

Prevost in NJ is outfitting entertainer coaches with them. Check with them.

[TomC]

Here are some facts about the high speed super singles that replace duals.
-445/50R-22.5 is the same as a 295/75R-22.5 or 275/80R-22.5.
-455/55R-22.5 is the same as the 11R-22.5.  The 455's can carry up to 22,000lbs per axle-which can be a problem if you're over that, and most bus drive axles are 23,000lbs.
-Both sizes are rated to 75mph.  On a fleet I know that changed over-their flat rate went down to 15% compared to duals since the super singles are 20ply rated compared to most duals that are 14ply rated.
-They cost virtually twice what a dual costs, they ride better, are rated for single drive axles AND front axle use.
-Freightliner will not install super singles on a normal dual axle with 2" outset rims anymore because of outer axle bearing failures.  Instead we now have an intermediate width axle that we can use a 0" offset rim.  If you install duals on the wider axle, the tires would be just under 102" wide.
-The best tread pattern-whether it be duals or super singles are the Michelin XDN2's-are also the most expensive (of course).

If I had a Crown or Gillig tandem rear ended bus, I would run the super singles.  I would run super singles on my truck except for the fact that my tires are 11R-24.5-of which they don't make high speed singles in that size-they make construction super singles with a top speed rating of 68mph.  Good Luck, TomC

[CrabbyMilton]

I don't think I have seen those on a bus yet at least not around here. I see many trucks on the road with them however. To me it makes more sense to just stick with duals in the case with operators that handle their own tire detail that way the tires are all the same. Indeed, if you get a flat with a dual, you could nurse it very slowly to some place(I think).

[rdbishop]

There are some used ones on E-bay

[TomC]

Everyone with an air brake equipped vehicle should have a 50ft hose with tire chuck on one end and quick release on the other.  Then you can air up your tires your self (and use much dryer air [if you have an air water separator]) anywhere.  Many times a low tire can be brought back up to pressure (especially if you have a wireless tire monitoring system-like Pressure Pro) to get you to a tire shop well before the tire blows.  Low tire pressure accounts for about 90% of all tire failures.  Get a nail, tire goes soft, heats up and blows.  With a system like Pressure Pro, you can eliminate that problem.  Tires seldom blow up on their own with proper air pressure in them.  Good Luck, TomC

[RJ]

Tom -

If I had a Crown or Gillig tandem rear ended bus, I would run the super singles.

You mean like this Crown?

[TomC]

Those are construction super singles-of which are rated to 65 mph.  They could be either a 385/65R-22.5 or 425/65R-22.5 or the huge 445/65R-22.5.  These look like the 425's.  The tires most are talking about are the direct replacements for duals started by Michelin with the X-One line. 

But yes, that's what I'm talking about.  And notice he has the same big tire in front to. Good Luck, TomC

[TomC]

Also-looking at the close up of the tires-they look like retreats.  And notice both tires have a gouge mark about 2" in from the oversized tires hitting the length wise support angle iron above.  Good Luck, TomC