If they go flying around then I will be RICH!!! HAHA... wont be traveling much with the bus...have a mini van for travel and that gets MUCH better gas mileage... But yea...I want to be able to move things around (its my M O)... I guess they could be strapped down when moving...thats what I do with stuff in my van... AT any rate... "enjoy the ride"!!
A tire with such an aggressive tread pattern is going to howl pretty loudly at any speed over about 35 MPH. It will also ride a bit rougher than a less aggressive tread pattern. I would also think they would tend to be more expensive than a highway tread pattern would be.
I know that on my buses and on the buses at my church I have the same tires in all positions.
My thinking is the buses are never off pavement. And if they are it is for very short distances on good gravel surfaces. So they won't ever really need extra traction for driving off road or in the mud.
They won't need traction tires if it snows because if it is snowing in town the activities are usually canceled. If the buses should end up going some place where it is slick the chains required sign usually goes up. So they won't ever really need the extra traction an aggressive tread pattern would give on ice or snow.
And lastly, most traction tires do not roll as easily or smoothly as a highway tread will roll and ride. While most conversions won't put on the miles per year a bus in service will put on in one month a 3-5% increase in fuel use can become a huge number even in a small fleet if it does a lot of miles per year.
ive got similar tread on my DEV bus.. and they dont howl on the freeway... they sound about like a semi.. and are definitely nice if up north at all or if you have to park your bus in a grassy area or such ..
I say go for the aggressive rear drives.. i went with uniroyals on mine and are happy with them.
My rear Goodyears make a lil noise but nothing major at all. they have the open shoulder, blocky all terrain type tread design. Not quite as radical looking as these Generals in this thread, but similar. They do GREAT. And I've got sandy roads to drive down a lot AND long flat roads at 65mph every weekend or so.