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Would love to haul a grader/scraper. Wonder how long are those? Is 42' deck long enough for them?
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We pulled a motor grader...Champion I think it was a few years back. For some reason I can't find the file on it, but I want to say we put it on a 48' tandem combo step with a 10'-1" spread. It was under 50,000 lbs.
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I told him I got low profile 295 on my truck, shouldn't I have the same tires (at least) on the trailer to make everything horizontal
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the rim diameter is matched to the trailer drop. The smaller the tires, the bigger the drop. The trailer is horizontal.
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The Transcraft guy I talked to today said "we always recommend 22.5 tires because 17.5' will spin 10 times faster and lasts 1/2 of the regular 22.5.
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I don't think the 17.5" rims spin 10 x faster than 22.5's. That's a slight exaggeration. The tire size should be ~245/75R 17.5, which has a circumference of ~100". By comparison, a 255/70R22.5 will have a circumference of ~114". According to my calcs, the small tires would spin 14% faster.
Take a look in the Truck Paper, Truck and Trailer and Truck Trader. How many small rim small rim combo steps do you see for sale? Not many. I have offered to buy several of them from different people and the answer is always the same; "No way, I wish I had more."
The bigger issue to me...and it is a big one, is braking. Those small drums and shoes are bound to fade alot more than the big ones. I *think* a tridem would be a big advantage in the braking department.
Also of concern, primarily with heavier loads in hot conditions might be blowouts. Those small tires aren't as likely to take the heat as well.
Finally, I was talking to a driver who pulled a 17.5" tandem on a regular basis about this and he'd had no problems with blowouts or brake fade. He *did* however, have an issue with parts availability. He once had to layover 3 days waiting for shoes or drums or something like that.
With all of the above in mind, I opted for the best compromise I could find, which was a 2008 Wilson CFD900 Road Brute with a 27" drop and 22.5" rims.
Click here
RoadBrute Photo Gallery CFD-900 with Lowered Deck.
I love this trailer. I spec'd it new. It is a 11' + 42' = 53', with a 24" kingpin setback and 41' from KP to center of tandems. It weighs 10,700 lbs + tool boxes. No sliding axles because I don't run out west so it's just a waste of weight and money. It has been a money maker, but I am always looking for more (sigh). There have been a few loads that I have missed because the loads required a full 42' of 36" deck height, and alas, my wheel wells get in the way.
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Plus they cost more initially.."
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Wilson didn't quote me any more for smaller tires.
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What tire size would you use and what drop would you prefer to see on your new 53' tandem, if you were buying one today?
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For me, it would be a 17.5" rim. But only because I already have that Wilson with the wheel wells.