Single, Duals, or Floater for Tag Axle

I don't have a preference. The truck I run now has duals. My last truck had a 385 single and Ive run ones with a 315 single. I don't notice a difference between them. Everyone in NY will soon have single because they are requiring all lift axles to have a "steerable" or axle that that tracks with the truck when turning and duals don't work with that.

The different setups usually come down to weight. A larger single can be for a 20k lb axle where a 315 would be on a 18k lb. Duals are good for 20k also.

 

guessing due to being in the tanker/dump forum were talking pushers for bridge not for permitted loads. witch in that case single's with a steerable is the best choice. in my oppion

 

Years ago (70's, early 80's) I pulled a 28 ft. dump trailer, and the tag axle ran car tires with an air lift. Seems in Wis. there was a loop hole in the law, that required a tag axle to haul 75,500lbs gross( 72,500 without) but they never said what kind of tires or brakes were needed. Everybody picked on me, calling them "training wheels". ILL didn't recognize that axle, so still had to haul 72500lbs. when I went to ILL. and they'd hang low, at the toll booths(paid by # of axles), sometimes I had to get out and spin them so the toll operator knew they weren't touching. Later, Wis. changed the law, requiring the tire had be full size and have it's own brake.

 

I believe the floats ride the best , the tri axle roll off I drive has 425s on the front and the tag and it's like driving my couch down the road, in ma were allowed 77,000 with a 6% grace if we don't have a scale ticket,