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What are the chances you know pusher/tag wheels/tires? AND eLearning/Guru?

I'm not sure how DOT in the 4 states that require the 10% ground loading differential for permitted loads interpret weight per axle, given what appears to be a 13.5K steerable pusher and tridrive. 



There is at least one state (maybe more) that has an 18” overall tire patch width requirement to achieve 20K on the pusher. 425/25.4 = 16.73”. 445/25.4 = 17.52”. If operating in a state (4 that I’m aware of) that requires the pusher to be within 10% ground load of the drives on heavies, you best take this into account. The 445 requires a 13” wide wheel, so which offset? Alcoa offers a 3.5”, and 6.42”. The 6.42” would align better with the drives. 3.5" would place the outside tire bulge over 102". DOT could take exception. 


Also know state requirements for locating the lift axle regulator. The lift axle controls shall be located outside the cab and inaccessible to the driver while driving. (I’ve always considered this pertains to the regulator, not the raise/lower switch) DOT can see if the axle is raised. There is at least one state that requires the switch to be outside the cab.


 (State regulation) Super single tires of a minimum size of 18” - 19.5” are an acceptable substitute for dual tires. The metric equivalent cross section width of 445mm is also acceptable. Tires marked by the manufacturer with a 17.5” cross section width will be treated as 18” tires.


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