In Norway most tag axles are twin wheels and they call a tag with single wheels a “Poor Mans Tag.” Only they say it in Norwegen of course, that was the translation I got. 
Wheel Nut:
IYou cant run at 44t on 5 axles
I don’t mean to be pedantic 
, but you can. 6x2 unit with 2 trailer axles. The trailer axles must be 1.5 meters apart and on air with a plated bogie weight of 21 tonnes. The unit also needs to be taxed at the 44 tonne-5 axle rate (class d i think) and costs £1850. Blue Circle run some older powder tankers in this configuration,giving them the maximum payload of around + - 32.5 tonnes, but the margin to allow for axle overloads is very narrow. 
why do them 8 axle container things ALWAYS run with 2 or more in the air■■? 
Because you only need 6 axles for 44t. They have the extra axles to split the trailer down to deliver half size boxes.
Coffeeholic:
… “Poor Mans Tag.” Only they say it in Norwegen of course, that was the translation I got.
Would that be ‘puur manz taag’ in the native tongue then?
It could well have been because it all sounded the same to me. 
