Roymondo:
Bking:
Ok will measure one on Sunday night.What was the result of your tape-measure exercise?
And indeed the point. 
Bking:
So a tractor is half the length of a 13 mtr trailer?Pull the other one eh!
That would be “interesting” to drive
A sleeper cab is over 6’ front to back and there’s at least double that behind the cab, most of it’s under the front of your trailer. 6m is only a bit more than 6 yards which is 3 x 6 feet. So I don’t think 6.24m is anything out of the ordinary, you may be mistaken Bking. 