Silver_Surfer:
I went under a 4.2 with a 4.2 trailer in London this week & non working air sus control, squeaky bum time.
Not exactly a real problem as the 4.2 quoted is the safe height for getting under it. 
schrodingers cat:
Silver_Surfer:
I went under a 4.2 with a 4.2 trailer in London this week & non working air sus control, squeaky bum time.Not exactly a real problem as the 4.2 quoted is the safe height for getting under it.
Maybe so but Iām a born worrier!