the GT weights on a peugeot 406 will not be enough to tow a sierra and a suitable trailer for that vehicle - trust me.

and do not be confused with land/range rover, if you look at the classification for these vehicles they are classes as 'dual purpose' and are the only vehicles that can tow more than there own weight legally, no other vehicles (cars or light comms) can do that.

so like i said, (and thanks for the quote) after 1997 no trailor allowance till you have passed your test WITH TRAILER.