Note that the recommendation is not to go more than 85% of the max rated vehicle towing weight. I believe that it's also true to say that it's an offence to tow an unloaded/lightly loaded trailer that can be loaded in excess of your licence class, even if in its unloaded state it's lighter than your limit. Also, for 'older' drivers with pre 97 licences, if you still have your old green paper licence and are coming up to applying for your new licence at 70, you will lose many of your previous vehicle classes, including some of the heavier classifications. To avoid this, apply for and obtain a new photo licence now, before reapplying again at 70 so that most classes will be carried forward after your 70th birthday. Otherwise you'll have to take a test or be restricted as though you passed your test after 1st Jan '97. If you want to drive a 7.5 tonne horse box you still need to reapply and pass a medical. Paul