Yes I realise that the subject of wheel bolt torques has been raised already in the distant past but from a recent experience I feel it might be worth raising the topic once again.
During preparations for the return leg of our recent holiday (the outward leg being approx 1120km) I rechecked the wheel bolt torques of both car and caravan which for me is standard practice. Whilst doing this I discovered that on one wheel two bolts on the caravan had worked themselves free - although still in situ - whilst on the other wheel, one bolt had worked itself free. I think it a fair assumption to make that one or all of these bolts would have been lost during the return journey had they not been refastened and torqued up again.
For those who for one reason or another either opt out of torquing their caravan wheel bolts, or overlooking the matter prior to undertaking a journey, might want to give this question a rethink.