Indeed enough is enough! My questions was legitimate and as everything to do with safety.being as on here people use a so called formula to try to give advice on the right psi to inflate a tyre to, to support any given weight of any vehicle.. Car or caravan.. Moderator please read my ooriginal post. Did anyone actually answer the specifics I asked. Answer no. Did anyone then take offence? Yes. Gafferbill did.! and you delete my post. So anybody here wiser, err yes me. Nobody seems to know the answer to a legitimate safety question, although some thought they did and took offence. Mustt be me why answer a question that is asked when you don't know the answer and then take offence to it! Well I actually feel justified and no doubt this post will be removed. I feel justified because the prof, as yet hasn't replied, with a link to the fact the formula everybody seems to repeatedly use, is indeed correct. So the question was a good one regardless of anybody thoughts....