Car tyre pressures

ametlla
ametlla Forum Participant Posts: 6
edited March 2014 in Caravans #1

Can anybody out there advise me on the rear tyre pressures, as most caravaners load up there cars with extras, forget about the nose whieght I know all about that, do any of you add a few pounds to the rear tyres more so when traverling long distances say to Spain, I would have thought this a good idea even to save on fuel, I have had 14 motorhomes and the last two Fiats and Fiat states 85 lb all round continental motorhome tyres on the side walls 69 max so it cant hurt car tyres or can it