Tyre pressures

Hi, Ally
I had a similar query several months ago on this this issue. I had got 5 new Michelin Agilis CP (Camping)tyres, (€800) so I queried other owners on the ''Outand aboutwebsite. I also contacted Michelin Tyres and gave them the loaded weight per axel, and lesser semi-loaded weighs. I got a response stating that rear wheels - for fully loaded- should be 80PSI, and front 59PSI. However I stress this is based on Agilis 215/75/R16 Load Rating 113 only, and on the Loaded (weighted figures) been carried. I thought 80 PSI would be very rough ride, but it's not. I also thought that such a difference between front and back PSI was unusual, but some of the experts concurred with Michelin.
Again I stress these figures are for Michelin Agilis CP. I did have copies of the thread, but PC suffered a hiccup about 2 weeks and I lost all info, Word, Excel, hundreds of photos- much remember to copy in future!!
Regards
Frank

I got into this item on another site and was completely baffled, bemused, blown away, by the responses I got. I had a 522 Hymer and on a trip to Yorkshire I was annoyed at the ride of the van. Had taken for granted tyre pressure was ok. Pulled into services and found 80lbs rear and 65lbs front. Now I don't prentend to know much about laden weights......axle bearing weight etc. etc, but having driven mercedes vans with carcass meat and always at 50 to 60 lbs front- back and have a spine still.......I reckon the Hymer with two adults two bikes and half tank of water and full fuel was a tad over inflated.
I put 60 lbs back....55 lbs front and am doing same with a Hymer at 3850kilos. The ride is comfortable and as it's an A class it wallows a bit on a roundabout ......show me an A class that doesn't........even if it has the right tyre pressure !!!!!!.
I did try my van at 75/65 and found the ride unbearable and road noise intrusive.

That's my story......if I'm wrong I stand to be corrected.( have a sneaky feeling this topic will run and run ................

And very good information too

Just curious what other's used, after being told of by Dave about my tyre pressures I was looking at everyones Motorhome Tyres at the weekend


Tyre fetish?

A point I need to make here is there Michelin Agilis CP tyres are specifically made for motorhomes, and the feeling is that the tyres are beneficial in instances where unconscious overload occurs- I am led to believe that Michelin apparently will always give the 80PSI for rear pressures for these tyres, (possibly in belief that most motorhomes are always loaded close/over max axel weight and to CTA) However this is a very technical issue, re safely, ride, and etc, so I want to stress I am just giving the benefit of my previous queries on the specific XP tyres. Perhaps others will find these PSIs give too hard a ride. I have no technical expertise on the issue other than my experience on foot of my concern to ensure my tyres were not under inflated. I am aware other people think there is no need to get CP tyres, but be that as it may, thats what I bought.
Frank

Mine are CP. I stated this earlier, but I note I put XP on my last message.
Frank