Beware of 'approved' dealership standards.

The tyre pressure issue was just one of a very long list, most of which should have been identified during the pre delivery inspection. I didn't want to list them all as it would have taken far too long. Ultimately we are very pleased with the motorhome but exceedingly disappointed with the company and their customer service.

Not good to hear you had issues, and hope everyhting gets sorted out for you. What I think people need to remember that not every sale is like this and not to be put off certain places.

Personally I bought my motorhome from Marquis Durham last year and the service during the sale process and the after sale service has been exceptional. The MH was perfect when collected, there was even a small amount of some substance on it found after the handover before i drove off and they had the valets out to get it cleaned before i drove away.

Being a complete novice i was not sure on a couple things whilst i was on a site called them and they were more than happy to assist and talk me through my queries.

Again not taking anything away from from your issue, but feel it should be said so as not to put people off certain places.

We bought one of our Motor Caravans from Marquis and I think as you are finding a "pre delivery" inspection was skimped to say the least ,I think it is in their case of if anything is wrong the customer will bring it back, then we can get more money from the makers for "warranty" work,

ps the same can be said for some other companies also 

The Michelin Agilis Camper tyre will not wear excessively at 80psi if my current experience of the tyres are common; 22,000 miles with less than 3mm reduction in tread depth on the rear, the fronts which I run lower and are the driving wheels have worn by 5mm. Ideally, the manufacturers and dealer will give proper advice but in reality they give advice that avoids a potential compensation claim [assuming they do know what they are doing!]. Motorhomers tend to explore the built in tolerances. If in doubt, follow the manufacturers tyre pressures or those provided by the tyre manufacturer.

As for pdis, my dealer told them they do not do them other than a quick check that anyone would do before going on a journey. The manufacturer does the pdi when it leaves the factory. Hah, I thought. Yet there were no faults on delivery of my current van.

This is a post on another forum of a reply from Continental Tyres.

The rear and front axle weights are of a Motorhome of a Forum Member -

Rear axle 1900kg (max 2000)
Front axle 1540kg (max 1850)
Gross 3440 kg (max 3500)

The following is the reply from Craig, the Product Support Engineer of Continental Automobil. He has consented to having his reply published:

The pressures you require are as follows:

Front: 3.25bar - 47psi pressure applicable to a maximum permissible load of1590kg. 1850kg Max loading at 4bar - 58psi (1875kg maximum at this pressure)

Rear: 4.25bar - 61psi pressure applicable to a maximum permissible load of1970kg. 2000kg Max loading at 4.5bar - 65psi (2060kg maximum at this pressure)

As a general rule for pressures on this tyre, every 100kg added from the base figure of 1490kg at 3bar (43.5psi) will require an increase of 0.25bar(3.6psi) in pressure up to a maximum of 2060kg at 4.5bar (65psi)

We do get a substantial amount of queries regarding pressures. Unfortunately, there is a distinct lack of understanding on the subject which isn't helped by the apparent reluctance of coach-builders to specify the pressures required. Naturally, all pressures are dependent on load so providing any queries received contain the information requested, we can advise accordingly. I've helped a few other organisers of motorhome/camping clubs and associations in the past so we are all working to educating the consumers as to what is required. Hopefully this will provide a greater understanding for them.

I really don't understand this tyre pressure thing. Is it not mandatory to have the   tyre pressure showing somewhere on the vehicle, ie the door pillar. Also can you not be fined for having incorrect tyre pressures.

davetommo, Motorhomes will have tyre pressures quoted, usually for maximum loads. The base vehicle manufacturer may also quote tyre pressures if the the van is designed for commercial purposes. The problem for some motorhomes, including me with my current van, is that the tyre pressures quoted give too firm a ride so we ask the tyre manufacturer what is a safe and comfortable pressure for our axle weights.

I don't know whether you can be fined over tyre pressures, but it can be an issue if it is deemed the vehicle is not in a roadworthy condition. Hence the development of tyre pressure monitoring systems which I think are now required in all new commercial vans.

And if the vehicle is not in a roadworthy condition you can be fined and collect penalty points.

Interesting when I picked up mine I came away with a wiper blade missing,  no spare wheel and the wrong registration plates on it and as I later discovered a non functioning solar panel. Which after 4 months they still haven't fixed because they don't understand the technology 

The problem is that there is no clear definition of what constitutes as an incorrectly inflated tyre