geofers
Kicking the Tyres
Posts: 11
|
Post by geofers on Jun 1, 2013 15:17:54 GMT
The van went into have a low mileage service last week at a Fiat main dealer. So checked the tyre pressures this morning and found they had inflated the to the commercial van pressures i.e. 80psi rear & 70psi front. If you have camper tyres you will see on the tyre max psi 69. So in this case the rears I was 11psi over maximum? I normally run at 60/65. Worth checking after a service Attachments:motorhome-leaflet.pdf (743.44 KB)
|
|
|
Post by AdminAndy on Jun 1, 2013 15:49:02 GMT
That's an interesting point Geofers. Tyre pressures on motorhomes is a tricky topic because the correct pressures depend to a large extent on the overall weight of the vehicle when it's loaded. So you can have two motorhomes on identical chassis but needing very different tyre pressures. I might have to spend some time investigating this one.
|
|
|
Post by trooper on Jul 16, 2013 9:54:43 GMT
I've just had 4 new MICHELIN - AGILIS CAMPING tyres fitted to our Bus, (2004 -Ducato based Elnagh Clipper) (215/70 15CP) and it says on the side wall Max Pressure 80psi. It also says on my door pillar that the front and rear tyres should be inflated to 5.5b (80psi), however the tyre fitter said he thought 80psi was way to high and filled them to 60psi, I have since increased that to 65psi and I am thinking of going up to 70psi if any motorway driving is envisaged.
|
|
|
Post by RogerThomas on Jul 16, 2013 11:00:34 GMT
|
|
alamanda
Kicking the Tyres
Loving the Winnie :)
Posts: 19
|
Post by alamanda on Jul 17, 2013 22:08:12 GMT
The tyre pressures on the cab placard in my Winnebago are the MINIMUM pressures NOT the recommended pressures. As has already been posted, tyre pressure is dictated by load, there is no such thing as a "one size fits all" tyre pressure.
The correct method is to weigh your loaded motorhome at each corner, then consult the tyre manufactures load index (available on their website) and inflate to their recommendation for the load on the heavier side of the axle. The tyre pressures across an axle must be the same, inflate according to the heavier side. Rims have maximum inflation limits exactly the same as tyres do, be sure you do to exceed the rim limit! Tyre pressure is often overlooked and is absolutely critical for the sake of safety.
Only ever check tyre pressure from cold and always before each trip. Never after even a short trip and never bleed air from a tyre to that has just been run to attain a tyre pressure. Under inflation overheats the sidewalls and is VERY dangerous. Any tyre that has been run under inflated must be de-mounted from the rim and inspected by a professional. If there is any doubt about it, replace it.
|
|
|
Post by trooper on Jul 18, 2013 6:40:33 GMT
The tyre pressures on the cab placard in my Winnebago are the MINIMUM pressures NOT the recommended pressures. As has already been posted, tyre pressure is dictated by load, there is no such thing as a "one size fits all" tyre pressure. The correct method is to weigh your loaded motorhome at each corner, then consult the tyre manufactures load index (available on their website) and inflate to their recommendation for the load on the heavier side of the axle. The tyre pressures across an axle must be the same, inflate according to the heavier side. Rims have maximum inflation limits exactly the same as tyres do, be sure you do to exceed the rim limit! Tyre pressure is often overlooked and is absolutely critical for the sake of safety. Only ever check tyre pressure from cold and always before each trip. Never after even a short trip and never bleed air from a tyre to that has just been run to attain a tyre pressure. Under inflation overheats the sidewalls and is VERY dangerous. Any tyre that has been run under inflated must be de-mounted from the rim and inspected by a professional. If there is any doubt about it, replace it. I've not long found out that Tyre Vales have maximum inflation limits as well, apparently the standard rubber car valve is limited to 60PSI. For pressures above that you should have 'Screw In' valves. I asked the tyre fitter to check mine and he said they were the Screw In type.
|
|