tire pressure advice please.

[justdoitviv]

When I got my van 8/9 years ago, I was told the tires should be at 40. And that's what I have always put in. Having a flat tire, the rac put on my spare. I asked him if its pumped to 40. He said 60 the min unloaded. When I went to get two new tires fitted the next day, I asked the tire fitters, about the air pressure..... and they said 55 to 60. So they had to pump up the other two tires to match. When I had a service done two days later, I asked the garage..... they looked at the metal plate on the drivers door and it said 43. I asked is that as a van or campervan. He said campervan.

tires are 15 inch commercial I think. Its a fiat ducato, mwb.
Many thanks

 

[martinr]

I put 60 in front and 65 in back i have a fiat ducato 2.8jtd

 

[Deleted member 5816]

Viv....... you can look up your own tyres and weights at Tyresave.org but it's best to have the van weighed on a weighbridge front axle weight rear axle weight then total weight the van must be as you go on holiday full fresh water and fuel plus the driver then email a tyre manufacturer for their tyre pressures otherwise follow t h e label on the van door pillar

Alf

When I got my van 8/9 years ago, I was told the tires should be at 40. And that's what I have always put in. Having a flat tire, the rac put on my spare. I asked him if its pumped to 40. He said 60 the min unloaded. When I went to get two new tires fitted the next day, I asked the tire fitters, about the air pressure..... and they said 55 to 60. So they had to pump up the other two tires to match. When I had a service done two days later, I asked the garage..... they looked at the metal plate on the drivers door and it said 43. I asked is that as a van or campervan. He said campervan.

tires are 15 inch commercial I think. Its a fiat ducato, mwb.
Many thanks

 

[Deleted member 5816]

Viv....... you can look up your own tyres and weights at Tyresave.org but it's best to have the van weighed on a weighbridge front axle weight rear axle weight then total weight the van must be as you go on holiday full fresh water and fuel plus the driver then email a tyre manufacturer for their tyre pressures otherwise follow t h e label on the van door pillar

www.tyresafe.org - Tyre Safety Information - TyreSafe
Alf

When I got my van 8/9 years ago, I was told the tires should be at 40. And that's what I have always put in. Having a flat tire, the rac put on my spare. I asked him if its pumped to 40. He said 60 the min unloaded. When I went to get two new tires fitted the next day, I asked the tire fitters, about the air pressure..... and they said 55 to 60. So they had to pump up the other two tires to match. When I had a service done two days later, I asked the garage..... they looked at the metal plate on the drivers door and it said 43. I asked is that as a van or campervan. He said campervan.

tires are 15 inch commercial I think. Its a fiat ducato, mwb.
Many thanks

 

[GWAYGWAY]

All the troubles I have had has been with tyre extensions breaking or as last week getting free and hitting the road between the tyres and wearing the valve off another flat, do'nt you just love it . At least with twin wheels there is the safety of the other one until it overheats and bursts. I try and keep my tyres at 50 for the rear pairs and 60 on the front. This is for a 4 ton Transit, and is what the plate shows.

 

[Steve121]

Once you've got your axle weights, you can use this calculator to find the correct pressures.

 

[maingate]

From the look of your van, I think 43 psi is not too far out.

Set them to 50 (as your normal weight will be near the max for a van conversion), see how it goes at that. You can always reduce them a few lbs at a time if you think the ride is too hard.

 

[El Veterano]

Our Fiat Ducato 130 2007 based Chausson is recommended at 5 bar front and 5.5 bar rear. 72 psi and 79 psi.

 

[Jimhunterj4]

The correct tyre pressure is clearly stamped on the side wall of your tyre, you also have a production date code on the side wall too....jim

 

[Obanboy666]

Our Fiat Ducato 130 2007 based Chausson is recommended at 5 bar front and 5.5 bar rear. 72 psi and 79 psi.

Same here on a 2013 Ducato based Swift.
I have fitted tyre pal sensors so now don't bother checking the pressures once a week, just do a visual check for damage etc.

 

[ricc]

The correct tyre pressure is clearly stamped on the side wall of your tyre, you also have a production date code on the side wall too....jim

theyre normally marked with their max load and pressure..... not necessarilly what you want to run at.

in general high pressure gives a more rigid tyre which will carry more weight but you feel the bumps in the road, and the area of tyre in contact with the road is decreased so less grip.

low pressure gives a more flexible tyre so the sidewalls flex on bumps in the road hence the smoother ride, because the tyre flexes the contact patch flattens a bit , gets both longer and wider so you get more grip. downside is the flexing of the tyre causes both heat and internal wear in the sidewalls which can mean a burst tyre with speeds and long runs. in extreems an unsmooth driving style can also lead to excess sidewall flex and tyre failure.

correct pressure is a balence between comfort and grip against excessive flexing . in all cases the overriding factor is tyre load, ie axle weight.

 

[maingate]

Just to point out that motorhomes vary in size a great deal and so do the tyre pressures and tyre sizes. Telling the OP what you think your pressures are is not much use. Also, the pressure stamped on your tyre is NOT the correct pressure for that vehicle, it is the MAX safe pressure for that tyre. Giving Viv the thoughts of pumping her tyres up to 5.5 bar (80 psi) is highly dangerous and could result in her killing herself in an accident.

You should have first asked what van she has and possibly asked for its MAM. Or even easier, checked her profile and you would have seen this:

http://www.wildcamping.co.uk/forums/members/justdoitviv.html

 

[hextal]

The correct tyre pressure is clearly stamped on the side wall of your tyre, you also have a production date code on the side wall too....jim

Have to disagree with that. The correct pressure depends on the load, see earlier tables. The tyres generally have Max pressures stamped on them.

Its the same of all vehicles. If I take a pillion on my motorbike I should technically change the pressure.

 

[CAL]

Hi Viv, I've a Ford Transit SWB and I run mine at 50 psi on front and rear, fully loaded, it's mid range on their min/max, any lower and they feel spongy, any higher and they feel like solid rubber and the suspension ride seems to suffer + the grip feels lesser. It seems to be a happy medium for my van and keeps it simple for checking, have had no punctures or troubles so far and I do keep a good eye on them.

 

[El Veterano]

The correct tyre pressure is clearly stamped on the side wall of your tyre, you also have a production date code on the side wall too....jim

Rather than the correct pressure stamped on the sidewall I think you will find that that is the maximum pressure?

 

[saxonborg]

When I got my van 8/9 years ago, I was told the tires should be at 40. And that's what I have always put in. Having a flat tire, the rac put on my spare. I asked him if its pumped to 40. He said 60 the min unloaded. When I went to get two new tires fitted the next day, I asked the tire fitters, about the air pressure..... and they said 55 to 60. So they had to pump up the other two tires to match. When I had a service done two days later, I asked the garage..... they looked at the metal plate on the drivers door and it said 43. I asked is that as a van or campervan. He said campervan.

tires are 15 inch commercial I think. Its a fiat ducato, mwb.
Many thanks

I have a Burstner and the handbook quotes 3.5 bar for front tyres and 5.5 bar for the rear tyres. Pressures depend on axle/tyre loadings as others have already said. Consult your hand book if you still have it.

 

[El Veterano]

Just to point out that motorhomes vary in size a great deal and so do the tyre pressures and tyre sizes. Telling the OP what you think your pressures are is not much use. Also, the pressure stamped on your tyre is NOT the correct pressure for that vehicle, it is the MAX safe pressure for that tyre. Giving Viv the thoughts of pumping her tyres up to 5.5 bar (80 psi) is highly dangerous and could result in her killing herself in an accident.

You should have first asked what van she has and possibly asked for its MAM. Or even easier, checked her profile and you would have seen this:

http://www.wildcamping.co.uk/forums/members/justdoitviv.html

Absolutely, she should have stated exactly what her van was. But I did check her profile and saw what I assume is the van she was asking about. At no time did I say the she should inflate her tyres to 5.5 bar, I merely said that's what my camper pressures are, and I even went to the trouble of laying out exactly what MH I was talking about. Every MH is different and how much weight (and where) each person carries in their MH is also different, so there is no 'one size (pressure) fits all', I would have thought that that was common knowledge. I usually carry a full load and therefore keep my pressures as stated, other peoples requirements will be different. I run my Vito 109 work van at around 50 PSI and I would have thought that ample for her van.

 

[pughed2]

motorhome tyre pressures

viv..............motorhome weights are all different depending on use, and accurate figures cannot be obtained from manufactures............what you have to do to get as near as dammit to be safe, is initially take the average of what is suggested by people on such sites..........run on those pressures with care, and then regularly check the tread across your tyre widths...........if the tyres wear more in mid tread, your pressures are too high, and if they wear more on edges, your pressures are too low. If a tyre wears badly on one side you have tracking problems, and need a garage. Finally, just to be safe, when you take a run for up to 30 or 45 minutes, stop and feel the tyre temperature; if its hot, the pressures too low and dangerous; if its warm its ok..............unfortunately its essential to do these regular checks, until you are sure pressures are good for your van. ............steve bristol

 

[st3v3]

As above check the weight, but also...

Do you have any noticeable wear on the tyres? If they are wearing in the middle the pressure is too high. If BOTH the edges are wearing pressure is too low. One edge wearing is not connected - that's alignment.

 

[Deleted member 8468]

Our recommended tyre pressures are 79.5 PSI all round. However, the ride is rock hard and I often wonder if they have calculated it incorrectly.