PEUGEOT BOXER 1.9Ltr Diesel Engine Page 5


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1.  Tyre Pressures. 2. Holiday in the South of France - Tyre problems


Tyres are an important part of the Motorhome, simply because it is usually loaded to maximum most of the time.

Incidentally Michelin Tyres recommend useage of the Manufacturers maximum pressure for all tyres when a vehicle is fully loaded. This could be for most Motorhomes. See their web site:

Checking the tyres for pressure requires a gauge which must be reasonably accurate.

See the catalogue of the International Tool Co. for a variety of suitable measuring pressure gauges, also at their web site:  Tel: 01604 646433. You will find in this web site the catalogue does not display all parts available. So a request for a printed catalogue is recommended.

Below are photos of the tyre pressure plates as found on the door pillar of the Peugeot Boxer.

Plate Number Two has in the first column pressure for the front tyres as 80 Bar.
The second and third columns give the required tyre pressures for the rear tyres at particular weights shown.

For 550Kg = 22 +/- 3Bar
       650     = 30 +/- 3Bar
       900     = 45+/- 3Bar
       1460    = 80+/- 3Bar

As most Motorhomes are usually at their maximum weight for travelling purposes, then the Tyre pressures would be 80Bar for front and rear tyres.

NOTE: As 2.4Bars = 35PSI [1Bar approx = 14.7psi]  It would appear the tyre plate 'Number Two,' found on the Boxer can't be right! 
See Plate 'Number One' which indicates a tyre pressure of 3 Bars, which equates to 43PSI +/- 1PSI for the 195/70 R15C Tyre.

I have since learned the information refers to the pressure of the brake pipe lines. The front refers to the brakes and not the tyres!

The plate 'Number One,' fitted by Peugeot indicates a more accurate level.

A sticker placed inside the handbook by Elddis Explorer Group indicate a tyre pressure of 44PSI front and rear.

On my Motorhome the tyres always looked splayed.

See below for my correspondence with Michelin.

Click for larger images

Tyre pressure Plate Number No. 1

Plate Number No.2
I have been informed the plate refers to the pressures expected to be found in the

Due to the conflicting information plates added by the manufacturer, and the Coach builder, tyre pressures were always a worry for me.

Below is a copy of emails sent to the Michelin Tyre Company. Their service is an example to industry in this country. It is possible to peruse their site at:

Subject:    Tyre Pressures
 Date:       06/07/2002 18:47

Michelin Tyre Public Limited Company.

 Regarding your web site:

 Would you kindly advise me on correct tyre pressure for my:
Peugot Boxer Van 1.9Tdi.  Elddis Autohomes Wanderer  Motorhome.

 Max weight 3100Kgs

1. Front wheel max weight: 1560

2. Rear  wheel max weight: 1560

Tyres fitted at present: 195/70R 15C  LOAD INDEX; 104 SPEED SYMBOL; R
Max Tyre Load 1930lbs @ 65PSI.


----- Original Message -----

From: "Webinfo-AMWEBUK" <>
Sent: Thursday, July 11, 2002 9:47 AM
Subject: Message no: 9702-7 Re:Tyre pressures

Dear Mr Walters
Thank you for your recent e-mail
The values you have provided are more than likely for the actual van, full load conditions, and as such would not be representative of your Motorhome weights.

If you weigh your front and rear axle with a full tank of fuel and water then we will give you the optimum pressures for your tyres.  Please feel free to call on the number given for further help. Tel 0845 366 1535

Thank you once again for your interest in Michelin
Yours sincerely
Webmaster, Michelin Tyre Public Limited Company

Michelin Tyre Public Limited Company

Registered in England no.84559. Registered office Stoke-on-Trent ST4 4EY.

Subject:    Re: Message no: 9702-7 Re:Tyre pressures Reply from Brian B.

Date:       11/07/2002 20:31

Hi Michelin,

Many thanks for you quick response to my Email.

Regarding my query, our Motorhome is usually loaded to near the maximum as we don't have much spare capacity.  That's my worry!

Can  you kindly give me the values for the information I have supplied, which are maximum.  I will then place the information in my Spreadsheet to produce pressures for reduced weights.

Many thanks for your consideration.

Best Regards

Dear Mr Walters,

Thank you for your recent e-mail
The pressures we would recommend based on the information provided would be:

    56psi front and 56psi rear

We have allocated your message the reference number indicated above. If you need to contact us again regarding your message, we would be grateful if you could include the reference number.

Thank you once again for your interest in Michelin
Yours sincerely

Webmaster, Michelin Tyre Public Limited Company

Interesting information on tyres can be found at:
Also see amazing tips and how to repair those windscreen stone chips

Tyre Pressure Chart

Prior to my contacting Michelin, I prepared a chart from the information as supplied in the handbook. This exercise was carried out as the Motorhome had been upgraded by the Coach Builder and plates had been affixed giving a Total Maximum weight of 3100Kgs, with 1560Kgs over each wheel. 

Therefore tyre pressure information is not provided in the handbook for this vehicle. Other than that inserted by Elddis giving 44PSI.

As the tyres always seemed splayed I prepared the chart below to see if the coach builder's information was correct.

Tyre Pressures Chart

From the above chart I drew the green line and correlated with max. weight figure which came up with a tyre pressure of approx 53/54PSI.

Email from Michelin gave the pressures as 56PSI.


Below is the chart which came with the handbook.
The green column as applied to my Motorhome.

Conversion Builders Tyre Pressures

Recent coresspondence with the Explorer Group, coachbuilders of the Wanderer would suggest my findings are correct! [ 2006 ]

Tyre Age

As this is such an imortant issue for Motorhome Owners I have included this piece from MMM Jan 2004 by Derek Uzzel, that gentleman who is a hive of information, and can be 'Seen' on the MMM Magazine Motorhome forum.
[Hope you don't mind Derek but I felt I must place your information here!]

To David, this is the bit of my 11/12/02 posting that refers to tyre age. I'm not sure if the marking-convention is universal, but it certainly applies to Michelin and Goodyear as I've got samples of these makes of tyres on my own vehicles.

"Tyre Age. This can be deduced from the short information-section on a tyre that begins "DOT". (It's normally stamped on only one side-wall. So, if you can't locate it, it's on the inside wall.)

If a tyre has been manufactured from year 2000 onwards the information-section will end in a 4-figure group. Often it will be seen as DOT XXXX 0401

The first pair of numbers of the second group indicates the week of manufacture and the final pair of numbers shows the year. Thus "0401"= 4th week of 2001, and "2702"=27th week of 2002, etc.

Prior to Y2K a 3-figure code was used. This works much the same way, so "185"=18th week of 1995, "479"=47th week of 1999, etc.

 Eagle-eyed forumers will have spotted that a 3-figure code will be ambiguous (eg. "179" could apply to a tyre made in 1999 or 1989): in fact, an 'unadorned' 3-figure code indicates a 1980s-manufactured tyre. But when the 3 numbers are followed by a small triangle/diamond shape the tyre was manufactured during the 1990s. (Yes, I know your average chimp would have chosen a 4-figure code to start with, but that's humans for you!)

You may get a surprise when you check your tyres' age codes. Our Herald motorhome was completed by the Compass factory in November 1996 and first registered in May 1997, but the tyre code was "056" (Jan/Feb 1996) making the tyres 14 months old before the 'van was sold. Rather like a butterfly's life-cycle, coachbuilt motorhomes go through several distinct stages before ending up in an owner's hands, so I'm sure our 'van is not unique in being born with 'old' tyres."

Holiday May 2005

      It is not often that I see tyre problems aired in the Motorhome Magazines. They are normally very reliable. So I relate my experiences in the South of France during May 05.

      It is my habit to run the van every fortnight. Keep the engine seals wet and the tyres from forming a flat. I also check the tyres and pressures before running. I had considered a change of tyres this year [2005] but as the treads were like new, I decided to leave them another year, as they had only been on for three years and had run for 18,000 miles.

     During our holiday in the South of France, near Montpelior. In temperatures of 35C, I experienced a slight rumbling from the back tyres.

     Calling into a garage to have them checked, the mechanic pointed out to me, the outside rims had 'Moved' causing a 'Castellation' effect to the tread centre, and raising them above the level of the outside rims of the tyre. The mechanic explained to me the composition of British tyres cannot take the extreme heat of the South of France. He had experienced this effect many times with British Motor homes, as his garage was close to camp sites. We checked the front tyres together which seemed to be OK.

     Contrary to opinions of French garages at home, I found him most accommodating. Not having tyres suitable for our Motorhome he went to Montpelior, an hours drive from our location and sourced new tyres. This was 3pm on a Friday afternoon. Cost? £240 for two new rear tyres.

     After almost a month down South we were making our way back home. North of Cahors I experienced a slight vibration from the steering. The Boxer is usually very stable. Checking the tyres all seemed well!

     Passing a Peugeot dealer we decided to stop and have it checked. The mechanic immediately pointed out to me faulty front tyres! Prior to this the tyres must have stopped on the good portions when I checked them.

      I was horrified to see the damage. The tyres had stopped in a position where the faults could be seen. It would appear, due to the high temperatures we were experiencing, 35C, the treads were coming off the rim. These tyres were NOT Re-treads. see image below. The mechanic was able to place a pen into two holes on the outer rim. Again he said it was due to the heat and unsuitable tyres for that part of the world, plus the incorrect tyre pressures! [ I check them weekly] Cost of 2 new tyres, £220.

     The moral of the story, you cannot take chances with tyres. 4 years is the maximum for motorhome tyres. The Caravan Club recommend a change of tyres after 5years, but I do believe they are caravan orientated.

     The tyres by the way were fitted by a local garage when I bought the Motorhome three years ago. They were marked 'Targa' and were from an Eastern Block country. I was assured at the time they would be suitable for a Motorhome. I will not be returning to that garage for replacements!

Damaged tyre due to Heat?


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