Tyre pressure

When you say "these tyres", which tyres are you referring to?
It is well known that michelin go on about 80PSI on the Aglis Camping Tyres, but what about the other Aglis tyres (as far as I know, "Aglis" is their term for van tyres - be they camping or any other type. I have Michelin 'Aglis' tyres on my Motorhome but they are not Camping ones)
Michelin Agilis CP tyres.
 
Apologies for bringing up a subject discussed many times on here.
I have mitchelin agilis tyres which I run at 65psi.
My van is a 3.5T ducato a class.
But once warmed up after a few miles they rise to around 72psi.
Reading some posts on here I may be running a bit under pressure.
Any opinions on this.

Thanks in advance.
If you want to know what tyre pressures to run then take a look at this website https://www.tyresafe.org/motorhome-tyre-pressure/
My vehicle is a 4.5 ton Autotrail Chieftain and the tyre pressures are 3.9 Bar (57psi) on the front axle which is rated at 1.8 tons, and 3.5 Bar (53psi) on the rear tag axles which are rated at 1.5 tons. A much better ride and best minimal tyre wear has been achieved since consulting "Tyre Safe"
 
If you want to know what tyre pressures to run then take a look at this website https://www.tyresafe.org/motorhome-tyre-pressure/
My vehicle is a 4.5 ton Autotrail Chieftain and the tyre pressures are 3.9 Bar (57psi) on the front axle which is rated at 1.8 tons, and 3.5 Bar (53psi) on the rear tag axles which are rated at 1.5 tons. A much better ride and best minimal tyre wear has been achieved since consulting "Tyre Safe"
That tells me 53psi front and 80psi rear but for full plated loads. But actual rear is 1600, and for gross vehicle weight I can only put 1700kg on rears….so still unsure.
 
The 4&6 rule is well known in Australia , as due to conditions people are generally very tyre conscious, they also wear out quicker . I found it to be pretty sound rule, on several types of vehicles . It is important to adjust at different axle loads tho . Whereas Manufacturer pressures are usually for max load scenario .
 
If you want to know what tyre pressures to run then take a look at this website https://www.tyresafe.org/motorhome-tyre-pressure/
My vehicle is a 4.5 ton Autotrail Chieftain and the tyre pressures are 3.9 Bar (57psi) on the front axle which is rated at 1.8 tons, and 3.5 Bar (53psi) on the rear tag axles which are rated at 1.5 tons. A much better ride and best minimal tyre wear has been achieved since consulting "Tyre Safe"
Interesting Site.
I have been running around 65PSI all round on my Michelin Aglis (non-Camping) shod 3850kg MH and thought I should up it a little since I did the weight uprate from 3500 to the new 3850 - but Tyresafe.org is saying I am actually spot on at the rear and a bit high at the front.
 
That tells me 53psi front and 80psi rear but for full plated loads. But actual rear is 1600, and for gross vehicle weight I can only put 1700kg on rears….so still unsure.
You have put your axle weights in correctly, now reverse the weights (ie front is rear) and see what the readings are. On a 2 axle motorhome 80 psi is always quoted for rear axles on tyresafe. That will give you the actual recommended pressure for both axles.
 
You have put your axle weights in correctly, now reverse the weights (ie front is rear) and see what the readings are. On a 2 axle motorhome 80 psi is always quoted for rear axles on tyresafe. That will give you the actual recommended pressure for both axles.
Do you know why Tyresafe always quote 80 for rear? Michelin do also, but Continental give pressures according to true axle weight.
 
Do you know why Tyresafe always quote 80 for rear? Michelin do also, but Continental give pressures according to true axle weight.
Just done what you say now says 61. I find tyresafes explanation unsatisfactory because surely the ‘special’ circumstances of motorhome loading are relevant to both axles not just the rear.
 
Do you know why Tyresafe always quote 80 for rear? Michelin do also, but Continental give pressures according to true axle weight.
It's some kind of liability problem, the original tyres on my van where supposedly built as CP but they are not allowed to mark them as such, so I fill in the form as C tyres and they give lower pressure, I fill it in as CP and it gives the higher figure.
p.s. my original tyres where Conti 215/75C16, if they where to CP regulations they would not be up to the axle loads.
 
Shame the tyresafe site just list rubber bands, not decent tyre sizes :p :ROFLMAO:
Would be interesting.
 
It's some kind of liability problem, the original tyres on my van where supposedly built as CP but they are not allowed to mark them as such, so I fill in the form as C tyres and they give lower pressure, I fill it in as CP and it gives the higher figure.
p.s. my original tyres where Conti 215/75C16, if they where to CP regulations they would not be up to the axle loads.
For my Continental CP tyres on previous van Continental were happy to recommend pressures appropriate to axle load on both front and rear, which was a lot less than 80psi.
 
For my Continental CP tyres on previous van Continental were happy to recommend pressures appropriate to axle load on both front and rear, which was a lot less than 80psi.
Yes Conti will still recommend pressures for load, as for Michelin, some years back they did the same, I read that they had become risk adverse due to motorhome users asking for pressures at specific load then subsequently upping load without increasing pressures.
 
Yes Conti will still recommend pressures for load, as for Michelin, some years back they did the same, I read that they had become risk adverse due to motorhome users asking for pressures at specific load then subsequently upping load without increasing pressures.
I can understand that. But on a van like mine that would result in pressure (80 psi) intended for a 2000kg axle, that is not actually permitted to be loaded above 1750kg because for the UK market the total load is down rated to 3500kg from the 3650kg at manufacture. The result is lightly loaded rear wheels inflated to give little contact area and consequently poor braking increasing the risk of rear wheel skid… or am a wrong in that interpretation. I want a real solution, not one that is designed to protect the tyre makers backside.
 

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