High tyre pressures

vince56 · Senior Member

High tyre pressures

spida · Guru

you know it is too high when everything bounces out of the cupboards :)

Possum3 · Guru

Please see; caravanchronicles.com/guides/calculate-the-correct-tyre-pressure-for-your-caravan/

LLD · Senior Member

My single axle van says 40psi unladen (1325kg) , 50psi fully loaded (1600kg).

aussie_paul · Guru

Our 24' Jayco Sterling are showing 40 psi cold. I checked them after trip home, 90 mins, and they were 43 psi, so I am happy with that. The compliance plate says 44 psi.

Aussie Paul. smile

snapper49 · Senior Member

I would do what the compliance plate says

Aus-Kiwi · Guru

It's a ballance of speed, weight and those ridges they seem to design on our highways . Mine says 90lb ., I have found going 75 inside 80lb outside seems to help on bad roads . On high speed smooth roads I pump them around 90 lb . This is on Fuel tyre motorhome .. But man some roads and corigations !! I'm sure a caravan would rattle itself to pieces ??

BazzMann48 · Veteran Member

What's the pressure stamped on the tyre/s?

PeterD · Guru

vince56 wrote:
Hi All,The placard on my 2015 dual axle van says to run tyres at 450Kpa (65psi ish) sounds very high to me, any comments please?

Can't really comment until we know:

1.. Caravan ATM

2.. Tyre size

3.. Tyre manufacturer and model number.

03_Troopy · Guru

snapper49 wrote:
I would do what the compliance plate says

They don't always get it right.

vince56 · Senior Member

For info I rang the dealer, he says the compliance plates are always too high, instead of running 65psi to run 45psi.
He says for some reason they stipulate the max load and max pressure, not the "running" pressure of 45 psi. Bit strange I reckon!

Tony Bev · Guru

Hello vince56
Glad to see that you had got it sorted by ringing the dealer, I can not comment on the corect pressure as others have said, we need the tyre specs and the loaded weight of the van

If sometime in the future you decide to increase the tyre pressure, for fuel economy when on the bitumen, then set out below is the information I had gathered, for my own circumstances

1. Always go by what is stamped on your tyre, as 03 Troopy has already said, the compliance plate is not always correct
2. As Possum3 has already pointed out with his link to the pressure guide, the maximum pressure stamped on the tyre, is the very maximum allowed, and must never be exceeded
3. There appears to be a lack of knowledge within the tyre, and Fiat Commercial Vehicle industries, in my area, so I will assume it is the same throughout Australia
TR413 (the normal) tubeless valve, and the only one of this type the tyre resellers stock, is only good for 65 PSI maximum pressure
TR600HP tubeless valve, is good for 100 PSI maximum pressure
At a quick glance, both of the above valves look the same. The difference is easy to spot, as the normal tubeless valve has the rubber up to the dust cap thread. The high pressure valve, has the brass stem below the thread exposed.

I hope that I have not opened a can of worms, on tyre valves, but this is what my research showed, as the tyres on my Fiat Ducato are capable of 80 PSI.
I was concerned that both Fiat, and the tyre resellers, were trying to recommend the normal tubeless valve for my motorhome.