Tyre pressures

almillar

Yep I think Ganga's got it, and I think the photo is terrible, or terribly cropped - at the very right of it it looks like there's information missing, maybe a table with 2 sections. 1 axle, 2 axle? Doesn't explain the middle entry though...

ElephantBoy57

Although it says the size of the tyres at the top, those pressures are unlikely to relate to the same tyres.

When inflating tyres above 70 PSI a tyre inflation cage is required just in case the tyres explode.

So I cannot see how 72 PSI would refer to bog-standard trailer tyres.

Ganga

ElephantBoy57 said:

Although it says the size of the tyres at the top, those pressures are unlikely to relate to the same tyres.

When inflating tyres above 70 PSI a tyre inflation cage is required just in case the tyres explode.

So I cannot see how 72 PSI would refer to bog-standard trailer tyres.

I am sure the two axle plant trailers we used to hire had tyre pressures above 70 psi and we never had to use any cages.

AdrianC

ElephantBoy57 said:

Although it says the size of the tyres at the top, those pressures are unlikely to relate to the same tyres.

When inflating tyres above 70 PSI a tyre inflation cage is required just in case the tyres explode.

So I cannot see how 72 PSI would refer to bog-standard trailer tyres.

I can.
These aren't car tyres - they're heavy-duty trailer tyres. Typically 104 load rating - 900kg/tyre. The max pressure will be on the sidewall, and will be WAY above what you'd expect a car tyre to be.

ElephantBoy57

Ganga said:

I am sure the two axle plant trailers we used to hire had tyre pressures above 70 psi and we never had to use any cages.

Not everyone follows health and safety guidance.

Herzlos

ElephantBoy57 said:

Although it says the size of the tyres at the top, those pressures are unlikely to relate to the same tyres.

When inflating tyres above 70 PSI a tyre inflation cage is required just in case the tyres explode.

So I cannot see how 72 PSI would refer to bog-standard trailer tyres.

Do you need a tyre cage to inflate a 12" tyre up to 72PSI? Google isn't giving me anything useful, I only see mention of large/commercial vehicle tyres and I know there must be a cut-off somewhere as my bicycle tyres are 110psi.

That's of course not saying that you shouldn't use a cage to inflate the tyres on a commercial trailer, but 72psi doesn't seem particularly far fetched at all (my 1500kg trailer requires 65psi).

facade

The cage thing is when fitting them. or inflating from flat. Just topping up by less than 10% or so doesn't need one.

If the tyre has been run at below 90% of pressure, it should be dismounted and inspected for internal damage before re-inflation.

(I know- most people don't do that in real life, but most people think "accidents" happen to Other People, and then only when being filmed for youtube)

Supersonos

almillar said:

Yep I think Ganga's got it, and I think the photo is terrible, or terribly cropped - at the very right of it it looks like there's information missing, maybe a table with 2 sections. 1 axle, 2 axle? Doesn't explain the middle entry though...

Sorry, I'm no photographer I admit.

No other useful info on the sticker other than what's in my photo.

forgotmyname

The 2000kg, 2600kg and 3000kg are Twin Axle trailers hence the drop in PSI required.