Stupid question about trailer tyre pressures

[gemisastar]

I can't remember the exact number, but on the inside of my trailer door it says the maximum psi of the tyres should be about 60 (ish). Do they actually have to be pumped up to this number, which seems very high (on my car it's about 30!) - husband doesn't seem to think so but I'm not sure! They are proper trailer tyres.

 

[HeyMich]

Yes they do.

My tow vehicle's tyres are at 38psi, while my trailer tyres are at 95psi. Very different!

 

[TheHairyOne]

Yes! They really are. My trailer is 65 psi.

 

[gemisastar]

Ok, thanks very much, I will go and pump them up today, I think they may only be just over half of what they should be ?

 

[Wheels]

I wouldn't go to the maximum, that is usually much higher than you will need.
Have you got a proper tyre fitting place that can get the tyres to the optimum level and then you can keep them at the same level.

My trailer tyres are only 30 psi btw or thereabouts but it will depend on your trailer, size of wheels, size of tyres

 

[gemisastar]

See this is why I'm confused - obviously 60 psi or whatever they are does seem high which is why we didn't inflate them all the way, however with two big horses on board you can see the tyres are squashed down a bit. I just can't seem to find out if what's displayed is a target or a limit!

 

[Merry neddy man]

E-mail or ring your trailer manufacturer go by their recomendations, they should also be commercial vehicle tyres that are fitted not car tyres , personally 55psi + its carrying a lot of weight (most 4x4 and estate cars show 2x psi pressures for the rear tyres one for normal driving one for when loaded or towing the latter being higher, ROG might comment on the legal side of under inflated tyres)

 

[PeterNatt]

Firstly check that you have the correct tyres on your trailer because sometimes incorrect replacements are fitted which are not suitable for the heavy weight of transported horses. The the pressure of the correct tyres will be much higher than a car and more similar to a commercial vehicle.

 

[gemisastar]

Ok - the tyres are definitely trailer tyres, from memory I think it says either 60 or 65 psi on them. I will have a look at what it says on the jockey door and inflate them to whatever it states, thank you all for your help

 

[phizz4]

If you fill in the tyre and trailer details here, https://www.tyresafe.org/check-your-pressures/caravan-pressure-calculator/ it will calculate the pressure. Use the maximum allowable mass of the trailer (usually on the A frame at the front) and the specification of the tyres fitted.

 

[dixie]

The guy who serviced my trailer says that’s too high if you’re mainly driving on non-motorway roads (I think). SomethingTo do with potholes and punctures!
Mine are about 40 I believe.

 

[Equinity]

I can't remember the exact number, but on the inside of my trailer door it says the maximum psi of the tyres should be about 60 (ish). Do they actually have to be pumped up to this number, which seems very high (on my car it's about 30!) - husband doesn't seem to think so but I'm not sure! They are proper trailer tyres.

they are commercial tyres so rated higher than car tyres so yes the pressure will be higher.
mall Ifor Williams Horse trailers are 65psi

 

[Equinity]

I wouldn't go to the maximum, that is usually much higher than you will need.
Have you got a proper tyre fitting place that can get the tyres to the optimum level and then you can keep them at the same level.

My trailer tyres are only 30 psi btw or thereabouts but it will depend on your trailer, size of wheels, size of tyres

They are commercial trailer tyres so 65psi for an Ifor Williams horse trailer is correct.

 

[Equinity]

The guy who serviced my trailer says that’s too high if you’re mainly driving on non-motorway roads (I think). SomethingTo do with potholes and punctures!
Mine are about 40 I believe.

At 40psi the tyres will be too soft which encourages snaking under load. All Ifor Williams horse trailers should be at 65psi. They pressures are listed in their parts catalogue.