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21/1/2019 at 12:42am
Location: Lichfield
Outfit: Coachman Amara 450
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It all depends on the size of the tyre as the more volume there is the less pressure you need.
It works on pounds per square inch which means there are less square inches in a narrower tyre than a wider one so requires more pressure.
Our first caravan was about the same weight as yours with 13 inch rims and the tyre pressures were 42 psi. pressure. The caravan we have now is about 100 kgs. heavier but has wider tyres (195 x 14) with a greater volume and because of the greater volume only require 39 psi.
Both caravans mentoned above are single axle which the above tyre pressures being quoted from the corresponding Coachman handbook that came with each van.
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21/1/2019 at 8:57am
Location: Dartford Kent
Outfit: VW T6 conversion
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Tyresafe has a calculator for caravans. They are a not for profit safety organisation, and the calculations are based on the factors that Tango55 refers to.
For ours, it came out with a lower figure than the handbook, I think as it’s a lightweight. It certainly seems to tow with less bounce at this; and I feel reassured by getting an independent authority opinion..
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21/1/2019 at 11:43am
Location: DURHAM
Outfit: Mondeo TItanium 140 Avondale Mayfly 25
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Using the tyre calculator min comes out at 51psi, so I run them at 52psi
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Tot
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21/1/2019 at 11:45am
Location: DURHAM
Outfit: Mondeo TItanium 140 Avondale Mayfly 25
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Forgot to mention they are "C" rated tyres
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Tot
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21/1/2019 at 1:29pm
Location: Midlands
Outfit: Mondeo Avondale Gram
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Tells me mine should be 62PSi where the handbook says 42PSI.
Thats a fair bit out...
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21/1/2019 at 4:57pm
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yeah says mine (twin axle) should be 41 psi when the handbook says 36 and that's cold pressures
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21/1/2019 at 7:06pm
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Quote: Originally posted by flashard on 21/1/2019
Info on the tyre is 175 R13 C 97/95 Q
.
Put that in to Tyresafe.org and it recommends 64psi
Hmmm.
sounds about right to me
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21/1/2019 at 8:58pm
Location: Lichfield
Outfit: Coachman Amara 450
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64 psi. is more likely what you would put in a small trailer tyre due to the small volume like I said in my previous post regarding pounds per square inch. However, the size tyre 175 R13 94 is identical to my previous caravan which had steel rimmed wheels and the pressure in the Coachman handbook is 50 psi. so 52 psi. as stated in your initial post sounds more realistic.
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11/2/2019 at 3:17pm
Location: None Entered
Outfit: Swift Challenger Sport 524 VW Carave
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If the previous owner was working at 32-38 psi and there is specific evidence that 52 psi is the correct value, make sure that your ares are rated for these higher pressures. Also that the tyres have a load rating to meet your MTPLM.
The loading rate for the sum of both tyres must exceed your MTPLM.
Bertie.
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The 2 Tops
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Topic: Tyre pressures
via mobile 20/1/2019 at 10:54pm
