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06/5/2017 at 7:39pm
Location: Royal Forest of Dean
Outfit: Motorhome
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Isn't the tyre pressure on the weight plate by the door? Alternatively the tyresafe.org website has a pressure calculator for caravan tyres.
Rob
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06/5/2017 at 7:48pm
Location: Midlands
Outfit: Mondeo Avondale Gram
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That pressure calculator is way off for my van.
They say 62 PSI... Where my handbook states 42PSI. So not just a little bit out a LOT out.
Link on theoir site doesnt work on some pages. New one is... http://www.tyresafe.org/check-your-pressures/caravan-pressure-calculator/
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06/5/2017 at 7:51pm
Location: Royal Forest of Dean
Outfit: Motorhome
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Grampian, that tyre size mentioned above doesn't look right to me. Shouldn't there be a load rating and speed rating eg 99L ?
Rob
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06/5/2017 at 8:11pm
Location: Lichfield
Outfit: Coachman Amara 450
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The tyre pressure calculator is way off for my van too. The tyre pressures for my caravan in the official Coachman handbook is 39 psi. and the calculator states 45 psi.
When you consider how many square inches there are in the volume of a tyre, an extra 6 pounds to every SQUARE INCH is a heck of a lot of extra pressure.
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06/5/2017 at 9:05pm
Location: Llanidloes Powys
Outfit: Skoda Yeti SEL4x4 +Bailey Ranger 460-4
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My Ranger handbook says 39psi.
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06/5/2017 at 11:17pm
Location: West Yorkshire
Outfit: Bessacarr Cameo 625 2011
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Quote: Originally posted by geoffers01913 on 06/5/2017
Ihave a bailey ranger 450/2 with 175R13 UE-168 Tires on does any one no the preasures please as i have no hand book thank you
Those tyres are described in various places as commercial van tyres with extra heavy duty sidewall construction,so probably the best choice for shaking the van to bits..
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06/5/2017 at 11:49pm
Location: Lichfield
Outfit: Coachman Amara 450
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Quote: Originally posted by chrisn7 on 06/5/2017
Quote: Originally posted by geoffers01913 on 06/5/2017
Ihave a bailey ranger 450/2 with 175R13 UE-168 Tires on does any one no the preasures please as i have no hand book thank you
Those tyres are described in various places as commercial van tyres with extra heavy duty sidewall construction,so probably the best choice for shaking the van to bits..
Any type of constructed tyres will only shake the van to bits if they are not balanced.
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07/5/2017 at 12:25am
Location: Midlands
Outfit: Mondeo Avondale Gram
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175x13 is the same as 175/80x13 but sometimes when the profiles is missing its a commercial tyre.
It would have a load rating and a speed rating.
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07/5/2017 at 11:16am
Location: Lichfield
Outfit: Coachman Amara 450
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Quote: Originally posted by geoffers01913 on 07/5/2017
Thanks every one will put 39 in
I would have thought that with a 175x13 the pressure would have been greater than 39 psi.
My previous 450/2 Coachman had the same size tyres fitted (175x13) on steel rimmed wheels and the pressure in the handbook was 50 psi. The caravan I have now is an identical model but with 14" alloy wheels with tyre size of 195x14 and the pressure in the handbook is 39 psi.
The basis is that the smaller the tyre the less volume there is so the air pressure increases.
It sounds baffling but it is calculated on pounds per square INCH so the bigger the tyre the more volume there is. Although a tractor tyre is huge in comparison it only needs around 15 psi. merely because there are lot more square inches than that of a small tyre.
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Topic: tire pressure
