I'd ask at your local caravan dealer or tyre company if I were you razzmick. Ours is a single axle with 185/14 tyres & the pressure of 51psi is printed on the sidewalls but yours could well be very different due to it being a twin axle.
If you post your tyre size you stand a good chance that someone on here will have a twin axle van with the same size tyres on it & they might reply.
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Post last edited on 03/09/2012 20:08:13
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Sorry for the above blank post, had a senior moment.
Razzmick our twin axle had tyre preasure of 32psi, twin axle's have very much lower preasure's because the weight is spred over 4 wheels, but check with your dealer to be sure.
You can find the load rating and max. pressure from the tyre sidewall.
Ours is 82 - so that is 475Kg per tyre (1900Kg for all 4). Max pressure on ours is is 44psi. Our MTPLM is 1750, so the formula would be 1750/1900 = 0.92 x 44psi = 40.50 psi.
Quote: Originally posted by Al+Mel on 03/9/2012
You can find the load rating and max. pressure from the tyre sidewall.
Ours is 82 - so that is 475Kg per tyre (1900Kg for all 4). Max pressure on ours is is 44psi. Our MTPLM is 1750, so the formula would be 1750/1900 = 0.92 x 44psi = 40.50 psi.
Our manual says 36 psi though.
this is why I always ask the size and load index number, I'd guess your tyres are 155x13 reinforced which regardless of 'maximum' pressure stated on the tyre, are only quoted up to maximum 42psi actual pressure for the maximum stated load. So calculating a working pressure from 44psi is going to be way out.
Assuming then I'm right on the size?, in this case maximum working pressure is only 39psi at 475kg and 36psi is bang on for a total of 1700kg.