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Trailer Tyre Pressures please

Richy B

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155/70/12 ;)

It should also say what pressure to inflate them to on the sidewall for max load (as well as max pressure).

Our Ifor Williams 3.5 ton beaver tail trailer trailer has 95psi printed on the sidewall (check here on where to find the info)

Or as a guide check http://www.ntta.co.uk/law/trailers/load_pressure.aspx

The table says 87/90 PSI as a guide for 155/70 x 12 depending on speed and axle load but it also depends on the load rating of the tyre which you have not quoted.

e.g . our Ifor is 185/60/R12 104/101 N which 104 is 900Kg for a 3.5T trailer (900Kg x 4 = 3.6T)

Load and speed tables here

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