Tyre Pressures

PeterR
PeterR Forum Participant Posts: 59
edited March 2012 in Caravans #1

I have a Bailey Vermont and have had the MTPLM upgraded by Bailey. Prior to the upgrade the sticker on the side of the caravan gave a Tyre Pressure of 55psi. Now I have the upgrade and the MTPLM is 30kg heavier, the Tyre Pressure on the new sticker is 43psi.
Why would the pressures be lower when the caravan can be heavier?

Regards Peter