weight of sr4 plus yam 40 autolube 2s plus trailer

[chris.moody]

I am thinking of changing my tow car for something much smaller. Anyone know the likely weight of a sr4 plus yam 40 autolube plus trailer? One of the possible cars on my list will only tow 500kg unbraked and I want to make sure a sr4 will be legal on that.

Thanks
Chris