Each wheel for me = 20+kg.
Rim alone is 24.5 pounds
Tyre is about 10+ kg (205/45R16 ST115s)
But it's really for hard cornering, and high speed stability.
Just went to Rifle Range Road yesterday to "show" my friend around.
Being less than 1 foot away from the railings is really
shiok!
And of course fuel consumption is horrible. Sometimes I only get
7km per litre. At best, with constant reminders to myself to drive
"slower", I can hit 10km per litre. 
