what size are these wheels?
 

front tire size 235/40
rear tire size 285/35

what the hell kind of sizes are those?

Thats the width of the tire ( 235mm ) and the profile of the tire ( 30mm )

Sounds like some meats on the back .. what kinda car ?

phat fucking tires

235/40 on front and 285/35 on rear ?! are you sure about those sizes ?!

and what do you mean by which size ?!

I hope this link answers your question http://en.wikipedia.org/wiki/Tire_code

just fyi, the second number in 235/35 is not a measure in mm. its the % ratio of height to width.

235/40 = 235mm wide and 40% of 235mm sidewall height. (90ish mm)