A BBK adds weight as well. The stock Z32 280mm rotor is 18.5lb. The 340mm Genesis brembo rotor I'm running is 21lb. There's 2.5lb added to each front wheel on top of whatever the wheel weighs.
-Dan
"Capitalization is the difference between helping your Uncle Jack off a horse, and helping your uncle jack off a horse." "'she' also likes to swap since I think I am going to need to give her to woody again." - Dvlhntr "full alphabetic boost mode" - ChristopherTheOne " Purrs like a sexually satisfied black panther." - BigTDogg "Two oil eating, angry, spinning triangles of death." - turtleboy on rotary engines