Performance z stock wheel weight and wats

[zwannabe]

Just found out the 19" wats weights and want to compare with the stock wheel's weighs but couldn't find it with search on the net or here for performance z. anyone ?

Eight spokes F8 19x9.5J 12.5 kg　
Eight spokes F8 19x10.5J 13.5 kg　

 

[zwannabe]

update: from total wheel+tire, i'm guessing the stock wheels are:
52.4-30 = 22.4 lbs
54.8-30 = 24.8lbs
the differences between wats and stock wheels become
27.5-22.4=5.1lbs
29.7-24.8=4.9lbs

too much for the unsprung weight added. I hope the wats inspired wheels on the jdm customized z will be in production in the future. now i'm thinking about the ambient lighting instead. suggestions welcome. cheers.