No, I lost 1.36 kg per wheel.

Dymag fronts: 39 lbs/17.73 kg, Stock fronts: 42 lbs/19.09 kg
Dymag rears: 47 lbs/21.37 kg, Stock rears: 50 lbs/2.73kg

The tread wear of the tires on the stock wheels was .100" (2.5 mm). The PS2's on the stock rims have right at 6K miles on them.

I wonder how much the rubber that has worn away weighs?