There's a picture of a Prius with the Eco Drives on the main page's flash images.
Click on PRODUCTS --> RAYS WHEELS
Click on Eco Drive in the left nav bar.
･Forged 1 piece Wheel
･Color: Spark Silver, Formula Silver (Extra 2,000 yen)
･Included: Center Cap, Hub Ring, Valvestem
･Only for PRIUS.
･Taxes are not included in the prices.
CE28 ECO DRIVE
15 inch: 4.6kg (10.1 lbs)
16 inch: 4.9kg (10.8 lbs)
Toyota OEM Rim
15 inch 6.5kg (14.3 lbs)
16 inch 6.9kg (15.2 lbs)
3% better fuel economy
1 second faster acceleration from 30km-100km (19 mph to 62 mph)
I need someone to translate this: rays_eco
It seems to be saying OEM 15" weight is 6.8 kg.