not really if you look at it from this perspective at least for me and what I would be running. It eliminates the need for spacers and is a custom aftermarket wheel.

Stock Setup
19x9 Front: Rim 23.2lbs With tire/stock 52.2lbs
19x10 Rear: Rim 23.9lbs with tire/stock 56.8lbs
Z1 spacers weigh 16LBS for all four.

56.2LBS each front wheel x 2 = 112.4LBS
60.8LBS each rear wheel x 2 = 121.6LBS

From Forgestars Data Testing on Website
19x9 Front: Rim 25.5lbs With tire/stock 54.5lbs
19x11 Rear: Rim 25.7lbs with tire/stock 58.6lbs

54.5LBS each front wheel x 2 = 109LBS
58.6LBS each rear wheel x 2 = 117LBS

Spacers sold to URUZAI!