My friend can't tell the difference between 1080i and 480 on my tv. It's highly subjective if you'll feel it or not. But I can tell you that for 17, 18, 19, 20 inch wheels, forging makes a big difference in weight, we are talking 10-12 pounds. Some stock cast 18 inch VW wheels weight 28 pounds, that's a boat anchor! 14, 15 inch wheels, the stock VW wheels, there's a minimal weight difference.But don't buy forged wheels for fuel economy because you will be disappointed. Buy them for better handling, comfort, and performance because you WILL notice the difference.