I love my Avid Envigors, I drive my G pretty hard. When I first bought my G in 2008 (its a 2006) I put on OEM Bridgestone Potenza's and they wore down very quickly. The Avid Envigors do have deeper tread, which I like because when it rains in Calgary I get really good handing better then the Bridgestones. I notice no loss in performance I actually think my car performs better, the tires hug corners better, and I can drive aggressive in the rain because my car will not hydroplane. I will only buy Avid Envigors from now on. The Potenza's cost me 2000.00 when I first purchased them in 2008 when I bought the car and I have factory 19 inch rims. I bought the Envigors last year for 1000.00 and from the same tire shop. The reason why they are cheaper is there is more options out there then there was in 2008.