I own a 09 Pontiac G8 GT with the sport package. I have over 130K miles on my car now because I use it for my business. I do investigations and surveillance and most of the time I drive at high speed. I put approximately 3600 miles a month on it. The Hankooks I purchased were the 2nd set of tires I purchased for my car after the factory set and I must say you couldn't find a better tire for the money. I drive alot of highway and city and my average highway speed is from 80-100mph. I do alot of highspeed manuvering and cornering. These tires hold as well if not better than the original Bridgestone RE050's that were stock for the car. I did get over 55K miles out of the original tires, because I am anal about rotating my tires every 6K miles, but for the differnce in price to the Hankooks there is no contest. The Hankooks performed better in the rain up to 100mph than the Bridgestones and the road noise was minimal. I was able to corner even faster with these tires after they were broken in 1000 miles. I also never change my tires in the winter so I run my summers all year round. If you have light snow their ok at low speed, but of course 2inches and above I drive my truck. I've owned alot of performance vehicles from Evolutions to custom built tuners and the only tire so far that I've had that out performs these are the Yokohama Advans I had on both of my EVO's. If you want to try a superb well priced tire that is good for all around use try them. You'll be impressed.