I've run several sets of Kumho for around 70K miles. They are excellent tires. Not at all cheap IMO. I've run the Douglas and got more like 60K miles as I remember. Still very good for the price. I don't drive for "sport" or "performance" or anything like that. I drive to get from point a to point b in a reasonable amount of time safely. The operator of the machine is going to have the overwhelming influence over it's safe operation.