I sort of agree with Pete, but I'm not a good enough driver. If you consider it "fun" to take a 60mph corner with the back end hanging out, keep your stock set up. I prefer taking the 60 mph corner stuck to the road thinking that maybe if I took it at 80 the back end might hang out or the front end may plow. When I drove my 1969 GTV with the stock 165 HR 14 XAS tires I found it a little "twitchy". It was really twitchy when I drove it in the winter on dry roads with the studded winter tires on the back . I've not found the limit of my current setup, and so far I'm not really looking for it.