It provides more aggressive steering. Try it, you might like it
edit: Hey Ling, it was kinda ironic that Beale brought his "racing vehicle dynamics" books with him to the track to point out exactly what's wrong with our toy car setups and logic...but nowhere in the books does it say how to fix it. Typical engineer books that are good at defining but not so good with applying... Oddly enough, one of the books said that front inboard toe out or anything that promotes roll steer, is bad. Go figure