Dave, that's a great point and a valid one too.
The fact of the matter is that a street car is a lot different than a race car. It's true that a loose race car will go faster around a track than a tight race car. But that's given the fact that you've got a lot of butt time in the race car. You know how the car is to respond in each and every corner time and time again and lap after lap.
For a street car, I reccommend that it be as tight as possible. The point of a street car is to #1 - get you there alive and #2 respond with agility when some drunken Bas-Tard pulls out from a side street right in front of you and you have to make an evasive manuver. These things happen at the very last second and in those conditions, a tight street car could save your hide by going where you point it whereas a loose race car will land you in teh ditch as a passenger of your own ride.
I know this from first hand experience. I was in my '89 way back in the day. It was about 8:10am and I was late for work (no big surprise there - supposed to be there at 8:00 sharp). I was on a 4 lane highway with a center turn lane and I was going way over the posted limit. I was looking ahead and saw a late 80's Towncar pull up to the stop sign of a cross street. I was bookin' along in the left hand lane (at nearly twice the limit) and fully expected this Blue-Hair to pull out and stay in the right hand lane (there was no one else on the road but us at this time of the morning). However, when she pulled out, she came right over into the left hand lane right in front of me. I never expected this and was still at full gallop. So I swerved left, then countered right and then left again passing right around her to the left via the center turn lane. The car did exactly what I wanted it to and responded exactly as it should have. Had I not made it the tightest I knew how at the time, I would have either occupied her trunk, or spun the car out and into the gas station to the left, where they probably would have had to strain my remains for finger prints.
The point is that for a race car, a little loose is the best way to go fast. But for a street car, tighter is better.
Just my opinion...