If you look at this comparo you can see what the tires are aimed at. The pure one probably wont get the mileage a 2ct gets. I've run every sport tire michelin makes on the street and track, my experience was the 2ct's cost more than the pilot power and didn't provide any more grip and very little more mileage so they didn't justify the premium. The road 2's provide just as good of grip as those 2 and cost about the same as the 2 ct's but produce significantly more mileage, the big plus for the road 2's is they don't square off like the others when you slab it or commute (hell I'd run the road 2's on the track).
When a tire squares off it can produce some cornering issues. When going from upright to lean you go from a fairly normal contact patch to reduced contact patch and back to a normal contact patch in an instant due the squaring off producing a slight ridge. If your on the gas or coming on the throttle hard it can cause unexpected grip issue's and spin up on you (speaking from experience here). This is what I really like about the road 2's, they don't square off like the others and actually produce a good even wear pattern from side to side through the life of a tire. I have a road 2 sitting in the garage that is a back up with maybe 1000 miles left on it and still has a nicely rounded profile. I've had to change powers and 2 ct's before that still had life in them but because they had squared off so bad were unpridictable in handling characteristics.
I'm not saying 9seconds is wrong in his assessment, this is just my opinion based on my experience and riding style.
* Last updated by: heathun on 4/26/2010 @ 5:57 PM *