Since these are the newest hot-shit tire and Michelin prices are dumb-expensive, I thought I would give these a go. Here's what the first 100 miles felt like.
-These tires are rounder than the PP's.
They don't turn in as well so if you're used to a triangular profile tire, they'll be a bit slower. Once healed over, they corner just fine they just don't "fall in" the same as the PP so you have to muscle them over a bit more.
-The rear tire is shorter than the PP by a slight bit. Front tire is close to the same, for reference sake:
Ft BT: 23.3 Rear BT: 24.4
PP: 23.46 Rear PP: 24.57
This doesn't help the slower turn-in. I found this out when the front would push when accelerating out of a corner. Raised the rear about 10mm (2.5mm shorter bones) and all is once again right with the world.
I noticed this after I spooned them on with no changes that the rear was hanging in the air on the center stand. With new PP's, both tires were on the deck when new on the center stand. With the shorter bones, both wheels are back on the deck. I'm also running a newer GSXR rear shock that's 1/2" longer than stock. All total, I should be right around 45mm higher than stock.
-The side compounds are SOFT....
Even on the street, you can get the things to look like they're on the track. I was just scrubbing them in and I noticed that they were already starting to look grained on the side like I had them heated up on the track. I'm running 29/35 and probably will run 30/30 this 6th when I do get to the track.
-The sidewalls I noticed are STIFF
The construction of the tire was different enough that I backed off the rebound and added in some compression in the back. Front, there isn't so much I can do but the front end feels fine to me. The tires ride better over bumps than PPs but I really haven't pushed them yet to get a definitive answer yet.
When they get more miles on them I'll report back but I'm questioning the side's compounds and how they'll hold up. I've heard that they vaporize on the track and if that's the case, they'll be half-done on the sides after the trackday compared to PP's which held up great.
Will these be the new standard? Only time will tell.
-Randy