After a bit of a miscommunication at my last tyre change where I wanted the regular homologated road-going Pirelli Supercorsa Pro tyres fitted to my bike (ala. the same type of tyres that the Triumph Daytona 675 gets fitted with as stock), instead the tyre guys fitted me the Special Compound (SC#) variety. Brief nomenclature lesson: The SC version of Supercorsa Pro tyres are the same tyres that are used in Superstock/Supersport racing in various championships. They have 4 varieties: SC0 - Qualifying Tyre SC1 - Soft SC2 - Medium-Soft SC3 - Medium The tyre guys fitted me an SC1 front, and an SC2 rear. In short, they are about the stickiest possible road-legal rubber available. They are also not what I really wanted to have fitted to the bike, even for the somewhat aggressive road riding that I do, but since they're now on the bike I'll attempt to provide some feedback on what I think of them. So, after having covered maybe 500kms on these tyres on the road a few things are clear: 1) They warm up fairly quickly. Even just rolling around at town speeds for 2 minutes and the tyres are already starting to achieve a decent working temperature. After 5 minutes and they're warm enough to allow for stupid lean angles. I would imagine that like most tyres they'd need around 10 minutes to reach full working temperature, but I'm not at a race-track to make that call. In short, they warm up faster than I do. I wouldn't throw them into the nearest roundabout at full lean on a cool/cold morning, but by the third roundabout the footpegs are the limit. 2) Stable in a straight line, slight resistance to initial turn in. These characteristics would be due to the profile. In a straight line under full power with the R1 which doesn't have a steering damper fitted at the moment (broken mounting bracket) and the front tyre is near unflappable. I mean most tyres are stable in a straight line, but these are stable even when there's next to no weight on the front tyres at all, while the rear is biting into the bitumen and has to deal with regular road bumps trying to unsettle the bike, but the bike just tracks true. This stability comes at the slight cost of requiring a positive push to get the bike to tip in quickly, but the moment the bike is off the vertical the tyres change character and become super-responsive, which leads us to the next observation 3) Super nimble once you're off the vertical. I lost count of the number of times I nearly ran off the inside of corners yesterday. The bike would just fall onto its side once you tipped it off vertical, begging you to go faster to justify the rapid turn-in rate. Re-correcting was a snap. In fact, altering one's line at any point during the corner was so easy that it's like thought control. Don't quite like the line you're taking through the corner? No problems. In fact, they were crazily nimble. Through one corner I was just messing around and found I could easily make maybe 10 different steering adjustments through some corner while at lean angles on a regular road going tyre would leave you fairly committed to a singular arc and maybe one or two minor adjustments. You can drag your knee and still be making spirograph patterns with your line through a corner. 4) Grip? ...and you thought a baby's palm was sticky? I've never experienced anything like it, and it is somewhat hard to describe. I mean, it's not like a standard road going tyre slides or anything, but you can just tell that these SC tyres are holding onto the road like they've got claws. I think the best way to describe it is in the absence of movement over bumps, ripples, harsh bitumen, even when mid-corner at high lean. It's not something you notice with regular road tyres if you're used to it, but road tyres will slip slightly off the crests of bumps and ripples, and move about in a small way. This movement really isn't any big deal at all, it's natural. The difference is with the SC tyres they don't do that at all. They almost seem to consume the bump and if there's even one pebble left to hang onto, they'll hang onto it rather than moving around to find somewhere else to grip. I think that this is also why I kept running off the inside of corners. Where less sticky road rubber shears and slips as it turns as part of the regular way in which tyre rubber works on a bike when leaned over, the SC rubber is still shearing and slipping, but it holds the cornering line more strongly. To use the over-worn analogy, it really is like you're on a set of roller-coaster rails pushing you around a corner, rather than on something rubbery that's pushing you around. I'm struggling to find a good analogy to describe the feeling here, but even when not at full lean, you can just feel and know that the tyres are holding onto the road so much better. 5) Comfort. Somewhat surprisingly to me, these tyres are very comfortable. It really feels like my suspension is set to a softer, more road-friendly level, but the suspension adjusters haven't been touched. I can still have the firm sporting suspension settings that are great for aggressive riding and handling, and yet enjoy a more plush ride. This came as a great surprise to me, given that these really are race-track tyres. They really make for exceptionally comfortable real-world road riding tyres as well. Look, I'm not going to pretend that I can make full use of these tyres on the road. I don't believe in riding at 10/10ths on the road and using all available traction all the time. That sort of behavior belongs at a race-track. I still have some ~5mm wide "chicken strips" at the rear tyre's edges, which gives as an indication of the tyre profile's steepness at the ~47° peak lean that I achieve in my road riding. With Michelin Pilot Powers, that lean angle is enough to take the rear tyre right to the edge, so clearly the Supercorsa tyres are made to provide a full contact patch on the road even at extreme lean angles, whereas more road-oriented tyres will reach the edge with less lean. These tyres belong at a race-track where a quick rider can indulge in the >55° lean angles that these tyres would be more than happy to provide, and do so in complete confidence. Do I recommend these tyres? They are a sheer luxury. If you can make full use of these tyres on the road, you really need to be riding at a race-track instead. They are total overkill for road riding. On the other hand, IMO, they are the single best dry weather road-riding tyre I've ever enjoyed putting onto the bike. If I could afford to always put these tyres on my bike when road riding, I would. Given how soft they are though I wouldn't expect to get much more than 2000-2500kms out of the tyres for road riding. That makes them an expensive proposition. Still, while they last, you'll be having a total ball on these tyres. I really need to try these tyres at a race-track to fully appreciate them.