I have been getting a few emails asking tire questions so I thought this thread would help other too. And if you need more help after this the dude with the Pirelli logo on his tire machine/flag/shirt/truck at the track is your next go to. And don’t flame me if my grammar is messed up, I'm late for golf. Big Bike Tire Selection 600s and bigger bikes can eat tires with reckless abandon so here is help for tire selection. Our top-level racing involvement worldwide means there is constant develop and that means for you the tires evolve and get better every 6 to 12 months. If someone tells you they rode Pirellis back in 2015 and nothing has changed that short sightedness needs to be ignored! Sure, Pirellis have a distinct feel but that's because of the patented steel belted construction. Slick Fronts The SC1 and SC2 fronts are very similar in grip but there is a distinct difference in feel. Both tires use the same carcass but because the SC2 has a harder compound it has a firmer feel. So, the key here is to try both to find your favorite. Don’t get confused on the SC2 and that it’s only for longer races or colder temperatures because it works even on tracks like Laguna in July which can get slippery. If your looking for the longest lasting of the two the SC2 gets the nod, but not by a huge margin. Then we have SC3 that we introduced in 2016. This tire has the most durability and is similar in performance to the SC2. That beginning said at Laguna 2016 WSBK a few riders tried them there, so you know the performance is good. But this SC3 compound is unique and different but it doesn’t feel harder than a SC2. So, you would think the longer lasting SC3 is going to have a harder feel than a SC2 but it doesn’t which is weird right? Slick Rears (180/60 & 200/60) When extremely cold or the track is really abrasive the track is the SC2 is the better choice. When it’s warmer and the track is less abrasive choose the SC1. Then when it’s hot and the track has low grip/is greasy the SC0 is the choice. Sure, you can use a SC1 in colder weather or abrasive track and go very fast with good wear. And a really fast rider can make a SC0 work in colder weather if the track isn’t too abrasive but your set up needs to be spot on. Or you can use a SC1 on a hot greasy track but the SC0 will be faster. Three points to hit here. The first is the SC1 is the go to tire that’s fast and works well everywhere. Second is the SC2 rear is a bit slower and it’s a long-lasting tire. Third is the SC3 which is designed for endurance and longevity but at a slower pace. So, I would suggest either the SC2 or 3 rears if you’re looking for value and want to do a lot of laps. And finally let’s be clear about the SC0. It’s never been so user friendly as it has been for the last 4 years. It is very long lasting and will take quite a few heat cycles. V2 DOT Fronts The 120 SC1 and SC2 are again very similar in grip but there is a distinct difference in feel like the slick fronts. Both tires use the same carcass but it’s different than the slick. So again, here the key here is to try both to find your favorite. Then we have the 110 SC1 front. A SC1 110 is all that is needed for these applications due to limited horsepower/speeds/G loads attained with the small bikes. A R3 or Ninja 400 weighs around 300 lbs. and in this application the 110 SC1 lasts forever with great grip and works everywhere. V2 DOT 140 & 150 Rears Both are available in either a SC1 or SC2 compound of course. The SC1 is faster than the SC2 BUT it may take a really fast rider to see the difference in lap times. The SC2 is fast, wins races, and grips great and lasts longer. So, try either one and decide. 140/70 VS 150/60 Here is the size difference in both when mounted on a 4.00 rim. The 140/70 is 140 mm wide and the diameter is 628 mm. The 150/60 is 149 mm wide and its diameter is 615 mm. The 150 has a larger contact patch while the 140 is taller. Some bikes can grind parts when using the 150 so you may want to use the 140 or raise the back end up a bit to get more cornering clearance. Other V2 DOT Rears The range is very complete with a 160 in SC1 & SC2, the 180/55 in SC2, the 180/60 in SC0, SC1, SC2, and the 200/55 in SC1 & SC2. We don't import the 200/55 SC0 as of about 4 years ago due to lack of sales. And if you’re looking at the 180/55 instead of the 180/60 forget about it and buy the 180/60, you will be happier! And of course, compound selection is the same as the slick rears. V1 DOTs (Version 1) The range is a 120 front in SC1 or SC2, with the 180/55 and 190/55 in SC2. These are current products with the old tread pattern and sizing. These are still imported here for track days/novice riders and are less expensive than the V2s. Wets These will work perfect on a damp track without standing water and with no chance of the track drying out. Have you ever seen those conditions before? Yep not very likely as it’s always going to rain more or dry out, just stick with rains or dry tires! Rains These are offered for anything from a Moto 3 to a big Superbike. The grooves are there to channel water. The compound provides chemical wet grip and this helps the tread blocks bite the tarmac while the water prevents it from overheating. Rains must have water to work and they need the correct psi to prevent the grooves from closing under load which causes the tires to hydro plane. Warmer use When the bike is off the track warmers are used to prep the tires for the next session/race and also to help control heat cycles. Harsh heat cycles cause the compound to change for the worse and you can lessen this effect by helping your tires cool down slowly with the warmers. Some riders leave them on all day and some do not, so you can decide what works best for you. But if you have 2 or 3 races in a 2-hour time frame just leave them on. It’s important to note the tire pressures and warmer for each type of tire. When it’s raining the track temp is much lower and the flying water acts to cool the tires. So, using dry tire settings doesn’t help because they will just cool down in a lap or so. And rain tires like to run well under 150F. Tire Pressure Get a good gauge then get the tires on the warmers. Once you’re ready to go out set the correct HOT psi. Then ride and when you get back check the pressures off the track. You’re looking for around a 2-psi increase. If higher or lower adjust accordingly to the correct hot psi settings listed on the attached tech sheet. And if you keep the pressures in our suggested range and find what you like you will be happy. And when it’s cold and the pavement is almost frozen there is no magic way to get your tires up to 170f with air pressure. You need to ride within the current weather conditions and deal with it. Tire Sizes Don’t get twisted up with tire size nomenclature. The tire industry allows manufacturers a fairly large range of said size. For instance, a tire marked 130/90 can be as small in width as 119mm or as big as 141mm but still be marked on the sidewall as a 130. So, don’t compare brand x 180/60 to brand y or z 180/55 or even a 180/60. Just check the tire tech data (in this thread) or for the others on line.