Pirelli

I didn't buy a 40mm endurance tire expecting them to be fast but these things are brutally slower than the Conti All Seasons I traded them for. Only inflated up to about 38mm so for only an extra 3mm and all that extra rolling resistance and weight, I think going back to 35 All Seasons may be in my future. That said, these things might go great on my fully commuter rig if I want a slick for the city since they feel bomb proof and can't be much slower than the Cinturato M knobbies I have on it now.

I've tried these, maxxis, specialized, challenge, and panaracer. The pirelli rubber is hands down the best rubber you can get. It hooks up in the wet, it is happy in the dry, it doesn't care about the cold and will hook up (the best of everything I've tried) in the snow. The semi slick middle does roll really quickly, it's not as fast as a challenge or schwalbe but it's within 5% in the real world. The shoulder knobs are amazing and do help paddle through mud. The only "bad" thing of these tires is that they have a thick sidewall. You'll never puncture but they don't feel like riding on silk. Also the lifetime of these tires is ridiculous, I ran one set until the rear tire went bald, it took two years and about 1500 miles riding year round in New England. I love these things.

Pirelli, please make a racey version with thin sidewalls and change NOTHING else.

I purchased these tubes based on articles I've read on reducing tube/tire weight to improve bike performance and a good GCN episode on YouTube. As this is the first time I've installed TPU tubes I induced small leaks during installation. I ordered a repair kit and closely following the instructions I got a good seal and have had no problem with the tube since I go it reinstalled. I have put at least 500 miles on the new tires (Conti GP5000S TR) and tubes and have noticed significant performance improvement especially going down hill. My heavier friends no longer pass me going down hills which I attribute to the improved aerodynamics and rolling performance. These tubes definitely contribute to this improvement and I would buy them again.

When I was younger I would ride bomb proof wheels like heavy box rims with armored tires. Now that I'm old and slow I ride light weight carbon aero wheels with armor tires for training. These are the best I've found in the tubeless category. I hope they continue this line because there is nothing better. They are great for training and commuting, I've logged tons of miles on them and have never had a cut or puncture. It's like having a thimble on your wheels if the thimbles were tacky, grippy, plush, and hug corners like Motel Kamzoil hugged his wife. You'll gain more confidence in corners every time you lean in.