Im interested what pressure u use on Spinters? Im 73kg, and have GP4K on my clincher wheelset (Shamal Ultra), and find them very good grip for wet or any surface (with rolling resistance penalty). Have the same on my City bike (for 3 years now), same result (riding them in both cases 6.5 bars).RyanH wrote: ↑Mon Jun 11, 2018 3:37 pmI found Conti sprinters, which I assume use a similar compound to GP4k to be very good in the wet. Those Michelin on the other hand are probably the worst wet weather tire I've ever been on. I had mine slip for several revolutions AFTER riding through light sprinkler runoff.
On my tubular wheelset i was using Corsa G+ and wonderfull results.. I like the grip, and also very predictive when loosing grip (riding them 7.6 bars in front, 7.9 in rear).
On second tubular wheelset i decided to try Sprinters (25mm), and was experimenting with tire pressure (going from 6.5 up to 7.0 bars). I found their grip much weaker vs my other tires. And also loosing grip non predictable.. And finally month ago (10th of May), after 500 km on them, i crashed crosssing the railway (which i crossed at least 500 times, and 3 times per week in some periods this winter). The crash happened on dry weather, no wet.. (Which ended with 4 weeks plaster cast on my arm, since i had Radius Fracture, and broken helmet..)
For now they are least secure tires i ever had on my bike in last few years.. So maybe i over pump them?