Mounted on Easton EC90SL disc wheels on my gravel bike, the 36mm tires measure 38mm wide. The weight was 440 grams on a digital scale, as I recall. Sealed up fine with two ounces of Stans. Compared to the old 35mm Kommando that I mounted tubeless on Ultegra wheels, the X Pro is more supple and the tread pattern is wider and rounder, and the blocks are slightly larger. Good mud shedding. Very happy with these tires, I have beat the heck out of them for a couple months now.