I've ridden about 5 hrs on the 120tpi chronical mounted on a 40mm carbon rim with an Enve carbon mountain fork and so far I am all smiles. the tire feels amazing, sucking up small chatter like a well tuned fork. 12-18" drops are still rigid but no where near as sharp as a 2.4 tire. cornering is precise and fun. Overall don't really notice the heft of this tire and even if I did I'll never ride a 2.4 on a narrow rim again when I have this Chronicle as an option