Bike is very hard to peddle.
Hi, My Felt VR3 seems very hard to peddle since I've started riding it again. It was last serviced in May 2020. It has been ridden about 6 times since that service. The two times I rode it in the summer it was fine but since I've started riding it again in Late October it just feels extremely sluggish and very very hard work on the hills. Even a slight rise feels like a mountain forcing me to stand and peddle it never used to be like this. I changed the tyres to some Pirelli Cinturato velo which according to bicycle tyre rolling resistance website have a rolling resistance of 15.4 watts at 120 psi but nobody runs their tyres at 120 psi do they? So being as they are tubeless you are supposed to run them at 86 psi so the rolling resistance is probably closer to 18 watts. The tyres I was running before were Schwalbe one v guard with a rolling resistance of 12.2 watts could this be the reason for the downgrade in performance ? My summer bike which is a Giant Defy advanced pro 0 it has a compact 50/34 crank and a 11/32 cassette my Felt VR3 has a 46/30 crank and a 11/36 cassette and it harder up the hills than the Giant why is that ? It doesn't make sense to me. I bought it for hilly rides and it's harder so it's defeating the object of why I bought it in the first place. Any advice would be very much appreciated thankyou.