I'm using TRINX hybrid bike with stock 700cx35c tyres brand KENDA. Using Shimano SPD pedal with running shoe. stock groupset and wheelset. installed aero bars.
I always can't catch up in group riding. Even my friend with MTB with bigger tyre can ride with road bike. I've noticed I can't go more than 35km/h. Make me tired. Shift to higher gear or lower gear can't get my proper cadance.
Riding solo also feel like my bike very heavy to pedal. Only 18km/h. I can get 22km/h on aero bars. My average speed 23km/h. Being training 30km per ride flat road. No hill in my area so I cannot train for hills.
Got any advice to get faster? Change to hollow bottom bracket? Change tyre to 700cx25c? Thanks. And why MTB can go faster than me?