Adding stiffness to bike?

supermurph09 Posts: 2,471
edited September 2013 in Road general

Over the last few months I have noticed a creaking from the bottom bracket area of my Cube Agree GTC Race. It doesnt sound like anything major (for now) but something I have also begun to notice is that my bike does not feel very stiff. Most of my rides are hilly so whilst I attempt to remain seated, particularly when I stand up I don't feel the effort I'm putting in is being translated onto the road. Is there anything I can change that may have an effect?

Would swapping the chainset provide any help, or is it just likely to be the frame that is causing this and I'm noticing it more now my riding is stronger? I'm only 77KG (6ft tall) so wouldn't consider myself a heavyweight. I should add I'm using PX 52mm Carbon Clinchers.