Brake Cables
Brake cables generally control the brakes on your bike, and using them for long can make them become frayed, stretched, or damaged. They can cause significant problems even if the chain or brake pads are new.
If you want to check for the cables’ wear, you will have to inspect the outer cable for any rust, kinks, or any other damage that may be visible. Rusty and stiff cables perform poorly. You may have to replace or lubricate to have them in good form.
Pedals and Grips
Check to ensure the rubber or foam material on the grips is not slippery, sticky, or showing signs of decomposing. You may also want to check if the grip is firm on the bars. Try holding the grip and rotating it to establish if it’s firmly.
There should be no cracks on the pedals, and the crank arms should not play. Any play on Crank’s arms could indicate worn-out ball bearings and may need replacement.
The bearings are dead and need to be replaced. If the play is only on one arm, it could be a loose bolt requiring tightening or replacement.
