Why Your Bike Feels Hard to Pedal

If your bike feels harder to ride than it used to, or just never goes as fast as it should for the effort you put in, there's usually a straightforward mechanical reason.

1. Low tyre pressure

The most common cause — and the easiest fix. Under-inflated tyres create a much larger contact patch, massively increasing rolling resistance. Check with a gauge, not by squeezing. See our tyre pressure guide.

2. Brakes dragging

A brake that isn't fully releasing applies constant resistance. Spin the wheel by hand — it should coast freely for several seconds. Read our brakes rubbing guide.

3. Worn or dry chain

A dirty, dry chain has much higher friction than a clean lubricated one. If the chain looks grey or black rather than silver, clean and lube it. Chain lubrication guide.

4. Worn bottom bracket bearings

Rotate the cranks by hand with the chain off — any roughness or grinding adds significant resistance with every pedal stroke. A worn bottom bracket needs replacing.

5. Wheel bearings worn or over-tightened

Spin wheels with the bike off the ground — they should coast freely. If they stop quickly or feel rough, bearings need attention.

6. Accumulated small friction sources

Slightly dragging brake + slightly sticky bottom bracket + slightly under-inflated tyres combine to make a bike feel noticeably slower. A service addressing all at once makes a dramatic difference.