What's wrong with your bike?
Pick the problem. We walk you through the fix in plain language — with clear blueprint diagrams showing the one detail that makes each job easy.
Common fixes
Something's not right? Start hereGears skip or clatter
Nine times out of ten the rear derailleur is a hair out of line with the cassette. The fix is a quarter-turn of one dial — no tools.
Fix skipping gears →Chain fallen off the ring
It looks dramatic, but it's a 30-second, tool-free fix — and we show you why it happened so it stops.
Put the chain back on →Got a flat tyre
One trick — pushing the bead into the centre of the rim — releases the tension so most tyres come off by hand.
Fix a flat →Brakes weak or rubbing
Setting pad position and cable tension is simple — and brakes are the one system you have to be able to trust.
Adjust your brakes →Tyres feel wrong
Harsh and skittery, or squishy and slow? Get a starting pressure matched to your weight, tyres and surface.
Calculate my pressure →Set up & understand your bike
The basics that make everything easierKnow your bike
Chainring, derailleur, cassette, stem… the whole bike, labelled — now fully interactive, zoom into any part.
Explore the diagram →Saddle feels wrong
Aching knees or heavy legs? Your saddle is probably too low — the most common setup mistake. Fix it in minutes.
Set saddle height →Unsure with gears
Which gear for a hill, what the two shifters do, and why not to cross-chain. Every ride gets easier.
Master your gears →Fewer breakdowns
Ten minutes a week on pressure, lube and brakes — plus the 60-second pre-ride M-check.
Learn basic care →New to modern bikes
Disc brakes, tubeless, 1x, thru-axles, e-bikes — what the shop jargon means, in plain English.
Understand modern bikes →Will that part fit?
Wheels, tyres, cassettes and rotors come in competing standards. Identify exactly what your bike uses.
Check compatibility →Each guide lists the few tools you need, then walks the job step by step. Look for the key idea box near the top — the single concept that makes the whole job make sense.
After any adjustment, test the bike somewhere safe before riding in traffic. If brakes, steering, or wheels don't feel right, stop and re-check — or take it to a shop. There's no shame in asking a mechanic.