How to Clean a Bike (and When It's Actually Worth Doing)

Put the pressure washer down

Start with the bike in a stand or upside down on a towel, with the rear wheel free to spin. Then leave the pressure washer in the shed. High-pressure water aimed at a hub, bottom bracket or headset drives straight past the seals, flushes the grease out, and turns a clean bike into a notchy one a few weeks later. A bucket, a soft brush and a gentle hose is genuinely all this needs.

The damage from a pressure washer never shows up on wash day. It shows up as play in a hub or a gritty-feeling headset a month later, which is why so many people never connect the two.

Degrease the drivetrain first, while the frame is still dry

This is the step order most people have backwards. Do the chain, cassette, chainrings and jockey wheels before any soap touches the frame. Dirty water runs downhill, and drivetrain grime is the dirtiest thing on the bike — clean the frame first and you will simply be doing it twice.

Degreaser on the chain, back-pedal it through a rag or a chain-cleaning box, then scrub between the sprockets and both jockey wheels. The jockey wheels are where the black paste actually accumulates, and they are the part most people never touch. Give the degreaser a minute to work, but do not let it dry on.

Keep one brush for the drivetrain and never let it near the frame or the brake rotors. Oily residue on a braking surface is a brake that does not work on the first descent.

Soap top down, rinse gently, dry properly

Warm water and bike wash or dish soap, working from the bars down to the wheels so dirty water only ever runs onto parts you have not done yet. Rinse at low pressure, top down again, and make sure every trace of degreaser is off the rims and rotors.

Then dry it, properly. Towel the frame, spin the wheels, and run the chain through a dry rag until it comes out clean. Water sitting in the chain rollers is what rusts a chain overnight — and it is the single biggest reason washing before a dry spell beats washing before a wet one.

Re-lube, or you have made things worse

A washed chain is a bare chain, and bare is worse than dirty. If you wash a bike and put it away without lubing it, you have removed the protection and left the metal exposed — that chain will be rusty and noisy before your next ride.

One drop per roller, all the way round, back-pedal to work it in, then wipe every bit of it off the outside. Lube belongs inside the rollers; whatever is left on the outer plates does nothing but collect grit. That wiping step is what separates a chain that stays clean for a fortnight from one that is black again in two rides.

Match the lube to the week ahead rather than the week you just had. Wet lube clings through rain and collects dirt; dry and wax lubes run clean but wash off. If the next seven days are dry, a wax or dry lube on a freshly degreased chain is about as good as a drivetrain gets.

Pick the day, not just the moment

This is the part no checklist covers. A wash is only worth the half hour if the bike gets to dry out and the fresh lube gets to stay where you put it. Washing on a Sunday evening before a wet week undoes itself on the first commute.

So work backwards from the forecast: find the first day that starts a run of two or more days without rain, and wash then. One dry afternoon wedged between two wet ones is not a wash window — it is a wasted evening.

The exception is road salt. If you have ridden a wet road below about 38°F, there is salt or brine on the bike, and salt keeps eating alloy and bolts long after the bike looks dry. That one does not get to wait for a convenient day — rinse it off now, and re-lube when the weather turns.

How often is often enough

By the calendar is the wrong unit. A bike ridden 300 dry miles is cleaner than one ridden 20 miles in the rain, because it is the water off the road — carrying grit — that does the damage. Grit on a lubed chain is a grinding paste, which is why a wet-weather chain wears out in a fraction of the miles a dry one manages.

A workable rule: degrease after about three wet rides, after roughly 300 dry miles, or immediately after anything salted. Between those, wiping the chain with a dry rag after a wet ride buys you most of the benefit for one minute of work.

The last step is the one that pays for the wash. While the bike is clean, look at it: brake pads against the wear line, tyres for cuts and embedded glass, chain for stretch. A clean bike is the only time you can actually see these things, and it is where you catch the cheap problem before it becomes the expensive one.