What traction means
Traction is the grip between your tyres and the road. A bike can only brake, steer and accelerate as hard as that grip allows, and rain generally reduces it. Because a bike is narrow and relies on leaning, a loss of grip at the wrong moment tends to end in a slide.
The good news is that wet roads are very manageable if you plan for less grip and ride with a lighter touch. These tricks are about technique on the road. Clothing, mudguards and keeping kit dry are separate topics, and a rain-day overview sits elsewhere.
This is general advice. Practise in a flat, quiet place first, and wear a helmet.
Be smooth with everything
If one idea matters most, it is smoothness. The grip you have is a limited amount, and each input spends some of it. Hard braking, sharp steering and hard acceleration all spend grip at once. In the wet, spread the demands out.
- Brake in a straight line, before the bend, then release as you start to turn.
- Squeeze, do not grab. Increase the pressure gradually on both levers.
- Pedal smoothly through slippery sections; a sudden stomp on the pedals can spin the rear wheel, especially in a low gear on a steep or painted surface.
- Steer gently. Avoid sudden swerves, and make changes of direction gradual.
Brake early
Wet rims and pads need a moment to bite, and everything takes longer to stop. Plan to start slowing sooner than you would in the dry. A habit that helps is to look further ahead so you spot the stop before you need it. Leave larger gaps behind other road users. Remember that your braking control is shaped by weight transfer: hard front braking puts load on the front tyre but a slippery front can slide, so use both brakes together and let your weight settle slightly back. A little practice with front and rear brake use in a safe space teaches how each lever feels when wet.
Corner upright
In the dry, a lean can bring a fast, flowing line. In the wet, the same lean uses up grip you do not have to spare. A few ways to make cornering gentler:
- Slow down before the corner, not in it.
- Keep the bike closer to upright and lean your body slightly instead. Some riders drop the outside foot to put weight on the outer pedal, which can make the bike feel steadier.
- Take a wider, smoother line with a gentle arc.
- Keep your hands relaxed and avoid braking midway through the turn.
- Look through the corner to where you want to go.
Practising cornering technique and cornering drills in a car park before the weather turns gives you a feel for the limits.
Puddles hide things
A puddle might be a shallow film, or it might hide a pothole, a broken edge, a drain or a rock. You cannot tell from above. When it is safe, ride around, taking care not to swerve into traffic. If you cannot avoid it, slow down, keep the bike straight and upright, hold the bars with a relaxed grip and avoid braking or steering sharply until you are through. Deep or fast-flowing water, especially across a road, is not worth the risk; walk or find another route.
Also be careful near the road edge, where water, grit, glass and leaves collect, and where drain covers sit. If you must pass there, do it slowly and upright.
Read the surface
Some wet surfaces are much worse than others. Painted lines and symbols, metal covers, tram or rail tracks, polished stone, wooden boards and wet leaves are common trouble spots. Oil patches can show as a rainbow sheen, particularly at junctions and queueing points where vehicles leak. Learning to notice slippery surface clues and early road hazard spotting makes these easier to avoid. When you cannot avoid one, cross it straight, upright, without pedalling hard or braking.
Be careful with tram tracks and similar grooves in particular: cross them at as wide an angle as the traffic allows, not along them.
Tyres and pressure
The state of your tyres affects wet traction more than most things you can change cheaply. Worn or cracked tyres, or ones with embedded glass, are best replaced. Wider tyres generally have a larger contact patch and often feel steadier on wet ground. Understanding tyre tread and grip helps you choose. Use the pressure recommended by the manufacturer for your tyres and rider weight, and ask a bike shop if you are unsure. Do not guess at numbers or let air out to improvise.
Look after your rim or disc
If your brakes are rim brakes, wet wheels can squeal and delay stopping, and a dirty rim wears pads quicker. A quick wipe or light brushing of the brake early in the ride clears water. Disc brakes may also be noisy when wet, and contaminated pads need professional attention. A basic brake test before you set off, and a habit of checking brake pad wear, help you trust the brakes. Take any worry about brakes to a bike shop.
After a slide
If the wheels slip, stay calm, try not to grab the brakes harder, and look where you want to go. Small slides of a rear wheel often recover if you keep pedalling gently and keep the bike upright. A front-wheel slide is usually harder to recover. After any fall, check yourself and your bike before riding on, and stop if you are hurt.
Wet roads call for patience more than skill. Ride at a speed that leaves a margin, and if conditions feel beyond your comfort, stopping is a fair choice.