What IP ratings really mean — and how to ride in the rain

Sooner or later you get caught in the rain. Whether that is a non-event or an expensive mistake comes down to two things: what your scooter is actually sealed against, and how you adjust your riding for a road that has suddenly lost half its grip. The marketing word is “water resistant” — and the gap between that and “waterproof” is where scooters die. Here is how to read the rating and ride the weather. For more depth, see our guides to riding in the rain and ingress protection.

What an IP rating actually says

An IP (“Ingress Protection”) code comes from the international standard IEC 60529. The first digit rates protection against solids and dust; the second rates protection against water; and the letter X means simply that no rating was published for that criterion — so “IPX4” has a water rating but no stated dust rating. That is the whole grammar. The numbers that follow are where the real meaning lives.

IPX4, IPX5, IPX7 in plain English

One trap to know: water ratings are not cumulative beyond IPX6. A device that passes IPX7 immersion is not necessarily protected against IPX5/IPX6 jets, so a higher second digit is not automatically “better in the rain.” And on the first digit, IP6X is fully dust-tight while IP5X is only “dust-protected” — which is why so many scooters carry IP54: dust-protected, and splash-resistant.

No scooter is truly waterproof

This is the part the spec sheet will not say plainly: no e-scooter is genuinely waterproof — even high-rated models only tolerate brief exposure, and none is designed to travel underwater. Worse, most scooters have no rating at all: in a review of over 200 models, about two-thirds carried no IP rating, and of those that did, roughly half were IP54. And the rating is your risk budget, not an insurance policy — water damage is essentially never covered by warranty, even on IP-rated scooters. Check your spec sheet before you assume your scooter is rain-ready, and when in doubt, treat it as splash-resistant only.

Stopping and grip collapse in the wet

Even a perfectly sealed scooter has to stop on a wet road, and that is the bigger danger. The UK Highway Code states wet-weather stopping distances are at least double the dry distance, because tyres have less grip — and that ice or snow can make them ten times greater. Tread is what buys grip back: aquaplaning happens when water builds between tyre and road faster than the tread can clear it, and the risk rises sharply once tread wears below about 3 mm. The cost is measurable — Continental found braking distance 6.8 metres longer at the 1.6 mm legal-minimum tread than on a full 8 mm tread. Before a wet ride, the smartest 30 seconds you can spend is checking your tyres (more in the tyre engineering guide).

Be seen — it measurably saves you

Rain comes with grey light and spray on every windscreen around you, so being seen matters more than usual. The evidence is strong: a Danish controlled experiment found cyclists running permanent daytime lights had a 19% lower injury-accident rate than those without. Run a bright front light and a red rear, add reflective surfaces, and assume drivers cannot see you until you have proof otherwise — see our night-riding visibility guide.

The slippery bits, and after-rain care

Finally, learn the wet road’s traps. Painted road markings, metal grates and manhole covers, and wet leaves are serious slip hazards — metal surfaces become almost ice-like when wet, and they are especially treacherous for a scooter’s narrow tyres. Cross them upright, straight, and off the power. When you get home, dry the deck and stem, and let the scooter dry fully before charging. Rain is rideable — with the right rating respected and the right margin added.

Consultation