A cold, wet Monday morning is a poor time to find out your summer tyres no longer suit the road conditions. This guide to seasonal tyre refitting explains when to make the change, what to check before fitting day and how to get your vehicle back on the road without losing half a day at a garage.
For London drivers, the right timing is rarely about a single snowfall. It is about early starts, damp roads, motorway runs, school drop-offs and commuting in temperatures that can change sharply from one week to the next. A planned tyre changeover gives you more grip when you need it and helps both sets of tyres last longer.
When should you change seasonal tyres?
The usual guide is temperature, not the calendar. Winter tyres perform best once temperatures regularly sit below about 7°C. Their softer compound stays more flexible in cold weather, giving better traction, braking and control on wet, icy or slushy surfaces. Summer tyres are designed for warmer conditions and generally become the better choice when daytime temperatures are consistently above 7°C.
In practice, many drivers fit winter tyres in October or November and refit summer tyres around March or April. But it depends on your driving pattern. If you leave before dawn, travel out of London into colder parts of Hertfordshire, Bedfordshire or Essex, or drive frequently on untreated roads, changing earlier can make sense. If your car is mainly used for short urban journeys and you run quality all-season tyres, a seasonal change may not be necessary.
Do not wait for a weather warning. By then, fitting slots can be busy and your current tyres may already be struggling in low temperatures.
Guide to seasonal tyre refitting: choose the right set
Seasonal tyre refitting is straightforward only when the tyres being fitted are still safe and suitable. Before booking, check which set is stored, where it is and whether it is fitted to its own wheels or needs transferring on to your existing wheels.
A complete wheel-and-tyre set is usually the quickest option. The technician removes your current wheels and installs the seasonal set, then checks pressures and wheel fasteners. If the seasonal tyres are not mounted on wheels, the process takes longer because the tyres must be removed from one rim and fitted to another. This can still be done, but it needs the right equipment and a clear booking description.
Check the tyre size against the vehicle handbook or the sidewall of your current tyres. The width, profile and rim diameter must be approved for your vehicle. For example, a tyre marked 225/45 R17 is not interchangeable with every 17-inch tyre. Load rating and speed rating matter too, especially for SUVs, 4x4s, electric vehicles and loaded vans.
Winter tyres may have a lower speed rating than your summer set where this is permitted for the vehicle. If so, make sure you understand and observe that limit. A visible speed-rating reminder is sensible. Never assume a tyre will fit simply because it has come from a similar car.
Check tread, age and condition first
The legal minimum tread depth is 1.6mm across the central three-quarters of the tyre, around the full circumference. Legal does not always mean suitable for the season, though. Winter tyres lose much of their cold-weather advantage as tread gets low, so many drivers replace them at around 3mm to 4mm.
Look closely for uneven wear, cracks in the sidewall, bulges, nails and previous repairs. A tyre can look fine while stored but still be damaged by age, poor storage or a slow puncture. Check the manufacturing date code on the sidewall if the tyres have been stored for several years. Tyres do not have a fixed expiry date, but old rubber should be assessed carefully, particularly if it is cracked or has hardened.
If one tyre is much more worn than the others, do not simply refit it and hope for the best. A mismatched level of grip can affect braking and stability. On many vehicles, the pair with the deeper tread should be fitted to the rear axle to reduce the risk of losing rear-end grip in wet conditions. Manufacturer guidance always comes first, particularly for staggered wheel sizes and four-wheel-drive vehicles.
What to prepare before the fitter arrives
Mobile fitting is most useful when it removes disruption, not when a technician arrives and cannot access the tyres. A few minutes of preparation keeps the appointment moving.
Make sure the stored wheel set is available at the vehicle, or tell the provider if it is in a garage, basement, office car park or storage unit. Park on firm, reasonably level ground with enough room around the car for safe lifting. Avoid busy roadside positions where possible. If you are stranded after a puncture, move to a safe location first and follow normal roadside safety advice.
Let the fitter know your vehicle registration, make and model, current tyre size and the size of the seasonal tyres. Mention anything unusual: locking wheel nuts, aftermarket alloys, a lowered vehicle, run-flat tyres, a tyre pressure monitoring system, or a damaged wheel. This allows the technician to arrive with the correct tools and avoids wasted time.
Keep the locking wheel nut key in the car and know where it is. It is often in the glovebox, boot floor or tyre repair kit. Without it, standard removal may not be possible. If it has been lost, specialist locking wheel nut removal may be needed before the seasonal wheels can be fitted.
What a proper seasonal refit should include
The job is not finished when the wheels are back on. A safe refit involves checking that the tyres are suitable, fitting the wheels in the correct position, setting tyre pressures and tightening wheel bolts or nuts to the manufacturer’s specified torque.
The tyre pressure monitoring system may also need attention. Some cars automatically recognise wheel sensors after a short drive, while others need a reset through the vehicle menu. If your winter wheel set does not contain compatible sensors, a warning light may remain on. Ask about this before the changeover rather than discovering it once you are on the motorway.
After fitting, drive carefully for the first few miles. Listen for vibration, pulling or an unfamiliar noise. Check the tyre pressures again once the tyres are cold if your vehicle has been heavily loaded or if the weather changes sharply. It is also wise to recheck wheel fasteners after around 30 to 60 miles if advised by the fitter or vehicle manufacturer.
Storage affects your next tyre change
How you store the removed set has a direct effect on its condition next season. Tyres should be clean, dry and kept away from direct sunlight, heaters, fuel, solvents and electric motors that can produce ozone. Mark their previous position – front left, front right, rear left and rear right – so tyre wear can be monitored and rotation can be considered where appropriate.
Tyres stored without wheels are best kept upright and turned occasionally. Complete wheels can be stored stacked or hung on suitable racks. Do not leave them outside under a loose cover where moisture and temperature swings can take their toll.
If you do not have space at home, make a storage plan before the appointment. Carrying a full wheel set around in the boot is not practical, adds unnecessary weight and can become a safety issue in a collision.
Is seasonal refitting worth it for your driving?
Two dedicated sets cost more upfront and require storage, but they can be a good investment for drivers who cover regular mileage through changing UK weather. Each set is used for only part of the year, so wear is shared. More importantly, you get a tyre compound designed for the conditions you face.
All-season tyres are the middle ground. They are convenient for drivers who do mostly urban mileage, have limited storage and want one set all year. Their performance can be very good, but they are still a compromise: they may not match a strong summer tyre in hot conditions or a dedicated winter tyre in severe cold, snow and ice.
For regular airport runs, early-morning commuting, family travel and longer journeys beyond central London, seasonal tyres can offer useful reassurance. The decision should be based on where and when you drive, not just the forecast outside your front door.
When your changeover is due, it does not need to mean taking time off work or sitting in a waiting room. Totyy Mobile Tyres can carry out seasonal tyre refitting right at your home, workplace or other suitable location, with 24/7 support for drivers who need help outside normal garage hours. Have your tyre details and location ready, and arrange the change before cold roads turn a routine journey into a stressful one.
