Short answer: Start with the code on your existing sidewall (something like 205/55 R16 91V). That gives you the size, the load index and the speed rating, and those three things are fixed. After that you’re choosing between season type, wet grip rating and price tier, and that’s where the real decision sits. For most UK drivers, an all season or summer tyre from a mid-range or premium brand with an A or B wet grip rating is the sensible pick.
Key takeaways
- Match your tyre size, load index and speed rating exactly, or go higher. Never lower.
- Wet grip is the rating worth paying for. Across 141 head to head tests, budget tyres needed an average of 6.1 metres more to stop in the wet than premium ones.
- The UK legal minimum tread is 1.6mm, but wet braking falls off well before that. Most of the industry replaces at 3mm.
- Check the four digit DOT date code. A “new” tyre sitting in a warehouse for six years is not really new.
- Fitting only two tyres? They belong on the rear axle, even on a front wheel drive car.
Tyres are the only part of your car touching the road, and yet most people buy them in a rush, usually after a puncture or a failed MOT. That’s how you end up with whatever the fitter had in the van. This guide walks through what actually matters, in the order it matters.
Start With the Size on Your Sidewall
Every tyre carries its specification moulded into the sidewall. Take a photo of it before you shop, because it saves a lot of squinting later. The most common size in the UK is 205/55 R16, though there are hundreds of variations.
Here’s what a typical code means:
| Marking | What it means | Example |
|---|---|---|
| 205 | Tread width in millimetres | 205mm across |
| 55 | Aspect ratio: sidewall height as a percentage of width | 55% of 205mm |
| R | Construction type (R = radial) | Radial |
| 16 | Wheel rim diameter in inches | Fits a 16 inch wheel |
| 91 | Load index: max weight per tyre | 91 = 615kg |
| V | Speed rating: max sustained speed | V = 149mph |
You can also find the correct size in your vehicle handbook or on the placard inside the driver’s door shut. Worth checking both, because some cars leave the factory with a different size front and rear (staggered fitments are common on performance cars and a few SUVs), and some have an optional alternative size listed.
One thing people miss: the fitment on your car right now might not be the fitment the manufacturer specified. Previous owners change things.
Load Index and Speed Rating: Don’t Go Lower
These two get skipped more than any other detail, and they’re the ones with insurance consequences. Fit a tyre with a load index below what your vehicle requires and you’re outside the manufacturer’s specification, which can invalidate cover if things go wrong.
The rule is simple. You can go higher, never lower.
Load index is a code, not a weight in kilos. A few common ones: 84 = 500kg, 88 = 560kg, 91 = 615kg, 94 = 670kg, 98 = 750kg. Multiply by four for the total the set can carry.
Speed rating works the same way:
| Symbol | Max speed | Typically found on |
|---|---|---|
| T | 118 mph | Small hatchbacks, some vans |
| H | 130 mph | Family cars, estates |
| V | 149 mph | Larger saloons, hot hatches |
| W | 168 mph | Performance cars, some SUVs |
| Y | 186 mph | High performance |
You’ll also see XL or Reinforced on some sidewalls, meaning the tyre carries more load at a higher pressure. Heavier cars often need it. Newer electric vehicles increasingly specify HL (heavy load), which sits above XL again. If your car came on XL or HL, replace like for like.
How to Read the Tyre Label
Every new tyre sold in the UK comes with a standardised label, updated in May 2021 under Regulation (EU) 2020/740 and still used across Great Britain after Brexit. It rates three things:
- Fuel efficiency (A to E): measures rolling resistance. Tyres account for roughly 20% of a vehicle’s fuel consumption, so this isn’t trivial. Goodyear puts the span between the best and worst historic grades at up to 7.5%, or more than 6 litres of fuel per 1,000km, though they’re clear that pressure, weight and driving style all move the number.
- Wet grip (A to E): wet braking performance. This is the one to prioritise in a country where it rains as much as ours.
- External noise (A to C): rolling noise measured outside the car, not inside it.
The current label also carries a QR code linking to the EU product database, plus two pictograms: the three peak mountain snowflake (3PMSF) for severe snow performance, and an ice grip symbol for passenger car tyres.
What the label doesn’t tell you is dry braking, steering feel, aquaplaning resistance or how long the tyre will last. For that you want independent test results, and Tyre Reviews is the most useful free resource in the UK for this.
Summer, Winter or All Season Tyres for UK Roads
The dividing line is temperature, not the calendar. Around 7°C, summer tyre compounds start to stiffen and lose grip, while winter and all season compounds stay flexible.
| Type | Works best | Suits |
|---|---|---|
| Summer | Above 7°C, wet or dry | South of England, garaged second cars, drivers who prioritise dry grip |
| All season (3PMSF marked) | Roughly -10°C to +30°C | Most UK drivers, especially anyone without space to store a second set |
| Winter | Below 7°C, snow and ice | Scotland, the Pennines, rural roads that get gritted late or not at all |
Michelin rates 3PMSF marked all season tyres for use from about -10°C up to +30°C, which covers nearly everything a normal British year throws at you. The trade-off is real though: above 7°C an all season tyre will have a slightly longer braking distance than a proper summer tyre, wet or dry.
Look for the 3PMSF snowflake rather than just M+S (mud and snow). M+S is a self-declared marking with no test behind it. The snowflake means the tyre passed a standardised snow traction test.
If your driving is mostly urban and you rarely see snow, all season tyres are the low-effort answer. Our guide to how UK weather affects your tyres goes into the seasonal side in more detail.
Budget, Mid-Range or Premium: What the Data Shows
This is where opinions get loud and evidence gets thin, so here are actual numbers. Tyre Reviews analysed 574 independent tests covering 7,555 individual tyre results, only counting tests where different price tiers ran on the same car, same day, same track.
| Measure | Premium | Mid-range | Budget |
|---|---|---|---|
| Wet braking (from 80 km/h) | 41.7m | 42m | 47.8m |
| Dry braking | 38.1m | 39.2m | 39.8m |
| Snow braking | 24.8m | 25.2m | 32.5m |
| Wear life | 43,990 km | 39,369 km | 38,652 km |
| Share of test wins | 88% | 11% | 0.3% |
The dry gap is small, about 1.7 metres. The wet gap is 6.1 metres, which is roughly a car and a half. And the snow gap is enormous, because cheap compounds harden in the cold.
The interesting finding isn’t “premium wins”, it’s that mid-range is the value sweet spot. Mid-range tyres take an average test position of 10.5 against premium’s 4.4, and finish top three in 17.9% of tests. They deliver most of the safety performance for noticeably less money. Brands like Hankook, Falken, Uniroyal and Kumho sit in this bracket.
Budget tyres are legal and roadworthy. They’re just consistently last, and in 3 of 14 wear tests they actually cost more per kilometre than premium tyres because they wore out so much faster. False economy, in other words.
Match the Tyre to How You Actually Drive
Ratings only take you so far. A few situations that change the answer:
High mileage motorway driving. Prioritise low rolling resistance (A or B fuel rating) and noise. You’ll feel a quiet tyre every day.
Mostly short urban trips. Wet grip and wear life matter more than fuel efficiency. Kerbing damage is your main enemy, so a tough sidewall helps.
Electric vehicles. EVs are heavier and deliver full torque instantly, so they chew through tyres faster than a comparable petrol car. Check whether yours specifies XL or HL and don’t drop below it. Rolling resistance also matters more here, since an electric powertrain is around 85 to 95% efficient and has very few other places to waste energy. Many EV-specific tyres are foam-lined inside to cut road noise, which becomes obvious once there’s no engine masking it.
Vans and towing. You’ll usually need a C marked commercial tyre with a reinforced casing and a higher load index.
Run-flats. Only fit these if your car has a tyre pressure monitoring system. They let you drive on after a puncture, typically up to 50 miles at reduced speed, but they ride firmer and cost more.
You’ll also see manufacturer markings like MO (Mercedes), AO (Audi), a star (BMW) or TES (Tesla). These are versions tuned for that specific car. Not mandatory, but usually a good default if you’re replacing all four.
Check the Age Before You Buy
Rubber ages whether you drive on it or not. Every tyre carries a DOT code on one sidewall, ending in four digits: the first two are the week of manufacture, the last two the year. So 2124 means week 21 of 2024. The British Tyre Manufacturers’ Association confirms the full code is only moulded onto one side, so you may need to look at the inner face.
There’s no legal maximum age for car tyres in the UK. The 10 year ban introduced in February 2021 applies to the front axles of lorries, buses and coaches, and to every wheel on a minibus. For cars, Michelin recommends a professional inspection annually after five years and replacement by ten, whatever the tread looks like.
Ask the retailer for the date code before you commit, particularly on discounted stock or an unusual size.
On part worn tyres: I’d avoid them. They’re legal to sell if they carry a “PART WORN” marking, have at least 2mm of tread across the full width, and pass an inflation test. In practice compliance is dreadful. TyreSafe inspections found 93% of part worn dealers non-compliant, over 63% of the tyres unsafe to return to the road, and 22% aged ten years or older. The oldest they found was 29 years old. They also worked out the cost per usable millimetre of tread at £6.33 for part worns against £5.32 for new. So you’re paying more for less.
Fitting Two Tyres? They Go on the Rear
This surprises people, especially front wheel drive owners. But the logic holds regardless of which wheels are driven.
If the front loses grip first, the car understeers and pushes wide. Unnerving, mostly recoverable. If the rear loses grip first, the car oversteers and can spin, which most drivers can’t correct at speed. Michelin’s standing recommendation is that the new or least worn pair goes on the rear axle for exactly this reason, with the part worn pair moved forward.
Some fitters default to putting new tyres where the old ones came off. Say something if that happens.
While you’re at it, keep tyres matched across each axle. Mixing radial and cross-ply on the same axle is illegal under the Road Vehicles (Construction and Use) Regulations 1986, and mixing brands or tread patterns across an axle, though legal, makes handling less predictable.
When to Buy, Not Just What to Buy
The legal minimum tread depth in the UK is 1.6mm across the central three quarters of the tyre and around the full circumference. Driving below it risks a fine of up to £2,500 and three penalty points per tyre.
But legal isn’t the same as safe. MIRA testing found cars with 1.6mm of tread had up to 44% longer wet braking distances than the same cars at 3mm, which is why TyreSafe, the RAC and most manufacturers suggest replacing around 3mm. The Department for Transport recorded 190 people killed or seriously injured in 2023 in collisions where a defective tyre was a factor, up 29% on the previous year.
The 20p test takes ten seconds: insert a 20p coin into the main groove, and if you can see the outer band, get the tyre checked. Our guide on checking tread depth at home covers the gauge method too, and if you’re weighing up a damaged tyre, when to replace rather than repair walks through the repair rules.
Also worth knowing that correct pressure affects how long your new tyres last as much as the brand you chose. A tyre running 10% under-inflated wears its shoulders faster and adds rolling resistance.
Frequently Asked Questions
Do all four tyres need to match?
Not legally, beyond the radial and cross-ply rule. But matching across each axle is strongly recommended, and matching all four gives the most predictable handling.
Can I fit a different size than the original?
Only if the alternative is listed by the vehicle manufacturer. Changing size alters your speedometer reading, ride height and sometimes ABS calibration.
Are premium tyres worth it on an old car?
Mid-range is usually the better call. You get most of the wet grip benefit without paying for performance the car can’t use.
How long should a set of tyres last?
Typical UK drivers see between 20,000 and 40,000 miles depending on driving style, alignment and the tyre itself. Our guide to how long tyres last breaks down the factors.
Can I buy tyres online and have someone else fit them?
Yes. Plenty of drivers buy from Blackcircles or Amazon and book a fitter separately. Mobile fitters will supply and fit, or fit tyres you’ve already bought, at your home or workplace.
Once you’ve settled on a size and a rating, the fitting itself is straightforward. Wheel balancing, a new valve stem and correct inflation should be included as standard, and old tyres should be taken away for recycling. If you’d rather not sit in a waiting room for two hours, tyre replacement at home is worth a look, since the whole job takes about the same time on your driveway as it does at a depot.