225/45 R18 Tyres in Park Royal
225 mm wide, 45% profile, for an 18-inch wheel. Fitted at our NW10 workshop, with live prices online.
225/45 R18 is an 18-inch tyre, 225 mm wide, with a sidewall 101.2 mm tall (45% of the width). We fit 225/45 R18 tyres at our Park Royal garage in NW10, with balancing, a new valve and disposal of the old tyre included. The price depends on the brand: see live prices for 225/45 R18. It is fitted to cars such as the Audi A4, BMW 3 Series and Citroen C4 Picasso / Grand C4 Picasso / C4 SpaceTourer / Grand C4 SpaceTourer.
What 225/45 R18 means
- 225: the tyre is 225 mm wide, measured across the sidewalls.
- 45: the sidewall height is 45% of the width, so 225 × 45% = 101.2 mm.
- R: radial construction. A ZR in the same place is the same size with a speed marking for over 240 km/h.
- 18: it fits an 18-inch wheel. Overall diameter is 18 × 25.4 mm plus two sidewalls: 659.7 mm.
The load index and speed rating follow the size on the sidewall (for example 91V). Replace like for like or higher, as your handbook states.
Cars that use 225/45 R18
Manufacturer and tyre-maker fitment listings give 225/45 R18 for these models, usually as one of several wheel options. The size on your own tyres, or on the placard in the door frame, is the one to match.
| Make | Model | Generation |
|---|---|---|
| Audi | A4 | B9 (2015-2024, incl. 2019 facelift) |
| BMW | 3 Series | F30 saloon, facelift (2015-2019) |
| BMW | 3 Series | G20 saloon (2019-, including 2022 facelift) |
| BMW | 4 Series | F32 Coupe, facelift (2017-2020) |
| BMW | 4 Series | G22 Coupe (2020-2024) |
| Citroen | C4 Picasso / Grand C4 Picasso / C4 SpaceTourer / Grand C4 SpaceTourer | 2nd gen (2013-2022) |
| Fiat | 500X | 334 (2015-2024, facelift 2018), incl. Cross and Urban |
| Honda | HR-V | 2nd gen RU (2015-2021) |
| Jaguar | XE | X760 (2015-2024, facelift 2019) |
| Kia | Niro | DE 1st gen Hybrid and Plug-in Hybrid (2016-2022) |
| Kia | Niro | SG2 2nd gen (2022-) |
| MINI | Aceman | J05 (2024-) |
| MINI | Countryman | R60 (2010-2016) |
| MINI | Paceman | R61 (2013-2016) |
| Mercedes-Benz | A-Class | W177 (2018-2022) |
| Mercedes-Benz | C-Class | W205 (2014-2021) |
| Mercedes-Benz | C-Class | W206 (2021-) |
| Mercedes-Benz | CLA | C118 (2019-2023) |
| Nissan | Juke | F15 facelift (2014-2019) |
| Peugeot | 3008 | T84 1st gen (2009-2016, facelift 2013) |
| SEAT | Alhambra | Mk2 (7N, 2010-2020) |
| Skoda | Octavia | Mk4 (NX, 2020-) incl. vRS |
| Volkswagen | Caddy | Mk5 / SK (2020-) |
| Volkswagen | Touran | Mk2 / 5T (2015-) |
| Volvo | V40 Cross Country | 2012-2019 |
What to look for in a 225/45 R18 tyre
- Low profile, less cushion. A 101.2 mm sidewall on an 18-inch wheel leaves little to absorb a pothole or a kerb, so check for bulges and rim damage after a hard hit, and have the wheel alignment checked if the steering pulls or the new tyres wear on one edge.
- Check the load index. Many of the SUVs, crossovers and vans on this size are heavy, and some are fitted with reinforced (XL) tyres. Match or beat the load index on the tyres you are replacing.
- Load and speed ratings. Tyre-maker listings for the cars on this size give 95V. The rating differs between cars and engines, so match the marking on your own tyres or in the handbook, or go higher.
- Winter or all-season. If you want winter or all-season tyres in 225/45 R18, the live list shows what is made in this size today; not every pattern is made in every size.
225/45 R18 tyres by price band
These are the brands we fit, by price band. Which of them make 225/45 R18, and at what price today, is on the live price list.
- Premium: Continental, Pirelli, Hankook, Yokohama, Bridgestone, Dunlop, Goodyear, Michelin
- Mid-range: Avon, Nankang, Roadstone, Kumho
- Budget: Accelera, Linglong
Prices for 225/45 R18 depend on the brand — see live fitted prices for 225/45 R18.
Book online, call 020 3886 2355 or WhatsApp 07476 586 589. We fit at Unit 4 Unimix House, Abbey Road, Park Royal, London, NW10 7TR, balancing and a new valve included.
Sizes next to 225/45 R18
Same 18-inch rim, one step wider, narrower, taller or lower.
Sizes with a similar overall diameter
These sizes are within 3% of the 659.7 mm diameter of 225/45 R18 on paper, and within 20 mm of its width. That alone does not make them approved for your car: check the handbook or the door placard, and keep one size across an axle.
| Size | Overall diameter | Difference |
|---|---|---|
| 205/55 R17 | 657.3 mm | -0.4% |
| 225/40 R19 | 662.6 mm | +0.4% |
| 225/50 R17 | 656.8 mm | -0.4% |
| 245/35 R19 | 654.1 mm | -0.8% |
| 245/40 R18 | 653.2 mm | -1.0% |
| 215/55 R17 | 668.3 mm | +1.3% |
See all tyre sizes, or read how our tyre fitting works.
Frequently asked questions
Is 225/45 R18 the same as 225/45 ZR18?
Yes, the dimensions are the same. The Z marks a tyre rated for over 240 km/h (149 mph); the exact rating is the letter after the load index, such as W or Y. Fit at least the speed rating your handbook gives for the car.
Can I fit 205/55 R17 instead of 225/45 R18?
Only if 205/55 R17 is listed for your car. On paper it is 657.3 mm tall against 659.7 mm for 225/45 R18, a 0.4% difference, so the speedometer would barely change. It also needs a 17-inch wheel instead of an 18-inch one. Wheel width, arch clearance, load index and speed rating must suit the car too, so check the handbook or the door placard, and fit one size across an axle.
How tall is a 225/45 R18 tyre?
About 659.7 mm (26.0 inches) across when new and unloaded: the 18-inch rim (457.2 mm) plus two sidewalls of 101.2 mm, which is 45% of the 225 mm width. Real tyres differ by a few millimetres between brands and patterns.
Which cars use 225/45 R18 tyres?
Fitment listings give 225/45 R18 for the Audi A4, BMW 3 Series, Citroen C4 Picasso / Grand C4 Picasso / C4 SpaceTourer / Grand C4 SpaceTourer, Fiat 500X, Honda HR-V and Jaguar XE, among others. One model can use several sizes depending on its wheels, so check the sidewall of your own tyres before you book.
Same-Day Tyre Fitting & Walk-Ins Welcome
New tyres fitted while you wait, plus puncture repairs, wheel balancing and battery replacement at our Park Royal workshop. No appointment needed for tyres, just call in.