225/45 R18 Tyres Norwich

225/45 R18 is one of the most common tyre sizes on British roads, and this page is the plain-English version of what we tell customers on the phone: which cars run it, what the load and speed codes after it mean, how the brands compare in this size, and what to watch for. Call 07933 900901 with the size or your registration and we will quote and book you in, seven days a week.

Tyres from £40supplied and fitted, quoted by size

Same-day fittingmost sizes, while you wait

Open 7 daysMon-Sat 8-6, Sun 10-4

3-month guaranteeor 3,000 miles on workmanship

Which Cars Use 225/45 R18?

The 18-inch size on executive saloons and their sportier trims: Audi A4 and A5, BMW 3 Series in run-flat form, Mercedes C-Class, Volkswagen Passat R-Line and Arteon, Skoda Superb Sportline, Jaguar XE, Ford Mondeo ST-Line, Lexus IS and ES, Volvo S60 and the Tesla Model 3 on its standard 18-inch wheels.

If your car is on this list, check the sidewall anyway; if it is not, check the sidewall anyway. Trims and wheel options vary, and the door label settles it.

What 225/45 R18 Means

The sidewall reads 225/45 R18: a 225 mm tread, a sidewall 45 per cent as tall as it is wide (about 101 mm), radial construction and a 18-inch rim. Overall the tyre is roughly 660 mm in diameter, and the car was calibrated for that figure. Next to the size sit the load index and speed rating, covered below, and beyond them the date code that tells you how old the tyre is.

Load and Speed Ratings on 225/45 R18

Typical markings after the size are 95Y XL, 95W XL and 91W. Treat the load index as the tyre's payload rating and the speed letter as its ceiling: the car maker sets a minimum for each and you may exceed either but not undercut it. On heavier trims the label will call for the XL figure, and that is the tyre to fit even if the lighter version is cheaper.

Good to know

Which 225/45 R18 tyres suit a Tesla Model 3? An XL tyre with a 95 load index at minimum, ideally an EV-marked version built for the weight and torque and with a good rolling-resistance grade for range. We match the original specification by registration.

What to Watch For on This Size

Almost everything in this size is XL rated with a 95 load index, and it should stay that way; the heavier diesels, plug-in hybrids and the Model 3 all rely on it. Speed ratings are W or Y. BMW fitments carry the star marking and are usually run-flat, Mercedes fitments carry MO, and both ride noticeably differently on the standard version of the same tyre. EV owners should look for the EV-marked versions of the premium ranges, which are built for the extra weight.

Brands Available in 225/45 R18

Premium-led: Michelin Pilot Sport 4 and Primacy 4, Continental PremiumContact and SportContact, Goodyear Eagle F1 and EfficientGrip, Bridgestone Turanza, Pirelli Cinturato and P Zero, with Hankook Ventus, Falken Azenis, Kumho Ecsta, Nexen N'Fera and Vredestein Ultrac in the mid-range and Davanti Protoura at the budget end.

Ask for a brand by name or ask us to choose; either way you see the EU label before you commit. The brand directory explains each name, and checked part worns are a fourth option in a common size like this one.

Other 18-Inch Sizes

Sizes on the same rim diameter that are often confused with this one, each with its own page: 225/40 R18, 235/60 R18, 235/40 R18, 245/40 R18, 235/50 R18, 245/45 R18. See the full tyre size guide.

Fitting 225/45 R18 at Ber Street

Booking is a phone call: 07933 900901, the size or the registration, and a time that suits. Same-day fitting is realistic in this size. We check the other three tyres, the tracking and the brakes while the wheels are off, fit with a new valve, balance, torque correctly and dispose of the old tyre. Open Monday to Saturday 8am to 6pm and Sunday 10am to 4pm, free parking.

How Tyre Fitting Works at Ber Street