245/45 R18 Tyres Norwich

Most of the cars that come to us on 245/45 R18 arrive with the same two questions: which tyre, and can you do it today. This page answers both, along with which cars use the size, what the codes after it mean and the faults this size is prone to. Quotes and bookings on 07933 900901, seven days a week, free parking at Ber Street.

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 245/45 R18?

The 18-inch size on large executive saloons and estates: BMW 5 Series in run-flat form, Mercedes E-Class, Audi A6, Jaguar XF, Lexus GS and ES, Volvo S90 and V90, Infiniti Q50 and the Genesis G80.

Wheel options change everything, so a model on this list may run a different size on its larger alloys. The door-jamb label is the reference; we will check it by registration if you prefer.

What 245/45 R18 Means

245 mm wide. 45 per cent aspect ratio, so a sidewall of about 110 mm. 18-inch wheel, radial build. Overall diameter close to 678 mm. Those are the four facts in the size, and the fourth is the reason the size is fixed for your car rather than negotiable: change it and the speedometer, the gearing and the arch clearance change with it.

Load and Speed Ratings on 245/45 R18

In this size the codes you will meet are 100Y XL, 100W XL and 96Y. They are printed on the door-jamb label for your exact car and they are the first thing we check by registration, because two identical-looking cars can need different ones. Some fitments on this size are run-flats (RSC, RFT, ROF, SSR or ZP on the sidewall); we replace those like for like unless you choose to change all four.

Good to know

Does my E-Class need MO-marked 245/45 R18 tyres? If the car came on MO tyres, the marked version is the one the car was developed around and rides as intended. The standard version is legal and safe but can feel different. We check the sidewall of what is coming off.

What to Watch For on This Size

Heavy, fast cars: a 100 XL load index is standard and the speed rating is W or Y. BMW and Mercedes fitments carry approval markings and are often run-flat, and the ride difference between the marked tyre and the standard version is real on cars this refined. Rear-drive versions wear the rears first; front-drive Volvos wear the fronts. Touring patterns with good rolling resistance make sense on company-car mileages.

Brands Available in 245/45 R18

Premium-led: Michelin Pilot Sport and Primacy, Continental PremiumContact and SportContact, Goodyear Eagle F1 and EfficientGrip Performance, Bridgestone Turanza and Potenza, Pirelli Cinturato and P Zero, with Hankook Ventus, Falken Azenis, Kumho Ecsta, Yokohama Advan, Nexen N'Fera and Vredestein Ultrac as value alternatives.

We show you the EU tyre label for each option in your size, which rates wet grip, rolling resistance and noise, so the choice between tiers is an informed one rather than a guess. See all the brands we supply and our honest guide to cheap tyres.

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, 225/45 R18, 235/60 R18, 235/40 R18, 245/40 R18, 235/50 R18. See the full tyre size guide.

Fitting 245/45 R18 at Ber Street

We are at 100-106 Ber Street, open every day with free parking, and 245/45 R18 is a size we obtain quickly, usually within a working day. Every fitting includes a new valve, balancing, correct torque and disposal, and carries our 3-month / 3,000-mile guarantee. Call 07933 900901 with the size or the registration and we will quote and book.

How Tyre Fitting Works at Ber Street