Tyre size 235/65 R18
Find 235/65 R18 Tyres
Free guidance for 235/65 R18 tyres. Larger SUVs and 4x4s. Always confirm fitment on your tyre sidewall.
Tyre Size Checker
Enter a UK tyre size such as 205/55 R16 91V to decode the width, profile, rim, load index and speed rating.
Find your tyre size on the sidewall, the driver's door frame, fuel flap or vehicle handbook.
- This tyre size may be incomplete. A full tyre size often looks like 205/55 R16 91V. Check your tyre sidewall for the load index and speed rating.
What 235/65 R18 means
235 is the section width in millimetres. 65 is the profile (sidewall height as a percentage of the width). R is radial construction. 18 is the wheel rim diameter in inches.
A full tyre size also includes a load index and speed rating, e.g. 235/65 R18 91V. The load index maps to a maximum weight per tyre, and the speed rating maps to a maximum speed at full load.
Where 235/65 R18 is commonly fitted
Larger SUVs and 4x4s.
Even when a tyre size is common, the specific tyre that's right for your vehicle depends on the load index, speed rating, and sometimes whether the original equipment is run-flat or EV-rated. Always confirm with your tyre sidewall, vehicle handbook or a qualified UK tyre fitter before fitting.
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You can find this on your tyre sidewall.
This tyre size may be incomplete. A full tyre size often looks like 205/55 R16 91V. Check your tyre sidewall for the load index and speed rating.
Step 1 of 7 — Start
What to check before fitting
- Confirm the size on your tyre sidewall
- Match or exceed the original load index and speed rating
- Check the EU tyre label for wet grip, fuel and noise
- Pick the right type — summer, all-season or winter
- Fit as a full set or at least a matched pair on the same axle
Frequently asked questions
Quick answers about UK tyre fitment, MOT rules and seasonal options.
Is 235/65 R18 available as a winter tyre?
Most UK fitments — including 235/65 R18 — are produced as winter tyres by Continental, Michelin, Bridgestone, Pirelli, Goodyear and others. Winter tyres are stamped with the 3PMSF symbol and stay flexible below 7°C.
Are summer, all-season and winter tyres available in 235/65 R18?
Most popular UK sizes — including 235/65 R18 — are available as summer, all-season and winter tyres. For UK conditions, all-season tyres with the 3PMSF symbol suit drivers who want a single set year-round.
What does 235/65 R18 mean?
235/65 R18 reads as: 235mm tread width, sidewall height 65% of width (≈ 153mm sidewall), and a 18-inch rim diameter. A complete size includes a load index and speed rating, e.g. 235/65 R18 91V.
What speed rating should I look for on 235/65 R18?
Speed rating is a single letter at the end of the size — H (210 km/h), V (240 km/h), W (270 km/h), Y (300 km/h). Use the original specification for your car as the minimum.
Can I read 235/65 R18 backwards from a wheel listing?
If you only know the wheel — for example a 18-inch alloy with width X — the tyre size is usually engraved or labelled separately. Don't assume from rim diameter alone; many cars run different widths and profiles on the same rim size.
Tyre sizes related to 235/65 R18
Same rim, similar width or profile — common alternatives UK drivers compare with 235/65 R18.
Tyre Finder UK provides general tyre guidance only. We do not guarantee tyre fitment, local stock, prices or fitting availability. Always confirm your tyre size, load rating, speed rating and vehicle requirements using your current tyre sidewall, vehicle handbook, manufacturer guidance or a qualified tyre fitter before fitting.