Tyre size 235/45 R17
Find 235/45 R17 Tyres
Free guidance for 235/45 R17 tyres. Premium saloons and hatchbacks. 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 235/45 R17 means
235 is the section width in millimetres. 45 is the profile (sidewall height as a percentage of the width). R is radial construction. 17 is the wheel rim diameter in inches.
A full tyre size also includes a load index and speed rating, e.g. 235/45 R17 91V. The load index maps to a maximum weight per tyre, and the speed rating maps to a maximum speed at full load.
Where 235/45 R17 is commonly fitted
Premium saloons and hatchbacks.
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.
What speed rating should I look for on 235/45 R17?
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.
What kind of car typically uses 235/45 R17?
17-inch rims with a 235mm tread are common on mid-size saloons, hatchbacks and small SUVs in the UK.
Where do I check 235/45 R17 is the right tyre for my car?
Compare 235/45 R17 to: (1) the size already on your sidewall, (2) the placard inside your driver's door, (3) your vehicle handbook, and ideally (4) a tyre fitter familiar with your model. Don't fit a size that doesn't match all of these.
What load index do I need with 235/45 R17?
Load index is on the placard inside your driver's door frame. 235/45 R17 can be ordered in different load indices (e.g. 91, 94, XL/RF) — match or exceed the original specification for your car.
Can I fit a different size to 235/45 R17?
Only fit a size approved for your specific car. Changing width, profile, rim, load or speed rating affects handling, braking, fuel economy and MOT. Approved alternatives are usually listed in the vehicle handbook.
Tyre sizes related to 235/45 R17
Same rim, similar width or profile — common alternatives UK drivers compare with 235/45 R17.
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.