Tyre size 245/45 R17
Find 245/45 R17 Tyres
Free guidance for 245/45 R17 tyres. Performance saloons. 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 245/45 R17 means
245 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. 245/45 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 245/45 R17 is commonly fitted
Performance saloons.
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 does 245/45 R17 mean?
245/45 R17 reads as: 245mm tread width, sidewall height 45% of width (≈ 110mm sidewall), and a 17-inch rim diameter. A complete size includes a load index and speed rating, e.g. 245/45 R17 91V.
Is 245/45 R17 a common UK tyre size?
245/45 R17 is fitted on a number of UK-market cars, so most major brands stock it. Cross-check our model pages to see if your specific car uses this size.
Can I fit a different size to 245/45 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.
What load index do I need with 245/45 R17?
Load index is on the placard inside your driver's door frame. 245/45 R17 can be ordered in different load indices (e.g. 91, 94, XL/RF) — match or exceed the original specification for your car.
What do EU tyre labels show for 245/45 R17?
Every new tyre — including 245/45 R17 — carries an EU label rating fuel efficiency, wet grip and external noise. For UK driving, prioritise wet grip first.
Tyre sizes related to 245/45 R17
Same rim, similar width or profile — common alternatives UK drivers compare with 245/45 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.