Great tyres if you want to leave your rubber on the road. Super grippy but wear in under 5k
185/45 R17 Tyres
Everything we know about the 185/45 R17 tyre size: 1 owner reviews covering 5,000 miles of driving, and EU label data for the tyres you can actually buy in it.
- 1owner reviews
- 5,000 milescovered on them
- 5tyres made in this size
185/45 R17 EU tyre label data
EU label values are declared for each individual size, so the figures here are exact for 185/45 R17 rather than a range across a model. 4 tyres carry label data in this size. The most common load index is 78 (up to 425 kg per tyre). Speed ratings on offer: Y (300 km/h), H (210 km/h), Q (160 km/h). 1 tyres in this size carry the 3PMSF severe snow marking.
A Best wet grip
1 tyres in this size hold the top EU wet grip rating, class A. The highest scoring on Tyre Reviews:
- Giti GitiSportS2 Summer 8
68dB Quietest tyres
The quietest 185/45 R17 tyres are labelled at 68 dB external noise:
- Yokohama BluEarth AE50 Summer 7.5
Label values come from the EU EPREL database and apply to the EU market versions of each tyre. Wet grip and rolling resistance run from class A (best) to E; noise is the measured drive-by figure. A good label is a floor, not a verdict - the tests and owner ratings above tell you far more.
What does 185/45 R17 mean?
A 185/45 R17 tyre is 185 mm wide, its sidewall is 45% of that width (83 mm) tall, and it fits a 17 inch wheel. That gives an overall diameter of roughly 598 mm.
| Section width | 185 mm |
|---|---|
| Sidewall height | 83 mm |
| Rim diameter | 17" (432 mm) |
| Overall diameter | ≈ 598 mm |
| Circumference | ≈ 1,880 mm |
| Revolutions per km | ≈ 532 |
| Revolutions per mile | ≈ 856 |
Also written as
185/45R17 185/45 ZR17 185-45-17 185 45 17
Figures are calculated from the nominal size. A loaded, rolling tyre runs a few percent smaller, and true widths vary slightly between makes.
What cars use 185/45 R17 tyres?
The cars most often running this size in our owner reviews. Each links to the best rated tyres for that exact car.
What drivers say about their 185/45 R17 tyres
The most recent owner reviews fitted in this size, in their own words.
Drive on 185/45 R17 tyres?
Review your tyres and help the next driver choose. It takes about five minutes, and every review on this page came from a driver who took them.
Where this data comes from
Owner ratings are submitted through the review form on this site, naming the tyre, the size and the distance covered, and are checked by hand before publication. Test results come from independent published tyre tests indexed by size, and label values from the EU EPREL database.
About the TR Score
The Tyre Reviews Score rates each tyre out of 10 using independent test results and the full body of owner reviews, so you can check a car-specific ranking against the wider evidence.
Who does the testing
Every test published as a Tyre Reviews test is run by Jonathan Benson, who has been testing tyres independently since 2007.