Had these in 21 inch on my A7. Generally ok with no grip or traction issues. The main issue was the known fault of the side wall splitting. One nearly new tire failed an MOT and had to be replaced. And one that still had a few mm left virtually disintegrated and could have killed me. Tried to raise the issue with Dunlop but the couldn't care less. Disgusted with their complete lack of ownership. Needless to say they were all replaced with other brands. Will never buy Dunlop again.
245/45 R21 Tires
Everything we know about the 245/45 R21 tire size: 1 owner reviews covering 0 miles of driving, and EU label data for the tires you can actually buy in it.
- 1owner reviews
- 0 milescovered on them
- 55tires made in this size
245/45 R21 EU tire label data
EU label values are declared for each individual size, so the figures here are exact for 245/45 R21 rather than a range across a model. 40 tires carry label data in this size. The most common load index is 104 (up to 900 kg per tire). Speed ratings on offer: Y (300 km/h), W (270 km/h), V (240 km/h), H (210 km/h), T (190 km/h). 17 tires in this size carry the 3PMSF severe snow marking.
A Best wet grip
11 tires in this size hold the top EU wet grip rating, class A. The highest scoring on Tire Reviews:
- Continental SportContact 7 Summer 9.7
- Michelin Pilot Sport 4 SUV Summer 9.3
- Pirelli Scorpion Winter 2 Winter 9.3
- Continental Premium Contact 6 Summer 9.1
- Yokohama Advan Sport V107 Summer 8.8
- Hankook Ventus S1 evo 3 SUV Summer 8.5
A Lowest rolling resistance
The most fuel efficient choice: 7 tires in this size reach rolling resistance class A. The highest scoring on Tire Reviews:
- Pirelli Cinturato All Season SF2 All Season 9.2
- Pirelli P Zero Summer 8.8
- Michelin Primacy 5 Energy Summer 7.9
- Continental EcoContact 7 Summer 7.6
- Goodyear Eagle Sport All Season All Season 7
- Yokohama Advan Sport EV V108 Summer
68dB Quietest tires
The quietest 245/45 R21 tires are labelled at 68 dB external noise:
- Goodyear Eagle F1 Asymmetric 6 Summer 9.7
- Continental VikingContact 8 Winter 9.2
- Goodyear Electricdrive Asymmetric 6 All Season
Label values come from the EU EPREL database and apply to the EU market versions of each tire. 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 245/45 R21 mean?
A 245/45 R21 tire is 245 mm wide, its sidewall is 45% of that width (110 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 754 mm.
| Section width | 245 mm |
|---|---|
| Sidewall height | 110 mm |
| Rim diameter | 21" (533 mm) |
| Overall diameter | ≈ 754 mm |
| Circumference | ≈ 2,368 mm |
| Revolutions per km | ≈ 422 |
| Revolutions per mile | ≈ 679 |
Also written as
245/45R21 245/45 ZR21 245-45-21 245 45 21
Figures are calculated from the nominal size. A loaded, rolling tire runs a few percent smaller, and true widths vary slightly between makes.
What cars use 245/45 R21 tires?
The cars most often running this size in our owner reviews. Each links to the best rated tires for that exact car.
What drivers say about their 245/45 R21 tires
The most recent owner reviews fitted in this size, in their own words.
Drive on 245/45 R21 tires?
Review your tires 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 tire, the size and the distance covered, and are checked by hand before publication. Test results come from independent published tire tests indexed by size, and label values from the EU EPREL database.
About the TR Score
The Tire Reviews Score rates each tire 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 Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.