275/40 R21 Tires
Everything we know about the 275/40 R21 tire size: 6 owner reviews covering 54,000 miles of driving, and EU label data for the tires you can actually buy in it.
- 6owner reviews
- 54,000 milescovered on them
- 162tires made in this size
275/40 R21 EU tire label data
EU label values are declared for each individual size, so the figures here are exact for 275/40 R21 rather than a range across a model. 132 tires carry label data in this size. The most common load index is 107 (up to 975 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), Q (160 km/h). 56 tires in this size carry the 3PMSF severe snow marking.
A Best wet grip
43 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
- Goodyear Eagle F1 Asymmetric 6 Summer 9.7
- Michelin CrossClimate 3 Sport All Season 9.6
- Continental PremiumContact 7 Summer 9.5
- Continental Sport Contact 6 Summer 9.3
- Pirelli Scorpion Winter 2 Winter 9.3
A Lowest rolling resistance
The most fuel efficient choice: 9 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
- Yokohama Advan Sport V107 Summer 8.8
- Hankook iON evo SUV Summer 8.5
- Goodyear Eagle F1 Asymmetric 3 SUV Summer 8.4
- Michelin Primacy 5 Energy Summer 7.9
68dB Quietest tires
The quietest 275/40 R21 tires are labelled at 68 dB external noise:
- Yokohama Advan Sport V107 Summer 8.8
- Pirelli Scorpion Winter Winter 8.6
- Hankook iON evo SUV Summer 8.5
- Accelera Iota ST68 Summer 6.6
- Z Max Zealion Summer 5
- 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 275/40 R21 mean?
A 275/40 R21 tire is 275 mm wide, its sidewall is 40% of that width (110 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 753 mm.
| Section width | 275 mm |
|---|---|
| Sidewall height | 110 mm |
| Rim diameter | 21" (533 mm) |
| Overall diameter | ≈ 753 mm |
| Circumference | ≈ 2,367 mm |
| Revolutions per km | ≈ 422 |
| Revolutions per mile | ≈ 680 |
Also written as
275/40R21 275/40 ZR21 275-40-21 275 40 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 275/40 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 275/40 R21 tires
The most recent owner reviews fitted in this size, in their own words.
My last Volvo XC90 had 17" wheels, and I was able to put CrossClimates on it, but my driveway is at an angle, and as I reverse up it, I also need to turn. No vehicle has managed this when it's has 2+ inches of snow (including previous Skoda Superb 4x4 with the CC's). My current Volvo with the Pirelli Scorpion Verde All Season has managed to reverse up the driveway each and every time.
The car and tires were able to easily travel at 40mph on the snow this morning, met another vehicle coming the opposite direction on a single lane road, I was able to easily stop without any skidding/sliding, reverse back to a passing place, and pull out again once the vehicle passed without issue. Other day, it also easily got up to 50mph on a snow covered single track hill road on the way home, with no loss of grip, also stopped well (was testing to see how good they were!).
The Pirelli Scorpion Verde All Season doesn't grip as well in wet weather no the bends, but to be fair the XC90 isn't designed for spirited driving, in the rain, around B road bends!
Drive on 275/40 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.

