Was originally going for Pilot Alpin 5 SUV, but there were some delays when ordering so got these instead in 275/45/21 and 315/40/21 on a 2850kg car. There has been ice, snow, slush, dry and wet weather since I put these on and I must say I am impressed over how these perform. For a heavy SUV these tires feel very well, cant really compare it to anything else as this is the first winter with this car, but we have a EV SUV that weighs 2650kg with Nokian R3 and I feel the Vredesteins suit a heavier car better the Nokians. Braking and grip on snow felt pretty much the same, although I had an impression of more control with the Vredesteins when braking and trying to provoke sliding. They aren’t remarkable on ice, but rarely non studded tires are. Consumption is a bit higher than the sportcontact 6 summer tires and road noise is pretty much the same.
Will probably try the Pilot Alpin 5 due to lower rolling resistance next time.
315/40 R21 Tires
Everything we know about the 315/40 R21 tire size: 1 owner reviews covering 900 miles of driving, and EU label data for the tires you can actually buy in it.
- 1owner reviews
- 900 milescovered on them
- 104tires made in this size
315/40 R21 EU tire label data
EU label values are declared for each individual size, so the figures here are exact for 315/40 R21 rather than a range across a model. 83 tires carry label data in this size. The most common load index is 115 (up to 1,215 kg per tire). Speed ratings on offer: (Y) (301 km/h), Y (300 km/h), W (270 km/h), V (240 km/h), H (210 km/h), T (190 km/h), Q (160 km/h). 34 tires in this size carry the 3PMSF severe snow marking.
A Best wet grip
29 tires in this size hold the top EU wet grip rating, class A. The highest scoring on Tire Reviews:
- Pirelli P Zero Winter 2 Winter 9.8
- Goodyear Eagle F1 Asymmetric 6 Summer 9.7
- Michelin CrossClimate 3 Sport All Season 9.6
- Nokian Snowproof 3P Winter 9.4
- Continental Sport Contact 6 Summer 9.3
- Falken Azenis FK520 Summer 9.1
A Lowest rolling resistance
The most fuel efficient choice: 4 tires in this size reach rolling resistance class A. The highest scoring on Tire Reviews:
- Pirelli P Zero Summer 8.8
- Continental EcoContact 6 Summer 7.5
- Pirelli Scorpion Zero All Season All Season 7.1
- Pirelli P Zero E Summer
68dB Quietest tires
The quietest 315/40 R21 tires are labelled at 68 dB external noise:
- Pirelli Scorpion Zero All Season All Season 7.1
- Pirelli P Zero E Summer
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 315/40 R21 mean?
A 315/40 R21 tire is 315 mm wide, its sidewall is 40% of that width (126 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 785 mm.
| Section width | 315 mm |
|---|---|
| Sidewall height | 126 mm |
| Rim diameter | 21" (533 mm) |
| Overall diameter | ≈ 785 mm |
| Circumference | ≈ 2,467 mm |
| Revolutions per km | ≈ 405 |
| Revolutions per mile | ≈ 652 |
Also written as
315/40R21 315/40 ZR21 315-40-21 315 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 315/40 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 315/40 R21 tires
The most recent owner reviews fitted in this size, in their own words.
Drive on 315/40 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.