Everything we know about the 285/30 R21 tire size: 3 owner reviews covering 38,000 miles of driving, and EU label data for the tires you can actually buy in it.
EU label values are declared for each individual size, so the figures here are exact for 285/30 R21 rather than a range across a model. 46 tires carry label data in this size. The most common load index is 100 (up to 800 kg per tire). Speed ratings on offer: (Y) (301 km/h), Y (300 km/h), W (270 km/h), V (240 km/h). 12 tires in this size carry the 3PMSF severe snow marking.
23 tires in this size hold the top EU wet grip rating, class A. The highest scoring on Tire Reviews:
The most fuel efficient choice: 7 tires in this size reach rolling resistance class B. The highest scoring on Tire Reviews:
The quietest 285/30 R21 tires are labelled at 69 dB external noise:
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.
A 285/30 R21 tire is 285 mm wide, its sidewall is 30% of that width (86 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 704 mm.
| Section width | 285 mm |
|---|---|
| Sidewall height | 86 mm |
| Rim diameter | 21" (533 mm) |
| Overall diameter | ≈ 704 mm |
| Circumference | ≈ 2,213 mm |
| Revolutions per km | ≈ 452 |
| Revolutions per mile | ≈ 727 |
285/30R21 285/30 ZR21 285-30-21 285 30 21
Figures are calculated from the nominal size. A loaded, rolling tire runs a few percent smaller, and true widths vary slightly between makes.
The cars most often running this size in our owner reviews. Each links to the best rated tires for that exact car.
The most recent owner reviews fitted in this size, in their own words.
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.
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.
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.
Every test published as a Tire Reviews test is run by Jonathan Benson, who has been testing tires independently since 2007.