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275/35 R21 Tires

Everything we know about the 275/35 R21 tire size: 9 owner reviews covering 129,400 miles of driving, and EU label data for the tires you can actually buy in it.

  • 9owner reviews
  • 129,400 milescovered on them
  • 135tires made in this size
275/35 R21 To scale, mm
Ø 726 275 96 21" 96

275/35 R21 EU tire label data

EU label values are declared for each individual size, so the figures here are exact for 275/35 R21 rather than a range across a model. 116 tires carry label data in this size. The most common load index is 103 (up to 875 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). 42 tires in this size carry the 3PMSF severe snow marking.

A Best wet grip

49 tires in this size hold the top EU wet grip rating, class A. The highest scoring on Tire Reviews:

A Lowest rolling resistance

The most fuel efficient choice: 3 tires in this size reach rolling resistance class A. The highest scoring on Tire Reviews:

67dB Quietest tires

The quietest 275/35 R21 tires are labelled at 67 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.

What does 275/35 R21 mean?

A 275/35 R21 tire is 275 mm wide, its sidewall is 35% of that width (96 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 726 mm.

275/35 R21 nominal dimensions
Section width275 mm
Sidewall height96 mm
Rim diameter21" (533 mm)
Overall diameter≈ 726 mm
Circumference≈ 2,280 mm
Revolutions per km≈ 439
Revolutions per mile≈ 706

Also written as

275/35R21 275/35 ZR21 275-35-21 275 35 21

Figures are calculated from the nominal size. A loaded, rolling tire runs a few percent smaller, and true widths vary slightly between makes.

Comparing two sizes? Use the tire size calculator →

Every tire reviewed in 275/35 R21

The complete record, including discontinued tires and tires with too few reviews to rank, ordered by the amount of evidence. A further 5 tires have a single review each; they count toward the totals but are not listed.

All tires reviewed in 275/35 R21
Tire Season Owner rating Reviews Distance reviewed
Michelin Pilot Sport S 5 Summer 92% 2 12,000 miles
Pirelli P Zero PZ4 Replaced by Pirelli P Zero PZ5 Summer 75% 2 37,200 miles

Reviews only cover part of the market: 135 tires are made in 275/35 R21. Browse every 275/35 R21 tire →

What drivers say about their 275/35 R21 tires

The most recent owner reviews fitted in this size, in their own words.

93%
Michelin Pilot Sport S 5 275/35 R21 Audi S8 10,000 miles October 4, 2026

On an Audi S8 Plus (605hp, 750nm, 2 tons), update after c. 10.000 miles: wear is minimal (including under severe conditions this summer in France (air temp > 40°, tire temp > 60°, heavy load), handling, feedback and comfort extremely positive. The S8 is by design not the most feedback-prone car (cabin is extremely well insulated, limited noise, extremely neutral steering), and the Pilot Sport S5 helps enhancing the sportiness (steering response, front grip, braking) while maintaining the car characteristics, especially in terms of comfort. Great tire!

73%
Pirelli P Zero PZ4 275/35 R21 Tesla Model Y Perf 24,900 miles June 28, 2026
I'm very pleased with its performance, but I think it's quite sensitive. It gets damaged very quickly in potholes and such. The tire is pretty stiff.
87%
Michelin Pilot Sport 4 S 275/35 R21 Hyundai Ioniq 5 N 500 miles March 28, 2026
Went from the OEM Pirelli PZ4 HN to the Michelin PS4S M01 XL Acoustic. Didn’t actually have foam inside like the PZ4 which the installer said they do… so could explain the only downside to the tire, slightly noisier on the freeway. Otherwise it’s better in all regards. Dry and wet grip are excellent. Where the Pirelli used to loose traction in the no traction control modes in the IONIQ 5N, the Michelin just does the most minor flinch. I have done one Tarmac Rallysprint on them, and they were great there too. The better grip definitely resulted in better lap times.
If you can, get this for your IONIQ 5N, I’m not seeing a downside as they are also ment to last longer. Both are awesome but this one is just that bit better. And where I am, was easier to get than the OEM Pirelli.
No comment on wear as I just got them. Time will tell.
77%
Pirelli P Zero PZ4 275/35 R21 Hyundai Ioniq 5 N 12,300 miles March 11, 2026
This is the Hyundai IONIQ 5N spec of the tire, so XL and noise cancelling foam, plus whatever changes Pirelli do for the OEM.
I found them to be really good with a balanced spread of performance in all categories. Used them in a few tarmac Rallysprint events and had no complaints.
It’s a performance car so comfort and noise are as good as you could ask for. No complaints from me.
I have not tried anything else on this car so can’t comment if they are relatively good or bad compared to something else. I would get them again, if availability wasn’t an issue. Given that I couldn’t get them, I just got a set of PS4S, will report once they have a few miles under them. Update: what I said initially holds true, but I must say the Michelin PS4S is a better tire. On road and one Tarmac Rally later, it has better grip, in all scenarios. Been raining recently so also sampled it there too. Only downside to PS4S is a touch noisy in comparison but it has no foam, even though the supplier claimed Acustic means foam. I’m comparing the M01 XL spec here. If you can, get the Michelins.
90%
Michelin Pilot Sport S 5 275/35 R21 Audi S8 2,000 miles January 3, 2026
Audi s8+ 605hp/750nm/2 tons. The S5 (N0 version) is an excellent tire. Compared to the 4S, the S5 seems sportier, displays superior handling on dry, slightly better overall comfort, while giving the same great feedback on the wet. Maybe a tad noisier, but the s8 is a very quiet car. A great update of the already excellent 4S.
100%
Yokohama Advan Sport EV V108 275/35 R21 Tesla Model Y Perf 1,000 miles June 20, 2025
Great EV tires from Yokohama,….factory fittet pirelli tires (Tesla)wear fast ….must See how Well ,the Yokohama tires last..
55%
Pirelli P Zero 275/35 R21 Hyundai Ioniq 5 1,700 miles January 26, 2025
These come as standard on the Ioniq 5 N and I'm not that impressed with them to be honest. Had the car a couple of months and to be fair this is throughout the winter so I cant really comment on warmer temperatures but them seem pretty average especially in the wet and cold. Grip is not very inspiring in the wet and I've had better (summer) tires on other cars in the same temperatures and time of the year..

I hope they wear down quick so I can get them changed and as the lease company are paying, I'll be trying to insist on Conti's or Michelin's as replacements. In the meantime, I'll put up with them.
86%
Bridgestone Alenza 001 275/35 R21 BMW X3m40i 42,000 miles April 6, 2022
Tires lasted 20k on rear and 22k on rear (second set) and 42k on fronts. 4wd x3m40i that gets driven hard but a lot of motor way mileage.

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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.

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