Tyre size
Best 335/30 R21 tyres
Picked for the car that run 335/30 R21 from the factory, ranked by independent test results and set for the most demanding of them, so every pick suits every car here.
- width
- 335 mm
- sidewall
- 101 mm
- diameter
- 734 mm
- rim
- 21 in
- factory ratings
- 109Y
Best tyres in 335/30 R21
Best overall
Bridgestone
Potenza Sport
Highest fit score for everyday driving on the cars that use this size.
Max performance summer · Premium · fit 76
Best in the wet
Continental
SportContact 7
Strongest wet braking and handling in independent tests.
Max performance summer · Premium · fit 73
Best performance
Michelin
Pilot Sport 4S
Most dry grip and steering response for spirited roads.
Max performance summer · Premium · fit 79
Best value
Kumho
Ecsta PS91
The highest-scoring lower-priced tyre in the same category.
Max performance summer · Value · fit 50
Best road + track
Falken
Azenis RT660
A 200-treadwear tyre for track days that still drives home.
Extreme performance (200TW) · Mid-range · fit 73
Not every tyre is made in every size. “See today’s price” opens the tyre in 335/30 R21 when the retailer stocks it, or the tyre’s page when it doesn’t. Match or beat the load index and speed rating on your placard.
Cars on 335/30 R21 from the factory
| Car | Fitment | Category it needs |
|---|---|---|
| Porsche 911 GT3 RS (992) | 335/30 ZR21 109Y XL rear · Standard 20/21-inch | Max performance summer |
The picks above are max performance summer tyres or better. A car that needs a gentler category can go lower: its own page shows how far.
335/30 R21 questions
What are the best 335/30 R21 tyres?
For the cars that use 335/30 R21 from the factory, ratio's top pick is the Bridgestone Potenza Sport, a max performance summer tyre. Best in the wet: Continental SportContact 7. Best performance: Michelin Pilot Sport 4S. Best value: Kumho Ecsta PS91. Best road + track: Falken Azenis RT660.
Which cars use 335/30 R21 tyres?
Porsche 911 GT3 RS (992) (rear). Always check the placard on your own car: wheels and tyres get changed.
How big is a 335/30 R21 tyre?
About 734 mm (28.9 in) tall overall, 335 mm wide, with a 101 mm sidewall, on an 21-inch rim.