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325/35 R21 Tires

Everything we know about the 325/35 R21 tire size: 1 owner reviews covering 4,000 miles of driving, and EU label data for the tires you can actually buy in it.

  • 1owner reviews
  • 4,000 milescovered on them
325/35 R21 To scale, mm
Ø 761 325 114 21" 114

What does 325/35 R21 mean?

A 325/35 R21 tire is 325 mm wide, its sidewall is 35% of that width (114 mm) tall, and it fits a 21 inch wheel. That gives an overall diameter of roughly 761 mm.

Section width325 mm
Sidewall height114 mm
Rim diameter21" (533 mm)
Overall diameter≈ 761 mm
Circumference≈ 2,390 mm
Revolutions per km≈ 418
Revolutions per mile≈ 673

Also written as

325/35R21 325/35 ZR21 325-35-21 325 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 →

What cars use 325/35 R21 tires?

The cars most often running this size in our owner reviews. Each links to the best rated tires for that exact car.

BMW X5 4.4i 1 reviews in this size

What drivers say about their 325/35 R21 tires

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

79%
Dynamo STREET H MU02 325/35 R21 BMW X5 4.4i 4,000 miles August 23, 2023
After 15000 miles the old Pirelli Run Flats were starting to make a distinct drone noise with 2.5-3 mm tread still across the tread , and wear was showing on chewed edges as always on my X5 , but i was reluctant to spend £1200 on four more run flats which just don’t last . ( i’ve owned 5 , X5 cars in 14 years all suffer tires wear on inside edges or chew the outside edge )
After looking at middle market online reviews i took a chance on the 4 replacement Tires which cost me £520 fitted And balanced . The tires are quiet on the road seem to drive as good as my Premium Main OEM Dealer suppled Run Flats . Tire wear is even across the tread but possibly a little less life expected judging by tread depth wear , but i can live with that because of the discount !

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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.

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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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