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245/25 R18 Tires

Everything we know about the 245/25 R18 tire size: 1 owner reviews covering 20,000 miles of driving, and EU label data for the tires you can actually buy in it.

  • 1owner reviews
  • 20,000 milescovered on them
245/25 R18 To scale, mm
Ø 580 245 61 18" 61

What does 245/25 R18 mean?

A 245/25 R18 tire is 245 mm wide, its sidewall is 25% of that width (61 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 580 mm.

Section width245 mm
Sidewall height61 mm
Rim diameter18" (457 mm)
Overall diameter≈ 580 mm
Circumference≈ 1,821 mm
Revolutions per km≈ 549
Revolutions per mile≈ 884

Also written as

245/25R18 245/25 ZR18 245-25-18 245 25 18

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 245/25 R18 tires?

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

Opel Insignia B 1 reviews in this size

What drivers say about their 245/25 R18 tires

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

90%
Continental WinterContact TS 870 P 245/25 R18 Opel Insignia B 20,000 miles March 29, 2026
I have been using 870P for 2 years and I can honestly say this tire is excellent. The best winter tire I ever had.
Dry handling/traction excellent.
Wear is OK,
Wet handling - all good
Ice/snow- I would say the weakest part of tire. Comfort fantastic - definetely quiter than summer Bridgestone Turanza t005…
Consumption - not so big diference to summer tire.

I have them on Opel Insignia- recommend to all!

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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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