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265/50 R18 Tires

Everything we know about the 265/50 R18 tire size: 1 owner reviews covering 500 miles of driving, and EU label data for the tires you can actually buy in it.

  • 1owner reviews
  • 500 milescovered on them
  • 1tires made in this size
265/50 R18 To scale, mm
Ø 722 265 133 18" 133

What does 265/50 R18 mean?

A 265/50 R18 tire is 265 mm wide, its sidewall is 50% of that width (133 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 722 mm.

265/50 R18 nominal dimensions
Section width265 mm
Sidewall height133 mm
Rim diameter18" (457 mm)
Overall diameter≈ 722 mm
Circumference≈ 2,269 mm
Revolutions per km≈ 441
Revolutions per mile≈ 709

Also written as

265/50R18 265/50 ZR18 265-50-18 265 50 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 265/50 R18 tires?

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

What drivers say about their 265/50 R18 tires

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

83%
Atlas Force UHP 265/50 R18 Porsche BOXSTER 2.7 500 miles November 11, 2026

I bought these tires because I wanted to keep within the specs that Porsche has for the 2005 Boxster everything else in the size which was a 265 4018 was twice as much. I paid $87 for the rear and they’re staggered 235 4018s upfront I paid $75 a piece for those I had continental DSW‘s for six years on this vehicle and I needed to make a change because I could not afford a set of the continental DSW‘s

Having said that I’m not disappointed with the way they drive taking a turn in the continental I was able to go a little bit faster, there is give in the sidewall at higher speeds, but this vehicle is not about high speed. It’s about cornering and the tire is smooth it grips and punches way above its price. I’ve only put 500 miles on them, but I am very happy with the performance and would do it again. I was really worried that I would feel a major difference. but after watching the review on this website, I was encouraged and took the plunge. I’m very pleased

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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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