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155/55 R18 Tires

Everything we know about the 155/55 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
155/55 R18 To scale, mm
Ø 628 155 85 18" 85

What does 155/55 R18 mean?

A 155/55 R18 tire is 155 mm wide, its sidewall is 55% of that width (85 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 628 mm.

155/55 R18 nominal dimensions
Section width155 mm
Sidewall height85 mm
Rim diameter18" (457 mm)
Overall diameter≈ 628 mm
Circumference≈ 1,972 mm
Revolutions per km≈ 507
Revolutions per mile≈ 816

Also written as

155/55R18 155/55 ZR18 155-55-18 155 55 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 drivers say about their 155/55 R18 tires

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

29%
Bridgestone Turanza EL440 155/55 R18 20,000 miles August 27, 2023
This tire came with our 2021 Mazda CX30. The car seemed to handle/ride somewhat sloppily, a surprise from experiences with previous Mazda ownership.
A dealership alignment emproved the car somewhat, but although it still did not match up to my other two cars, or my previous Mazda ownership experience. At 20k+ mileage 1 tire sucked a nail, I went a local tire dealer for an evaluation/repair, and it was deemed destroyed, but replaceable for $311.00, but none were in stock. This gave me the opportunity to check internet reviews of this tire. The most respected customer reviews rate this tire at no higher than 1-1/2 stars. All other tires are rated no lower than 3. I plan to put a set of Continentals on the car and see if there's any true Mazda fun in it.

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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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