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230/45 R18 Tires

Everything we know about the 230/45 R18 tire size: 1 owner reviews covering 5,000 miles of driving, and EU label data for the tires you can actually buy in it.

  • 1owner reviews
  • 5,000 milescovered on them
230/45 R18 To scale, mm
Ø 664 230 104 18" 104

What does 230/45 R18 mean?

A 230/45 R18 tire is 230 mm wide, its sidewall is 45% of that width (104 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 664 mm.

230/45 R18 nominal dimensions
Section width230 mm
Sidewall height104 mm
Rim diameter18" (457 mm)
Overall diameter≈ 664 mm
Circumference≈ 2,087 mm
Revolutions per km≈ 479
Revolutions per mile≈ 771

Also written as

230/45R18 230/45 ZR18 230-45-18 230 45 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 230/45 R18 tires

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

61%
Nexen WinGuard Sport 2 230/45 R18 Tesla Model 3 5,000 miles December 23, 2019
Bought these tires because they were cheaper compared to other Ultra High Performance tires (Michelin PS4S, Pirreli Sotozzero, Vrendstein Wintrac). We don't get much snow and I thought for 3 months these will be fine until I switch to my normal summer tires. I have a 450HP all wheel drive electric car.

Turns out, the tires have weak lateral sidewalls and as such handling on my car suffers a lot (and I like a sporty drive). A lot of fine dust rubber from the rear tires ends up on the car's paint and glues on to it - something I didn't expect would happen and washing this dust from the paint is very difficult to do. Tires are also a bit noisy. Decent tires but wouldn't buy again.

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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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