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135/45 R18 Tyres

Everything we know about the 135/45 R18 tyre size: 1 owner reviews covering 4,000 miles of driving, and EU label data for the tyres you can actually buy in it.

  • 1owner reviews
  • 4,000 milescovered on them
135/45 R18 To scale, mm
Ø 579 135 61 18" 61

What does 135/45 R18 mean?

A 135/45 R18 tyre is 135 mm wide, its sidewall is 45% of that width (61 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 579 mm.

Section width135 mm
Sidewall height61 mm
Rim diameter18" (457 mm)
Overall diameter≈ 579 mm
Circumference≈ 1,818 mm
Revolutions per km≈ 550
Revolutions per mile≈ 885

Also written as

135/45R18 135/45 ZR18 135-45-18 135 45 18

Figures are calculated from the nominal size. A loaded, rolling tyre runs a few percent smaller, and true widths vary slightly between makes.

Comparing two sizes? Use the tyre size calculator →

What cars use 135/45 R18 tyres?

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

Skoda Superb MK3 (2015 Present) 1 reviews in this size

What drivers say about their 135/45 R18 tyres

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

84%
Michelin Primacy 4 135/45 R18 Skoda Superb MK3 (2015 Present) 4,000 miles March 18, 2025
This is an update of my previous experience with the Michelin Primacy 4+ on my Skoda Superb series 3.

I have reported on numerous times to a Skoda dealer that the car judgers at low speakers when on turning the steering wheel and the wheels can bounce when load applied.

Dealer reports no issues with the car.

Most probably found the problem : my cars drive mode is always on ( traction control ) I go through the drive menu and turn the traction control off and the problem appears to go away.

These tyres perform very well and certainly would purchase again but although a summer tyre they are not really suited to Southern European temperatures as a permanent fitment due to tyre compounds.

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Where this data comes from

Owner ratings are submitted through the review form on this site, naming the tyre, the size and the distance covered, and are checked by hand before publication. Test results come from independent published tyre tests indexed by size, and label values from the EU EPREL database.

About the TR Score

The Tyre Reviews Score rates each tyre 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 Tyre Reviews test is run by Jonathan Benson, who has been testing tyres independently since 2007.

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