Menu

240/45 R18 Tires

Everything we know about the 240/45 R18 tire size: 5 owner reviews covering 152,013 miles of driving, and EU label data for the tires you can actually buy in it.

  • 5owner reviews
  • 152,013 milescovered on them
240/45 R18 To scale, mm
Ø 673 240 108 18" 108

What does 240/45 R18 mean?

A 240/45 R18 tire is 240 mm wide, its sidewall is 45% of that width (108 mm) tall, and it fits a 18 inch wheel. That gives an overall diameter of roughly 673 mm.

240/45 R18 nominal dimensions
Section width240 mm
Sidewall height108 mm
Rim diameter18" (457 mm)
Overall diameter≈ 673 mm
Circumference≈ 2,115 mm
Revolutions per km≈ 473
Revolutions per mile≈ 761

Also written as

240/45R18 240/45 ZR18 240-45-18 240 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 cars use 240/45 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 240/45 R18 tires

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

44%
Kenda Kuavela SL 240/45 R18 Holden commodore 10 miles August 27, 2023
Dont buy these tires if you value your family's saftey extremely dangerous in the wet even front of car will slide they shouldnt be able to sell them got rid of them with 80 percent tread left waste of money
87%
Barum Bravuris 3 240/45 R18 Audi A8 D2 4.2 quattro 20,000 miles October 12, 2019
I have used Baruns for the last 60,000 miles on an Audi A8 4.2 quattro ,which replaced Dunlops at half the price and have no regrets. Also on a VW golf R32 mk 4 also 4 wheel drive and a Polo 1.6 estate.. None of these cars is driven at the limit and wear, handling and stopping have all been good enough not to warrant comment.. I have had 2 tires replaced on the Audi for wall collapse admittedly after some severe pot holes but I do wonder if the walls are a weak spot. Will continue to fit Barums where possible.
56%
Achilles ATR Sport 240/45 R18 Subaru 2008 subaru impreza sti 3 miles September 28, 2016
Wet weather? No. I have a 2008 Sti making about 250whp. In the rain it drives like it's rwd. It loses traction like no tomorrow. Now dry weather handling is quite surprising considering they at as cheap as they are. Probably would by again if I was in a money crunch and couldn't afford good high performance tires.
17%
Sumitomo Tour Plus LSW 240/45 R18 BMW 535xd 123,000 miles August 4, 2016
Worst tires ever. EVER. They were realigned every time I got my oil changed and yet my car shook constantly...and shook hard -- so hard my face skin was shaking. Miserable wastes of money. Save yourself some money and angst -- your car is meant to be enjoyed.

Drive on 240/45 R18 tires?

Review your tires and help the next driver choose. It takes about five minutes, and every review on this page came from a driver who took them.

Review Your Tires

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.

Rate your tires

My tires

Saved in this browser on this site. No account needed. Clearing browser data removes your choices.

Vehicle and size

Check the size, load and speed ratings on your vehicle. Saving a size does not confirm fitment.

Saved tires

Save tires from a tire page, test or comparison to keep them here.

Select 2–8 saved tires. Ranked comparisons require at least two shared tests.