These Came with my MX5, and I like them very much. nice cornering, lots of grip, not quite as much in the wet though.
185/40 R15 Tires
Everything we know about the 185/40 R15 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
What does 185/40 R15 mean?
A 185/40 R15 tire is 185 mm wide, its sidewall is 40% of that width (74 mm) tall, and it fits a 15 inch wheel. That gives an overall diameter of roughly 529 mm.
| Section width | 185 mm |
|---|---|
| Sidewall height | 74 mm |
| Rim diameter | 15" (381 mm) |
| Overall diameter | ≈ 529 mm |
| Circumference | ≈ 1,662 mm |
| Revolutions per km | ≈ 602 |
| Revolutions per mile | ≈ 968 |
Also written as
185/40R15 185/40 ZR15 185-40-15 185 40 15
Figures are calculated from the nominal size. A loaded, rolling tire runs a few percent smaller, and true widths vary slightly between makes.
What cars use 185/40 R15 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 185/40 R15 tires
The most recent owner reviews fitted in this size, in their own words.
Drive on 185/40 R15 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.
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.