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145/40 R17 Tires

Everything we know about the 145/40 R17 tire size: 2 owner reviews covering 12,000 miles of driving, and EU label data for the tires you can actually buy in it.

  • 2owner reviews
  • 12,000 milescovered on them
145/40 R17 To scale, mm
Ø 548 145 58 17" 58

What does 145/40 R17 mean?

A 145/40 R17 tire is 145 mm wide, its sidewall is 40% of that width (58 mm) tall, and it fits a 17 inch wheel. That gives an overall diameter of roughly 548 mm.

145/40 R17 nominal dimensions
Section width145 mm
Sidewall height58 mm
Rim diameter17" (432 mm)
Overall diameter≈ 548 mm
Circumference≈ 1,721 mm
Revolutions per km≈ 581
Revolutions per mile≈ 935

Also written as

145/40R17 145/40 ZR17 145-40-17 145 40 17

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 145/40 R17 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 145/40 R17 tires

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

59%
Continental Sport Contact 145/40 R17 BMW Z3 12,000 miles April 13, 2017
Dry grip is quite startling but sudden break away is a problem. My car is light and powerful but in the wet the tire still performs well. Wear is OK(ish) approx 12k of mixed cruising and hard driving. These have performed better for grip than the Perelli P6000 that were fitted before but obviously wear rates are higher. The side walls are softer on the Contis too which took a little getting used too.
53%
Michelin Pilot Street 145/40 R17 Yamaha R3 October 4, 2016
Quite good if you want to ride in nice weather. Get rid of these tires if you'd like to ride during wet days as well! I ride on r3 with these tires and I don't feel confident at all with them!
I used to ride honda 125CBR in UK for more then one year, and to be honest, the grip on smaller tires (you know how tires of 125 bikes are) was MUCH BETTER then the grip on my much wider michelin pilot tires now. I've done already about 3k KM with them and had about 4-5 situations when I nearly felt down during wet days (I have really good experience how to ride in rain from UK but these horrible tires surprise me all the time).
If you want to ride just in nice weather - they're ok but still I think it's better to pay little extra to have decent tires, it can save your life, don't save money on it.
If it's possible that you will be catched by rain or you just want to ride during rainy weather - don't even think about buying this, honestly.

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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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