After a back breaking few months on Bridgestone potenzas RE050A(run flats)on my BMW 330d, I changed over to Rainsport 2 after one of my rear runflats got punctured. I did check with my insurance AVIVA and there was no problem as long as the sizes were as for the stock car. Immediately there was a massive improvement in comfort on the rainsports and nearly 8 months later, they are still very comfortable with less road noise. Road feedback was probably 20% down from the potenzas when new, but after a few weeks the feedback improved to an extent, still about 10% down compared to the potenzas. Grip in dry is as good as the potenzas, and clearly better in the wet, able to carry faster speeds through curving roads in the wet. They seem to be wearing well, but time will tell. Overall, very satisfied with purchase, used one of the online companies who fitted the tires at home, good experience overall. Thinking of getting 4 new ones for my partner's ford focus if I can get a good deal on the net again.
240/40 R17 Tires
Everything we know about the 240/40 R17 tire size: 2 owner reviews covering 20,500 miles of driving, and EU label data for the tires you can actually buy in it.
- 2owner reviews
- 20,500 milescovered on them
What does 240/40 R17 mean?
A 240/40 R17 tire is 240 mm wide, its sidewall is 40% of that width (96 mm) tall, and it fits a 17 inch wheel. That gives an overall diameter of roughly 624 mm.
| Section width | 240 mm |
|---|---|
| Sidewall height | 96 mm |
| Rim diameter | 17" (432 mm) |
| Overall diameter | ≈ 624 mm |
| Circumference | ≈ 1,960 mm |
| Revolutions per km | ≈ 510 |
| Revolutions per mile | ≈ 821 |
Also written as
240/40R17 240/40 ZR17 240-40-17 240 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.
What cars use 240/40 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 240/40 R17 tires
The most recent owner reviews fitted in this size, in their own words.
Drive on 240/40 R17 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.