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235/40 R17 Tyres

Everything we know about the 235/40 R17 tyre size: 38 owner reviews covering 310,850 miles of driving, and EU label data for the tyres you can actually buy in it.

  • 38owner reviews
  • 310,850 milescovered on them
  • 61tyres made in this size
235/40 R17 To scale, mm
Ø 620 235 94 17" 94

235/40 R17 EU tyre label data

EU label values are declared for each individual size, so the figures here are exact for 235/40 R17 rather than a range across a model. 26 tyres carry label data in this size. The most common load index is 94 (up to 670 kg per tyre). Speed ratings on offer: (Y) (301 km/h), Y (300 km/h), W (270 km/h).

A Best wet grip

6 tyres in this size hold the top EU wet grip rating, class A. The highest scoring on Tyre Reviews:

B Lowest rolling resistance

The most fuel efficient choice: 2 tyres in this size reach rolling resistance class B. The highest scoring on Tyre Reviews:

67dB Quietest tyres

The quietest 235/40 R17 tyres are labelled at 67 dB external noise:

Label values come from the EU EPREL database and apply to the EU market versions of each tyre. Wet grip and rolling resistance run from class A (best) to E; noise is the measured drive-by figure. A good label is a floor, not a verdict - the tests and owner ratings above tell you far more.

What does 235/40 R17 mean?

A 235/40 R17 tyre is 235 mm wide, its sidewall is 40% of that width (94 mm) tall, and it fits a 17 inch wheel. That gives an overall diameter of roughly 620 mm.

235/40 R17 nominal dimensions
Section width235 mm
Sidewall height94 mm
Rim diameter17" (432 mm)
Overall diameter≈ 620 mm
Circumference≈ 1,947 mm
Revolutions per km≈ 514
Revolutions per mile≈ 827

Also written as

235/40R17 235/40 ZR17 235-40-17 235 40 17

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 →

Every tyre reviewed in 235/40 R17

The complete record, including discontinued tyres and tyres with too few reviews to rank, ordered by the amount of evidence. A further 24 tyres have a single review each; they count toward the totals but are not listed.

All tyres reviewed in 235/40 R17
Tyre Season Owner rating Reviews Distance reviewed
Nexen N9000 Summer 95% 2 15,200 miles
Kumho Ecsta KU31 Summer 84% 2 70,000 miles
Federal 595RSR Replaced by Federal 595RSRR Summer 80% 2 10,000 miles
Goodyear Eagle F1 Asymmetric Replaced by Goodyear Eagle F1 Asymmetric 6 Summer 78% 2 18,500 miles
Nankang AR 1 Summer 76% 2 4,000 miles
Falken FK452 Replaced by Falken Azenis FK520 Summer 71% 2 18,000 miles
Federal SS595 SUPER STEEL Summer 44% 2 10,500 miles

Reviews only cover part of the market: 61 tyres are made in 235/40 R17. Browse every 235/40 R17 tyre →

What drivers say about their 235/40 R17 tyres

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

50%
Maxxis Premitra All Season AP3 235/40 R17 Alfa Romeo 159 2.4 jtdm 200hp 28,000 miles January 8, 2026
Maxxis AP3 XL 235/40 R19 96W all-season tires (ETP00238200 identification number) I bought them 3.5 years ago, after 45,000 km the tread came off. The tire fell apart.
64%
Michelin Pilot Sport All Season 4 235/40 R17 BMW E36 M3 evo convertible 2,000 miles December 3, 2025
These are my "off season" (winter) choice for my supercharged e36 m3.
3 seasons it wears 235-35-18 PS 4S and in late fall I pop on these 17" AS.
The car doesn't get driven much but here is what I notice most (especially late fall and early spring).
They still feel sporty, they grip on cold pavement much better than the 4S... They have a considerably harsher ride and they art way more "crashy" and loud. On the good side they actually function if there's a bit of snow or slush and unlike the 4S they stay pliable and grind frozen pavement.
I can't comment on wear because they don't get much use. They do however keep my summer car functional for the months when it's not the daily.
24%
Avon ZV7 235/40 R17 Ford FOCUS ST 2.0 TDCI MK3 6,000 miles October 23, 2024
Poor wear, poor wet grip, fair dry grip.
Would not buy again
0%
Continental Sport Contact 5 235/40 R17 Mercedes Benz C63 AMG 6,000 miles April 6, 2022
Grip in dry is good. At 4mm onwards, wet grip deteriorates badly, it's dangerous, you would not go 100km/h, only 80km/h to be safe, even then, you'll prefer not to use them. Wears quickly compared to other tyres like Potenza RE002 & Re003, Pilot Sport 3 & 4, Goodyear Eagle F1 Asymmetric 3. They are soft, and stone sticks to tyres, even in basement carpark where no tyres has ever picked up anything, this tyre will stick any stone to it, as a result, i get lots of stones being flicked up and causing lots of paint chips under rear bumper, side skirt, even rear arch from front tyres flicking stone down the side of the car. Soft but not as much grip as Pilot Sport 4 which aren't soft like this and last longer. These tyres are also not comfortable at all, at 4mm and below, it's downright harsh, you feel like you're in a racecar, running over cateyes, you think you run over a sharp stone that is 5x higher.
41%
Nankang Noble Sport NS20 235/40 R17 Nissan 200sx 450 miles April 18, 2021
Bought set of 4 of these. Already in first mile on they started to shake... Then i balanced them couple time and drived 450miles. Then shaking was crazy, i checked tyres and all tyres had collapsed belts inside. Tyres had 2-3 big collapses and almost 10mm of out roundness. Only one tyre had "flat spot" collapse, 3 other was like egg shaped. Checked wheels and worst wheel had 0.2mm sideway and 0.3mm longitunal out of roundness, so wheels are perfect. Older Nankang NS2 was ok tyres (bought these 3 sets long time ago), these NS20 are so rubbish that i wont never buy _anything_ Nankang ever again. Handling was really bad, tyres flex like crazy in corners. Wet grip is really 0/10. Its better drive summer tyres in winter than these in wet summer. Plus side, these was like new at 450miles. They even shine on threads. :D Don't ever buy these!
71%
Wanli S1088 235/40 R17 Toyota MR2 mk3 Roadster 10,000 miles January 12, 2021
These tyres are great on the front only of a roadster with RWD. Nowhere else. Underrated, mostly misplaced on wrong cars and at the rear.
90%
Nankang AR 1 235/40 R17 BMW 328i Coupe 3,000 miles November 29, 2019
I bought this tires set for my E36 328i and mainly used this tires on track, sometimes daily commute to work if I feel lucky ;) So far, this tires is simple excellent on the track. Great feedback, turn in sharp. It will tell you once it is at its limit. Even if you slightly oversteer, it will grip back as long as you have are sensitive on gas pedal. I managed to cut down 3 seconds from 47s to 44s on one of the local track and around 5s from 1.31s to 1.26s on another local track (worth to mention that also my previous tires is just summer performance tires RE003 - but it is still a really good one). Once it is at the right temperature, it grips like shit on toilet. One more thing I really like from this tires is that it only take 1 2 turns to warm up, so you can go pretty much all in right from the beginning. My car is 1300kg so normally I start at 28 psi cold and usually ends up at around 34-35 psi.

Daily drive, it is super noisy. But it is semi-slick so you can't complain much about it. Tires make the whole car feels heavy - yes this tires is super heavy.

Also, I like the tread pattern design.
77%
Yokohama ADVAN Neova AD08R 235/40 R17 Subaru BRZ 10,000 miles June 21, 2019
I'm currently on my third set of AD08Rs. All 3 sets have been acquired at different stage's of life over the last 2 years so i'd assume my review on them should be fairly comprehensive for my use-case.

1'st set i got was off a friend which were relatively new with about 85% thread left on them. 2'nd set popped up really cheap as a used set at around 60% life and i got the 3'rd set new.

For daily use:
Honestly, a surprisingly well-behaved race-orientated tyre for the road. No real drama. It's perfectly acceptable in terms of conform and noise (given i run pretty stiff coilovers and exhaust isn't exactly silent). Ran RE003 Potenza's before this which is more of a road-bias performance tyre and i barely, if at all, notice any difference in comfort. Dry grip undoubtedly, is excessive for everyday road use. Trust me, i'll hardly ever have a lack of it in the dry. In the wet, they behave well too. When they're new, cruising on the highway at 100-120kmph isn't much of a big deal but of course, don't go crazy and you'll be fine. Wear on these i'd assume are fine as well if you swap between track and daily alignments. As i had a string of trackdays, i made the mistake of leaving a rather aggressive track alignment on and yet, they lasted a 6 months on a combo of daily driving and track work.

For the Track:
In terms of outright grip, they're great. Comparable to the R888Rs and anything else in the upper echelon of street-legal performance tyres, if not better. They let go very progressively and you'll hear they screech long before they give-up on you. One complaint i have tho, is feedback. Perhaps it's the specific alignment i'm running or some weird steering geometry at play but they feel numb. Going straight, mid-corner, on full lock, on breaking, they just feel numb to me. Hence, if it's your first time out on them, it'll take you sometime to learn ther limit as you'll have to go off your other senses to determined whether or not you're gonna implant yourself into that wall out of turn-14.

Aside from the lack of feedback, overall a very good tire.

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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.

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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