Metric tire size
215/45R17 tire size
A 215/45R17 tire is 24.6 inches (625 mm) tall and 8.5 in wide, for a 17-inch wheel, with a 3.8 in sidewall. That is the nominal size worked out from the code. Makers publish 24.4–24.9 in for real 215/45R17 tires (7 makers).
Compare 215/45R17 with other sizes
Set up for: comparing 215/45R17 with a size you're considering · Different situation?
Your current size
e.g. 265/70R17, 2657017 or 33x12.50R20
Where do I find my size?
It's on the tire sidewall, e.g. P265/70R17 115T, and on the tire placard sticker on the driver's door jamb (also in the owner's manual). The placard shows the size the vehicle came with; the sidewall shows what is fitted now. If they differ, use the placard as your starting point. Digits are enough here: 2657017 or 33125020.
Size you're considering
Real 215/45R17 tires: published diameters
Figures from the makers' own data books. They differ from the 24.6 in calculated figure because each tread design and construction measures slightly differently.
| Maker (data book) | Published diameter | Revs per mile | Approved wheel width | Listings |
|---|---|---|---|---|
| BFGoodrich | 24.6 in | 844 | 7–8 in | 1 |
| Falken | 24.6–24.9 in | 837–844 | 7–8 in | 5 |
| Goodyear | 24.7 in | 846–848 | 7–8 in | 3 |
| Hankook | 24.4–24.7 in | 840–851 | 7–8 in | 5 |
| Nitto | 24.61–24.76 in | — | 7–8 in | 3 |
| Toyo | 24.5–24.6 in | 843–847 | 7–8 in | 2 |
| Uniroyal | 24.6 in | 844 | 7–8 in | 1 |
Equivalent sizes on other wheels
Sizes that appear in the maker data books with a diameter within 3% of 215/45R17. Same diameter is only one part of fitting a different size.
| Wheel | Real sizes within 3% (closest first) |
|---|---|
| 15-inch | 205/60R15 , 185/65R15 , 195/65R15 |
| 16-inch | 245/45R16 , 185/60R16 , 195/55R16 |
| 17-inch | 245/40R17 , 235/40R17 , 225/45R17 |
| 18-inch | 285/30R18 , 245/35R18 , 215/40R18 |
| 20-inch | 225/30R20 |
Popular comparisons with 215/45R17
FAQ
How tall is a 215/45R17 tire?
24.6 inches (625 mm) calculated from the size code. Makers publish 24.4–24.9 in for real tires in this size; the difference comes from tread design and construction.
How do you work out the 215/45R17 diameter?
Sidewall = 215 mm × 45% = 96.8 mm. Diameter = 17 in wheel + 2 × 96.8 mm ÷ 25.4 = 24.62 in.
Is 215/45R17 a 25-inch tire?
It is about 24.6 in tall nominally, so it is close to 25 inches. Real tires in a size vary slightly by model; check the maker's spec sheet for the exact tire.
What sizes are equivalent to 215/45R17?
Real sizes within 3% of its diameter include 245/45R16 (+0.3%), 285/30R18 (+0.5%) and 225/30R20 (+2.8%). Equal diameter alone doesn't make a size suitable: wheel width, offset, clearance and load rating all matter.
How many revolutions per mile does a 215/45R17 make?
About 819 calculated from its unloaded diameter. Makers publish 837–851 revs per mile, measured under load (a loaded tire rolls on a slightly smaller radius), which is why published figures are higher.
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