tireheight.comEvery 315 size
17 sizes for 16″ to 24″ wheels, with the heights and widths their makers list.
| Size | Height ″ | Listed width ″ | Tires |
|---|---|---|---|
| 315/75R16 | 34.5–34.9 ≈35 | 11.9–12.9 | 8 |
| 315/35R17 | 25.6–25.7 | 12.6 | 3 |
| 315/70R17 | 34.4–34.6 ≈34 | 12.6–12.8 | 17 |
| 315/30R18 | 25.5 | 12.6 | 7 |
| 315/35R18 | 26.6 ≈27 | 12.5 | 1 |
| 315/70R18 | 35.7 ≈36 | 13.0 | 1 |
| 315/30R19 | 26.5 ≈27 | 12.6 | 2 |
| 315/30R20 | 27.5 ≈27 | 12.6 | 9 |
| 315/35R20 | 28.7 ≈29 | 12.4–12.6 | 14 |
| 315/60R20 | 35.0 ≈35 | 12.6 | 1 |
| 315/30R21 | 28.5 ≈28 | 12.6 | 13 |
| 315/35R21 | 29.6–29.7 ≈30 | 12.6 | 5 |
| 315/40R21 | 30.9–31.0 ≈31 | 12.6 | 7 |
| 315/30R22 | 29.5 ≈30 | 12.6 | 5 |
| 315/35R22 | 30.7 ≈31 | 12.6 | 4 |
| 315/30R23 | 30.5 ≈30 | 12.6 | 2 |
| 315/50R24 | 36.5 ≈37 | 12.9 | 1 |
315 against nearby widths
Nominal widths from the size code.
Questions about 315 tires
What size is a 315 tire in inches?
12.4 inches wide (315 mm). The 315 only gives the width. Height comes from the rest of the size, so the 17 sizes of this width here run from 25.5″ to 36.5″ tall: 315/70R17 is about 34.5″, 315/75R16 is about 34.6″ and 315/35R20 is about 28.7″.
Is a 315 tire a 31?
Some are. The 315 sizes that come out about 31″ tall are 315/40R21 and 315/35R22. 315s as a whole run from 25.5″ to 36.5″ tall, so check the full size, not just the width.
How much wider is a 315 than a 305?
10 mm, or 0.39″ on paper: about 0.20″ more on each side.
What widths do tire makers list for 315 tires?
The size code gives 12.4″. The widths the makers publish for the 97 315 tires here run from 11.9″ to 13.0″. Toyo publishes overall width; BFGoodrich, Michelin and Mickey Thompson publish section width.