174Best 355/25 R21 tires
5 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Pirelli Winter Sottozero 3 at 80/100.
28″
overall diameter
14″
section width
21″
rim diameter
720.6
revs per mile
Best 355/25 R21 summer tires
3174
271
370More top-rated 355/25 R21 tires
1
162Best 355/25 R21 winter tires
1
180Conversion
355/25 R21 in inches
| Overall diameter | 28″ |
| Section width | 14″ |
| Rim diameter | 21″ |
| Sidewall height | 89 mm |
| Circumference | 87.9″ |
| Revolutions per mile | 720.6 |
Wheels
What rims fit 355/25 R21 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
10″
Ideal
11″
Maximum
12.5″
Rim diameter is fixed at 21″ — only the width varies. Estimated from the 14″ section width (70–90% rule).
Fitted from the factory on rims: 21x13, 21x13.5.
Sidewall
355/25 R21 — what does it mean?
| Parameter | Meaning |
|---|---|
| 355 | The first number is the section width — 355 mm, or about 14 inches across the widest part of the tire. |
| 25 | The second number is the aspect ratio: sidewall height as a percentage of width. At 25%, the sidewall is about 89 mm tall. |
| R21 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 21-inch wheel. |