192Best 265/45 R21 tires
38 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Goodyear Assurance Maxlife2 at 92/100.
30.4″
overall diameter
10.4″
section width
21″
rim diameter
663.6
revs per mile
More top-rated 265/45 R21 tires
14192
293
388
490
587
693
784
896
980
1079
12882 more rated tires in this size are listed on their brand pages.
Best 265/45 R21 summer tires
12
184
283
384
487
581
677
776
974
1070
1170
1270Best 265/45 R21 all-season tires
8
186
280
380
477
673
769
862Best 265/45 R21 winter tires
3
181
278
375Best 265/45 R21 all-terrain tires
1
189Conversion
265/45 R21 in inches
| Overall diameter | 30.4″ |
| Section width | 10.4″ |
| Rim diameter | 21″ |
| Sidewall height | 119 mm |
| Circumference | 95.5″ |
| Revolutions per mile | 663.6 |
Wheels
What rims fit 265/45 R21 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7.5″
Ideal
8.5″
Maximum
9.5″
Rim diameter is fixed at 21″ — only the width varies. Estimated from the 10.4″ section width (70–90% rule).
Fitted from the factory on rims: 21x8, 21x8.5, 21x9, 21x9.5, 21x10.
Popular comparisons
Sizes often compared with 265/45 R21
Close alternatives — each opens in the tire size calculator.
Sidewall
265/45 R21 — what does it mean?
| Parameter | Meaning |
|---|---|
| 265 | The first number is the section width — 265 mm, or about 10.4 inches across the widest part of the tire. |
| 45 | The second number is the aspect ratio: sidewall height as a percentage of width. At 45%, the sidewall is about 119 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. |