188Best 305/40 R22 tires
19 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Michelin Defender LTX M/S at 95/100.
31.6″
overall diameter
12″
section width
22″
rim diameter
638.1
revs per mile
Best 305/40 R22 summer tires
7188
289
383
481
575
648
746Best 305/40 R22 all-season tires
6
195
290
384
481
672More top-rated 305/40 R22 tires
5
190
283
385
488
558Best 305/40 R22 all-terrain tires
1
186Conversion
305/40 R22 in inches
| Overall diameter | 31.6″ |
| Section width | 12″ |
| Rim diameter | 22″ |
| Sidewall height | 122 mm |
| Circumference | 99.3″ |
| Revolutions per mile | 638.1 |
The closest flotation size is 33x12.50R22 — 4.4% taller and 4.1% wider. Compare them in the calculator.
Wheels
What rims fit 305/40 R22 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
8.5″
Ideal
9.5″
Maximum
11″
Rim diameter is fixed at 22″ — only the width varies. Estimated from the 12″ section width (70–90% rule).
Fitted from the factory on rims: 22x10, 22x10.5.
Popular comparisons
Sizes often compared with 305/40 R22
Close alternatives — each opens in the tire size calculator.
Sidewall
305/40 R22 — what does it mean?
| Parameter | Meaning |
|---|---|
| 305 | The first number is the section width — 305 mm, or about 12 inches across the widest part of the tire. |
| 40 | The second number is the aspect ratio: sidewall height as a percentage of width. At 40%, the sidewall is about 122 mm tall. |
| R22 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 22-inch wheel. |