193Best 235/65 R18 tires
90 rated tires available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Cooper CS5 Grand Touring at 93/100.
30″
overall diameter
9.3″
section width
18″
rim diameter
671.7
revs per mile
Best 235/65 R18 all-season tires
39193
295
392
491
588
688
790
889
990
1084
1185
129327 more rated tires in this size are listed on their brand pages.
More top-rated 235/65 R18 tires
25
192
293
388
488
586
687
789
887
993
1088
1196
128213 more rated tires in this size are listed on their brand pages.
Best 235/65 R18 winter tires
12
192
291
385
488
581
678
781
898
986
1075
Best 235/65 R18 summer tires
10
187
284
390
483
587
683
783
875
971
1066Best 235/65 R18 all-terrain tires
4
189
287
383
468Conversion
235/65 R18 in inches
| Overall diameter | 30″ |
| Section width | 9.3″ |
| Rim diameter | 18″ |
| Sidewall height | 153 mm |
| Circumference | 94.3″ |
| Revolutions per mile | 671.7 |
The closest flotation size is 33x10.50R18 — 9.9% taller and 13.5% wider. Compare them in the calculator.
Wheels
What rims fit 235/65 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
6.5″
Ideal
7.5″
Maximum
8.5″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 9.3″ section width (70–90% rule).
Fitted from the factory on rims: 18x7, 18x7.5, 18x8.
Popular comparisons
Sizes often compared with 235/65 R18
Close alternatives — each opens in the tire size calculator.
Sidewall
235/65 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 235 | The first number is the section width — 235 mm, or about 9.3 inches across the widest part of the tire. |
| 65 | The second number is the aspect ratio: sidewall height as a percentage of width. At 65%, the sidewall is about 153 mm tall. |
| R18 | R means radial construction, which nearly all modern tires use. The number is the rim diameter in inches — this tire fits a 18-inch wheel. |