187Best 245/75 R18 tires
1 rated tire available in this size, scored on dry, wet, snow, comfort and wear. Top overall right now is the Yokohama Geolandar X CV G057 at 87/100.
32.5″
overall diameter
9.6″
section width
18″
rim diameter
621.2
revs per mile
Best 245/75 R18 summer tires
1187Conversion
245/75 R18 in inches
| Overall diameter | 32.5″ |
| Section width | 9.6″ |
| Rim diameter | 18″ |
| Sidewall height | 184 mm |
| Circumference | 102″ |
| Revolutions per mile | 621.2 |
The closest flotation size is 33x10.50R18 — 1.6% taller and 8.9% wider. Compare them in the calculator.
Wheels
What rims fit 245/75 R18 tires?
A tire fits a range of rim widths. Too narrow or too wide and the sidewall changes shape.
Minimum
7″
Ideal
7.5″
Maximum
8.5″
Rim diameter is fixed at 18″ — only the width varies. Estimated from the 9.6″ section width (70–90% rule).
Fitted from the factory on rims: 18x7.5.
Popular comparisons
Sizes often compared with 245/75 R18
Close alternatives — each opens in the tire size calculator.
Sidewall
245/75 R18 — what does it mean?
| Parameter | Meaning |
|---|---|
| 245 | The first number is the section width — 245 mm, or about 9.6 inches across the widest part of the tire. |
| 75 | The second number is the aspect ratio: sidewall height as a percentage of width. At 75%, the sidewall is about 184 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. |