Home › 18" tire sizes › 265/70R18
265/70R18 tire size in inches
265/70R18 is 32.61" tall and 10.43" wide, and fits a 18" rim. In flotation (inch) sizing that is roughly 32.6x10.4R18.
265/70R18 dimensions
| Measurement | Inches | Metric |
|---|---|---|
| Overall diameter (height) | 32.61" | 828 mm |
| Section width | 10.43" | 265 mm |
| Sidewall height | 7.30" | 185.5 mm |
| Rim diameter | 18" | 457.2 mm |
| Circumference | 102.4" | 2602 mm |
| Revolutions per mile | 619 | |
| Aspect ratio | 70% (sidewall is 70% of the width) | |
Drawn to scale
Among the 122 sizes for 18" wheels on this site, 265/70R18 is #79 by height (shortest: 245/35R18, tallest: 340/80R18).
What people compare 265/70R18 with
Real comparisons drivers search for, worked out against 265/70R18:
| Compared size | Height | Width | Sidewall | Speedo at true 60 |
|---|---|---|---|---|
| 275/65R18 | -0.54" (-1.66%) | +0.40" | -0.26" | 61 mph |
| 275/70R18 | +0.55" (+1.69%) | +0.40" | +0.28" | 59 mph |
| 265/65R18 | -1.05" (-3.22%) | 0.00" | -0.52" | 62 mph |
| 265/60R18 | -2.09" (-6.41%) | 0.00" | -1.04" | 64.1 mph |
| 255/70R18 | -0.55" (-1.69%) | -0.39" | -0.27" | 61 mph |
| 285/70R17 | +0.10" (+0.31%) | +0.79" | +0.55" | 59.8 mph |
| 285/65R18 | -0.02" (-0.06%) | +0.79" | -0.01" | 60 mph |
| 265/70R17 | -1.00" (-3.07%) | 0.00" | 0.00" | 61.9 mph |
How the 265/70R18 numbers are worked out
The size code reads as 265 mm section width, 70% aspect ratio, R for radial construction and 18-inch wheel.
- Sidewall = 265 × 70% = 185.5 mm = 7.30"
- Diameter = 18" + 2 × 7.30" = 32.61"
- Circumference = π × 32.61" = 102.4"
- Revs per mile = 63,360" ÷ 102.4" = 619
Sizes that can replace 265/70R18 on a 18" wheel
Within 3% of 32.61". Last column: speedometer reading at a true 60 mph.
| Size | Diameter | Width | Difference | Speedo at true 60 mph |
|---|---|---|---|---|
| 285/65R18 | 32.59" | 11.22" | -0.06% | 60 mph |
| 245/75R18 | 32.47" | 9.65" | -0.43% | 60.3 mph |
| 375/50R18 | 32.76" | 14.76" | +0.46% | 59.7 mph |
| 235/80R18 | 32.80" | 9.25" | +0.58% | 59.7 mph |
| 305/60R18 | 32.41" | 12.01" | -0.61% | 60.4 mph |
| 270/70R18 | 32.88" | 10.63" | +0.83% | 59.5 mph |
| 315/60R18 | 32.88" | 12.40" | +0.83% | 59.5 mph |
| 280/65R18 | 32.33" | 11.02" | -0.86% | 60.5 mph |
| 255/75R18 | 33.06" | 10.04" | +1.38% | 59.2 mph |
| 295/65R18 | 33.10" | 11.61" | +1.5% | 59.1 mph |
| 275/65R18 | 32.07" | 10.83" | -1.66% | 61 mph |
| 325/55R18 | 32.07" | 12.80" | -1.66% | 61 mph |
One size wider or narrower
Same height on a different wheel size
- 265/85R15 15" (+0.4%)
- 295/75R15 15" (-0.58%)
- 315/70R15 15" (-0.77%)
- 305/75R15 15" (+1.23%)
- 255/85R15 15" (-1.66%)
- 280/75R16 16" (-0.21%)
- 265/80R16 16" (+0.25%)
- 305/70R16 16" (+0.61%)
- 245/85R16 16" (-0.64%)
- 285/75R16 16" (+0.67%)
Questions about 265/70R18
How tall is a 265/70R18 tire in inches?
A 265/70R18 tire is 32.61 inches (828 mm) tall: the 18-inch rim plus two sidewalls of 7.30 inches each.
Is 265/70R18 a 33 inch tire?
Yes. At 32.61 inches tall it is commonly called a 33-inch tire.
How many revolutions per mile does a 265/70R18 make?
About 619 revolutions per mile, based on a calculated circumference of 102.4 inches.
What size can replace 265/70R18?
285/65R18 is the closest match on a 18" rim (-0.06% height). Check load index, speed rating and clearance first.
Compare 265/70R18 against any other size with the tire size calculator.