335/55R18 tire size in inches
A 335/55R18 tire measures
32.5" tall × 13.2" wide
7.25" sidewall on a 18" wheel. 620 revolutions per mile.
335/55R18 means a tire 335 mm wide, with sidewalls 55% as tall as the tire is wide (184 mm), radial construction (R), for a 18 inch wheel.
335/55R18 specs
| Overall diameter (height) | 32.51 inches (826 mm) |
|---|---|
| Section width | 13.19 inches (335 mm) |
| Sidewall height | 7.25 inches (184 mm) |
| Wheel (rim) diameter | 18 inches |
| Circumference | 102.1 inches (2,594 mm) |
| Revolutions per mile | 620 |
| Revolutions per kilometer | 386 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 32.5x13.2R18 |
| Aspect ratio | 55% |
Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.
Sizes that can replace 335/55R18 on a 18" wheel
These 18" sizes are within 3% of 335/55R18's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 245/75R18 | 32.47" | 9.65" | −0.1% | 59.9 mph | Compare |
| 285/65R18 | 32.59" | 11.22" | +0.2% | 60.1 mph | Compare |
| 305/60R18 | 32.41" | 12.01" | −0.3% | 59.8 mph | Compare |
| 265/70R18 | 32.61" | 10.43" | +0.3% | 60.2 mph | Compare |
| 315/60R18 | 32.88" | 12.40" | +1.2% | 60.7 mph | Compare |
| 275/65R18 | 32.07" | 10.83" | −1.3% | 59.2 mph | Compare |
| 325/55R18 | 32.07" | 12.80" | −1.3% | 59.2 mph | Compare |
| 255/70R18 | 32.06" | 10.04" | −1.4% | 59.2 mph | Compare |
| 33x12.50R18 | 33.00" | 12.50" | +1.5% | 60.9 mph | Compare |
| 255/75R18 | 33.06" | 10.04" | +1.7% | 61.0 mph | Compare |
| 295/60R18 | 31.94" | 11.61" | −1.8% | 58.9 mph | Compare |
| 295/65R18 | 33.10" | 11.61" | +1.8% | 61.1 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 325/45R21 | 21" | 32.52" | 0.0% | Compare |
| 265/60R20 | 20" | 32.52" | 0.0% | Compare |
| 245/65R20 | 20" | 32.54" | +0.1% | Compare |
| 265/55R21 | 21" | 32.48" | −0.1% | Compare |
| 285/60R19 | 19" | 32.46" | −0.1% | Compare |
| 335/40R22 | 22" | 32.55" | +0.1% | Compare |
| 265/65R19 | 19" | 32.56" | +0.2% | Compare |
| 295/45R22 | 22" | 32.45" | −0.2% | Compare |
| 355/45R20 | 20" | 32.58" | +0.2% | Compare |
| 265/50R22 | 22" | 32.43" | −0.2% | Compare |
| 345/50R19 | 19" | 32.58" | +0.2% | Compare |
| 305/35R24 | 24" | 32.41" | −0.3% | Compare |
One size up or down
- 325/55R18narrower: 32.1" × 12.8"
- 335/50R18lower profile: 31.2" × 13.2"
- 335/60R18taller sidewall: 33.8" × 13.2"
Compare 335/55R18 with another size
Questions
- How tall is a 335/55R18 tire?
- A 335/55R18 tire is 32.5 inches tall (826 mm), calculated from the size. It is 13.2 inches wide with 7.3 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 335/55R18 mean?
- 335/55R18 means a tire 335 mm wide, with sidewalls 55% as tall as the tire is wide (184 mm), radial construction (R), for a 18 inch wheel.
- How many revolutions per mile does a 335/55R18 tire make?
- About 620 revolutions per mile, based on a circumference of 102.1 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 335/55R18 tire?
- Roughly 9.5" to 11.0". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 245/75R18 instead of 335/55R18?
- 245/75R18 is −0.04 inches (−0.1%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.