335/55R21 tire size in inches
A 335/55R21 tire measures
35.5" tall × 13.2" wide
7.25" sidewall on a 21" wheel. 568 revolutions per mile.
335/55R21 means a tire 335 mm wide, with sidewalls 55% as tall as the tire is wide (184 mm), radial construction (R), for a 21 inch wheel.
335/55R21 specs
| Overall diameter (height) | 35.51 inches (902 mm) |
|---|---|
| Section width | 13.19 inches (335 mm) |
| Sidewall height | 7.25 inches (184 mm) |
| Wheel (rim) diameter | 21 inches |
| Circumference | 111.6 inches (2,833 mm) |
| Revolutions per mile | 568 |
| Revolutions per kilometer | 353 |
| Approximate rim width | 9.5" to 11.0" |
| In inches (flotation style) | 35.5x13.2R21 |
| 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 335/55R21 on a 21" wheel
These 21" sizes are within 3% of 335/55R21's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 325/55R21 | 35.07" | 12.80" | −1.2% | 59.3 mph | Compare |
| 345/55R21 | 35.94" | 13.58" | +1.2% | 60.7 mph | Compare |
| 355/50R21 | 34.98" | 13.98" | −1.5% | 59.1 mph | Compare |
| 315/55R21 | 34.64" | 12.40" | −2.4% | 58.5 mph | Compare |
| 345/50R21 | 34.58" | 13.58" | −2.6% | 58.4 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 345/50R22 | 22" | 35.58" | +0.2% | Compare |
| 295/75R18 | 18" | 35.42" | −0.2% | Compare |
| 315/75R17 | 17" | 35.60" | +0.3% | Compare |
| 305/65R20 | 20" | 35.61" | +0.3% | Compare |
| 325/65R19 | 19" | 35.63" | +0.4% | Compare |
| 355/55R20 | 20" | 35.37" | −0.4% | Compare |
| 315/55R22 | 22" | 35.64" | +0.4% | Compare |
| 315/70R18 | 18" | 35.36" | −0.4% | Compare |
| 325/60R20 | 20" | 35.35" | −0.4% | Compare |
| 345/60R19 | 19" | 35.30" | −0.6% | Compare |
| 295/85R16 | 16" | 35.74" | +0.7% | Compare |
| 355/60R19 | 19" | 35.77" | +0.7% | Compare |
One size up or down
Compare 335/55R21 with another size
Questions
- How tall is a 335/55R21 tire?
- A 335/55R21 tire is 35.5 inches tall (902 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 335/55R21 mean?
- 335/55R21 means a tire 335 mm wide, with sidewalls 55% as tall as the tire is wide (184 mm), radial construction (R), for a 21 inch wheel.
- How many revolutions per mile does a 335/55R21 tire make?
- About 568 revolutions per mile, based on a circumference of 111.6 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 335/55R21 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 325/55R21 instead of 335/55R21?
- 325/55R21 is −0.43 inches (−1.2%) in overall diameter, so at an indicated 60 mph you would be doing 59.3 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.