335/30R21 tire size in inches
A 335/30R21 tire measures
28.9" tall × 13.2" wide
3.96" sidewall on a 21" wheel. 698 revolutions per mile.
335/30R21 means a tire 335 mm wide, with sidewalls 30% as tall as the tire is wide (101 mm), radial construction (R), for a 21 inch wheel.
335/30R21 specs
| Overall diameter (height) | 28.91 inches (734 mm) |
|---|---|
| Section width | 13.19 inches (335 mm) |
| Sidewall height | 3.96 inches (101 mm) |
| Wheel (rim) diameter | 21 inches |
| Circumference | 90.8 inches (2,307 mm) |
| Revolutions per mile | 698 |
| Revolutions per kilometer | 433 |
| Approximate rim width | 11.0" to 12.5" |
| In inches (flotation style) | 28.9x13.2R21 |
| Aspect ratio | 30% |
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 335/30R21 on a 21" wheel
These 21" sizes are within 3% of 335/30R21's overall diameter, the range most tire shops treat as interchangeable.
| Size | Diameter | Width | Difference | Real speed at 60 | |
|---|---|---|---|---|---|
| 285/35R21 | 28.85" | 11.22" | −0.2% | 59.9 mph | Compare |
| 225/45R21 | 28.97" | 8.86" | +0.2% | 60.1 mph | Compare |
| 255/40R21 | 29.03" | 10.04" | +0.4% | 60.2 mph | Compare |
| 245/40R21 | 28.72" | 9.65" | −0.7% | 59.6 mph | Compare |
| 295/35R21 | 29.13" | 11.61" | +0.7% | 60.4 mph | Compare |
| 325/30R21 | 28.68" | 12.80" | −0.8% | 59.5 mph | Compare |
| 345/30R21 | 29.15" | 13.58" | +0.8% | 60.5 mph | Compare |
| 275/35R21 | 28.58" | 10.83" | −1.2% | 59.3 mph | Compare |
| 235/45R21 | 29.33" | 9.25" | +1.4% | 60.9 mph | Compare |
| 265/40R21 | 29.35" | 10.43" | +1.5% | 60.9 mph | Compare |
| 315/30R21 | 28.44" | 12.40" | −1.6% | 59.0 mph | Compare |
| 355/30R21 | 29.39" | 13.98" | +1.6% | 61.0 mph | Compare |
Same height on other wheel sizes (plus and minus sizing)
| Size | Wheel | Diameter | Difference | |
|---|---|---|---|---|
| 205/80R16 | 16" | 28.91" | 0.0% | Compare |
| 275/55R17 | 17" | 28.91" | 0.0% | Compare |
| 315/40R19 | 19" | 28.92" | 0.0% | Compare |
| 235/75R15 | 15" | 28.88" | −0.1% | Compare |
| 235/70R16 | 16" | 28.95" | +0.1% | Compare |
| 325/35R20 | 20" | 28.96" | +0.1% | Compare |
| 225/50R20 | 20" | 28.86" | −0.2% | Compare |
| 295/30R22 | 22" | 28.97" | +0.2% | Compare |
| 215/70R17 | 17" | 28.85" | −0.2% | Compare |
| 285/40R20 | 20" | 28.98" | +0.2% | Compare |
| 355/25R22 | 22" | 28.99" | +0.3% | Compare |
| 275/60R16 | 16" | 28.99" | +0.3% | Compare |
One size up or down
- 325/30R21narrower: 28.7" × 12.8"
- 345/30R21wider: 29.1" × 13.6"
- 335/25R21lower profile: 27.6" × 13.2"
- 335/35R21taller sidewall: 30.2" × 13.2"
Compare 335/30R21 with another size
Questions
- How tall is a 335/30R21 tire?
- A 335/30R21 tire is 28.9 inches tall (734 mm), calculated from the size. It is 13.2 inches wide with 4.0 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
- What does 335/30R21 mean?
- 335/30R21 means a tire 335 mm wide, with sidewalls 30% as tall as the tire is wide (101 mm), radial construction (R), for a 21 inch wheel.
- How many revolutions per mile does a 335/30R21 tire make?
- About 698 revolutions per mile, based on a circumference of 90.8 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
- What rim width fits a 335/30R21 tire?
- Roughly 11.0" to 12.5". Check the tire maker's approved rim range for the exact model before buying wheels.
- Can I use 285/35R21 instead of 335/30R21?
- 285/35R21 is −0.06 inches (−0.2%) 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.