Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 33/12.5-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 33.03 (838.92) | 0.42 (10.72) 1.3% |
| Width inches (mm) | 12.01 (305) | 12.52 (318) | 0.51 (13) 4.3% |
| Circum. inches (mm) | 102.44 (2601.87) | 103.76 (2635.54) | 1.33 (33.68) 1.3% |
| Sidewall Height inches (mm) | 4.8 (122) | 9.01 (228.96) | 4.21 (106.96) 87.7% |
| Revolutions per mile (km) | 618.53 (384.34) | 610.63 (379.43) | -7.9 (-4.91) -1.3% |
33/12.5-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.26 mph (32.6 km/h) |
| 25 mph (40.23 km/h) | 25.32 mph (40.75 km/h) |
| 30 mph (48.28 km/h) | 30.39 mph (48.91 km/h) |
| 35 mph (56.33 km/h) | 35.45 mph (57.06 km/h) |
| 40 mph (64.37 km/h) | 40.52 mph (65.21 km/h) |
| 45 mph (72.42 km/h) | 45.58 mph (73.36 km/h) |
| 50 mph (80.47 km/h) | 50.65 mph (81.51 km/h) |
| 55 mph (88.51 km/h) | 55.71 mph (89.66 km/h) |
| 60 mph (96.56 km/h) | 60.78 mph (97.81 km/h) |
| 65 mph (104.61 km/h) | 65.84 mph (105.96 km/h) |
| 70 mph (112.65 km/h) | 70.91 mph (114.11 km/h) |
| 75 mph (120.7 km/h) | 75.97 mph (122.26 km/h) |
| 80 mph (128.75 km/h) | 81.04 mph (130.41 km/h) |
| 85 mph (136.79 km/h) | 86.1 mph (138.57 km/h) |
| 90 mph (144.84 km/h) | 91.16 mph (146.72 km/h) |
| 95 mph (152.89 km/h) | 96.23 mph (154.87 km/h) |
| 100 mph (160.93 km/h) | 101.29 mph (163.02 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1554 | 1805 | 1944 | 2030 | 2123 | 2189 | 2261 | 2347 | 2466 | 2585 | 2718 | 2824 | 3015 | 3227 | 3392 | 3498 | 3558 | 3776 | 4080 | 4741 |
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