Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 255/45-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 32.04 (813.7) | -0.57 (-14.5) -1.8% |
| Width inches (mm) | 12.01 (305) | 10.04 (255) | -1.97 (-50) -16.4% |
| Circum. inches (mm) | 102.44 (2601.87) | 100.64 (2556.31) | -1.79 (-45.55) -1.8% |
| Sidewall Height inches (mm) | 4.8 (122) | 4.52 (114.75) | -0.29 (-7.25) -5.9% |
| Revolutions per mile (km) | 618.53 (384.34) | 629.56 (391.19) | 11.02 (6.85) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.65 mph (31.62 km/h) |
| 25 mph (40.23 km/h) | 24.56 mph (39.53 km/h) |
| 30 mph (48.28 km/h) | 29.47 mph (47.44 km/h) |
| 35 mph (56.33 km/h) | 34.39 mph (55.34 km/h) |
| 40 mph (64.37 km/h) | 39.3 mph (63.25 km/h) |
| 45 mph (72.42 km/h) | 44.21 mph (71.15 km/h) |
| 50 mph (80.47 km/h) | 49.12 mph (79.06 km/h) |
| 55 mph (88.51 km/h) | 54.04 mph (86.96 km/h) |
| 60 mph (96.56 km/h) | 58.95 mph (94.87 km/h) |
| 65 mph (104.61 km/h) | 63.86 mph (102.78 km/h) |
| 70 mph (112.65 km/h) | 68.77 mph (110.68 km/h) |
| 75 mph (120.7 km/h) | 73.69 mph (118.59 km/h) |
| 80 mph (128.75 km/h) | 78.6 mph (126.49 km/h) |
| 85 mph (136.79 km/h) | 83.51 mph (134.4 km/h) |
| 90 mph (144.84 km/h) | 88.42 mph (142.31 km/h) |
| 95 mph (152.89 km/h) | 93.34 mph (150.21 km/h) |
| 100 mph (160.93 km/h) | 98.25 mph (158.12 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1602 | 1861 | 2004 | 2093 | 2188 | 2257 | 2332 | 2420 | 2543 | 2666 | 2802 | 2911 | 3109 | 3327 | 3497 | 3606 | 3668 | 3893 | 4206 | 4888 |
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