Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/45-15 | 305/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.45 (646.5) | 32.41 (823.2) | 6.96 (176.7) 27.3% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 79.96 (2031.04) | 101.82 (2586.16) | 21.86 (555.12) 27.3% |
| Sidewall Height inches (mm) | 5.23 (132.75) | 7.2 (183) | 1.98 (50.25) 37.9% |
| Revolutions per mile (km) | 792.37 (492.36) | 622.29 (386.67) | -170.08 (-105.68) -21.5% |
305/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.47 mph (40.98 km/h) |
| 25 mph (40.23 km/h) | 31.83 mph (51.23 km/h) |
| 30 mph (48.28 km/h) | 38.2 mph (61.48 km/h) |
| 35 mph (56.33 km/h) | 44.57 mph (71.72 km/h) |
| 40 mph (64.37 km/h) | 50.93 mph (81.97 km/h) |
| 45 mph (72.42 km/h) | 57.3 mph (92.21 km/h) |
| 50 mph (80.47 km/h) | 63.67 mph (102.46 km/h) |
| 55 mph (88.51 km/h) | 70.03 mph (112.71 km/h) |
| 60 mph (96.56 km/h) | 76.4 mph (122.95 km/h) |
| 65 mph (104.61 km/h) | 82.77 mph (133.2 km/h) |
| 70 mph (112.65 km/h) | 89.13 mph (143.44 km/h) |
| 75 mph (120.7 km/h) | 95.5 mph (153.69 km/h) |
| 80 mph (128.75 km/h) | 101.87 mph (163.94 km/h) |
| 85 mph (136.79 km/h) | 108.23 mph (174.18 km/h) |
| 90 mph (144.84 km/h) | 114.6 mph (184.43 km/h) |
| 95 mph (152.89 km/h) | 120.97 mph (194.67 km/h) |
| 100 mph (160.93 km/h) | 127.33 mph (204.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1584 | 1840 | 1981 | 2069 | 2163 | 2231 | 2305 | 2392 | 2514 | 2635 | 2770 | 2877 | 3073 | 3289 | 3457 | 3565 | 3625 | 3848 | 4158 | 4832 |
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