Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/60-18 | 305/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.94 (811.2) | 33.61 (853.7) | 1.67 (42.5) 5.2% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 100.33 (2548.46) | 105.59 (2681.98) | 5.26 (133.52) 5.2% |
| Sidewall Height inches (mm) | 6.97 (177) | 7.81 (198.25) | 0.84 (21.25) 12% |
| Revolutions per mile (km) | 631.5 (392.39) | 600.06 (372.86) | -31.44 (-19.53) -5% |
305/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.87 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.34 km/h) |
| 30 mph (48.28 km/h) | 31.57 mph (50.81 km/h) |
| 35 mph (56.33 km/h) | 36.83 mph (59.28 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.75 km/h) |
| 45 mph (72.42 km/h) | 47.36 mph (76.21 km/h) |
| 50 mph (80.47 km/h) | 52.62 mph (84.68 km/h) |
| 55 mph (88.51 km/h) | 57.88 mph (93.15 km/h) |
| 60 mph (96.56 km/h) | 63.14 mph (101.62 km/h) |
| 65 mph (104.61 km/h) | 68.41 mph (110.09 km/h) |
| 70 mph (112.65 km/h) | 73.67 mph (118.56 km/h) |
| 75 mph (120.7 km/h) | 78.93 mph (127.02 km/h) |
| 80 mph (128.75 km/h) | 84.19 mph (135.49 km/h) |
| 85 mph (136.79 km/h) | 89.45 mph (143.96 km/h) |
| 90 mph (144.84 km/h) | 94.72 mph (152.43 km/h) |
| 95 mph (152.89 km/h) | 99.98 mph (160.9 km/h) |
| 100 mph (160.93 km/h) | 105.24 mph (169.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1527 | 1774 | 1910 | 1995 | 2086 | 2151 | 2222 | 2307 | 2424 | 2541 | 2671 | 2775 | 2963 | 3171 | 3333 | 3437 | 3496 | 3710 | 4009 | 4659 |
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