Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-18 | 135/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 27.57 (700.2) | 1.06 (27) 4% |
| Width inches (mm) | 5.31 (135) | 5.31 (135) | 0 (0) 0% |
| Circum. inches (mm) | 83.26 (2114.92) | 86.6 (2199.74) | 3.34 (84.82) 4% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.78 (121.5) | 0.53 (13.5) 12.5% |
| Revolutions per mile (km) | 760.95 (472.83) | 731.61 (454.6) | -29.34 (-18.23) -3.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.8 mph (33.48 km/h) |
| 25 mph (40.23 km/h) | 26 mph (41.85 km/h) |
| 30 mph (48.28 km/h) | 31.2 mph (50.22 km/h) |
| 35 mph (56.33 km/h) | 36.4 mph (58.59 km/h) |
| 40 mph (64.37 km/h) | 41.6 mph (66.96 km/h) |
| 45 mph (72.42 km/h) | 46.8 mph (75.33 km/h) |
| 50 mph (80.47 km/h) | 52.01 mph (83.69 km/h) |
| 55 mph (88.51 km/h) | 57.21 mph (92.06 km/h) |
| 60 mph (96.56 km/h) | 62.41 mph (100.43 km/h) |
| 65 mph (104.61 km/h) | 67.61 mph (108.8 km/h) |
| 70 mph (112.65 km/h) | 72.81 mph (117.17 km/h) |
| 75 mph (120.7 km/h) | 78.01 mph (125.54 km/h) |
| 80 mph (128.75 km/h) | 83.21 mph (133.91 km/h) |
| 85 mph (136.79 km/h) | 88.41 mph (142.28 km/h) |
| 90 mph (144.84 km/h) | 93.61 mph (150.65 km/h) |
| 95 mph (152.89 km/h) | 98.81 mph (159.02 km/h) |
| 100 mph (160.93 km/h) | 104.01 mph (167.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1862 | 2163 | 2329 | 2432 | 2543 | 2622 | 2710 | 2813 | 2955 | 3098 | 3256 | 3383 | 3613 | 3866 | 4064 | 4191 | 4262 | 4524 | 4888 | 5680 |
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