Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/90-18 | 135/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.98 (736.2) | 25.44 (646.2) | -3.54 (-90) -12.2% |
| Width inches (mm) | 6.1 (155) | 5.31 (135) | -0.79 (-20) -12.9% |
| Circum. inches (mm) | 91.06 (2312.84) | 79.93 (2030.1) | -11.13 (-282.74) -12.2% |
| Sidewall Height inches (mm) | 5.49 (139.5) | 3.72 (94.5) | -1.77 (-45) -32.3% |
| Revolutions per mile (km) | 695.83 (432.37) | 792.74 (492.59) | 96.91 (60.22) 13.9% |
135/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.56 mph (28.25 km/h) |
| 25 mph (40.23 km/h) | 21.94 mph (35.32 km/h) |
| 30 mph (48.28 km/h) | 26.33 mph (42.38 km/h) |
| 35 mph (56.33 km/h) | 30.72 mph (49.44 km/h) |
| 40 mph (64.37 km/h) | 35.11 mph (56.5 km/h) |
| 45 mph (72.42 km/h) | 39.5 mph (63.57 km/h) |
| 50 mph (80.47 km/h) | 43.89 mph (70.63 km/h) |
| 55 mph (88.51 km/h) | 48.28 mph (77.69 km/h) |
| 60 mph (96.56 km/h) | 52.67 mph (84.76 km/h) |
| 65 mph (104.61 km/h) | 57.05 mph (91.82 km/h) |
| 70 mph (112.65 km/h) | 61.44 mph (98.88 km/h) |
| 75 mph (120.7 km/h) | 65.83 mph (105.95 km/h) |
| 80 mph (128.75 km/h) | 70.22 mph (113.01 km/h) |
| 85 mph (136.79 km/h) | 74.61 mph (120.07 km/h) |
| 90 mph (144.84 km/h) | 79 mph (127.13 km/h) |
| 95 mph (152.89 km/h) | 83.39 mph (134.2 km/h) |
| 100 mph (160.93 km/h) | 87.78 mph (141.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2017 | 2344 | 2524 | 2635 | 2756 | 2841 | 2936 | 3048 | 3202 | 3357 | 3528 | 3666 | 3915 | 4189 | 4404 | 4541 | 4619 | 4902 | 5297 | 6155 |
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