Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/70-18 | 210/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.92 (709.2) | 25.44 (646.2) | -2.48 (-63) -8.9% |
| Width inches (mm) | 7.09 (180) | 8.27 (210) | 1.18 (30) 16.7% |
| Circum. inches (mm) | 87.72 (2228.02) | 79.93 (2030.1) | -7.79 (-197.92) -8.9% |
| Sidewall Height inches (mm) | 4.96 (126) | 3.72 (94.5) | -1.24 (-31.5) -25% |
| Revolutions per mile (km) | 722.32 (448.83) | 792.74 (492.59) | 70.42 (43.76) 9.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.22 mph (29.33 km/h) |
| 25 mph (40.23 km/h) | 22.78 mph (36.66 km/h) |
| 30 mph (48.28 km/h) | 27.34 mph (43.99 km/h) |
| 35 mph (56.33 km/h) | 31.89 mph (51.32 km/h) |
| 40 mph (64.37 km/h) | 36.45 mph (58.66 km/h) |
| 45 mph (72.42 km/h) | 41 mph (65.99 km/h) |
| 50 mph (80.47 km/h) | 45.56 mph (73.32 km/h) |
| 55 mph (88.51 km/h) | 50.11 mph (80.65 km/h) |
| 60 mph (96.56 km/h) | 54.67 mph (87.98 km/h) |
| 65 mph (104.61 km/h) | 59.23 mph (95.32 km/h) |
| 70 mph (112.65 km/h) | 63.78 mph (102.65 km/h) |
| 75 mph (120.7 km/h) | 68.34 mph (109.98 km/h) |
| 80 mph (128.75 km/h) | 72.89 mph (117.31 km/h) |
| 85 mph (136.79 km/h) | 77.45 mph (124.64 km/h) |
| 90 mph (144.84 km/h) | 82.01 mph (131.97 km/h) |
| 95 mph (152.89 km/h) | 86.56 mph (139.31 km/h) |
| 100 mph (160.93 km/h) | 91.12 mph (146.64 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 |
Better Fuel Economy Factory Ratios Increased Power
