Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/65-18 | 215/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.52 (749.7) | 29 (736.7) | -0.51 (-13) -1.7% |
| Width inches (mm) | 8.86 (225) | 8.46 (215) | -0.39 (-10) -4.4% |
| Circum. inches (mm) | 92.73 (2355.25) | 91.12 (2314.41) | -1.61 (-40.84) -1.7% |
| Sidewall Height inches (mm) | 5.76 (146.25) | 5.5 (139.75) | -0.26 (-6.5) -4.4% |
| Revolutions per mile (km) | 683.3 (424.58) | 695.36 (432.07) | 12.06 (7.49) 1.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.65 mph (31.63 km/h) |
| 25 mph (40.23 km/h) | 24.57 mph (39.54 km/h) |
| 30 mph (48.28 km/h) | 29.48 mph (47.44 km/h) |
| 35 mph (56.33 km/h) | 34.39 mph (55.35 km/h) |
| 40 mph (64.37 km/h) | 39.31 mph (63.26 km/h) |
| 45 mph (72.42 km/h) | 44.22 mph (71.16 km/h) |
| 50 mph (80.47 km/h) | 49.13 mph (79.07 km/h) |
| 55 mph (88.51 km/h) | 54.05 mph (86.98 km/h) |
| 60 mph (96.56 km/h) | 58.96 mph (94.89 km/h) |
| 65 mph (104.61 km/h) | 63.87 mph (102.79 km/h) |
| 70 mph (112.65 km/h) | 68.79 mph (110.7 km/h) |
| 75 mph (120.7 km/h) | 73.7 mph (118.61 km/h) |
| 80 mph (128.75 km/h) | 78.61 mph (126.52 km/h) |
| 85 mph (136.79 km/h) | 83.53 mph (134.42 km/h) |
| 90 mph (144.84 km/h) | 88.44 mph (142.33 km/h) |
| 95 mph (152.89 km/h) | 93.35 mph (150.24 km/h) |
| 100 mph (160.93 km/h) | 98.27 mph (158.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1770 | 2056 | 2214 | 2312 | 2417 | 2492 | 2575 | 2673 | 2809 | 2944 | 3095 | 3215 | 3434 | 3675 | 3863 | 3983 | 4051 | 4300 | 4646 | 5399 |
Better Fuel Economy Factory Ratios Increased Power
