Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/55-18 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.74 (704.7) | 29.1 (739.2) | 1.36 (34.5) 4.9% |
| Width inches (mm) | 8.86 (225) | 9.25 (235) | 0.39 (10) 4.4% |
| Circum. inches (mm) | 87.16 (2213.88) | 91.43 (2322.27) | 4.27 (108.38) 4.9% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 5.55 (141) | 0.68 (17.25) 13.9% |
| Revolutions per mile (km) | 726.93 (451.69) | 693.01 (430.61) | -33.93 (-21.08) -4.7% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.98 mph (33.76 km/h) |
| 25 mph (40.23 km/h) | 26.22 mph (42.2 km/h) |
| 30 mph (48.28 km/h) | 31.47 mph (50.64 km/h) |
| 35 mph (56.33 km/h) | 36.71 mph (59.08 km/h) |
| 40 mph (64.37 km/h) | 41.96 mph (67.53 km/h) |
| 45 mph (72.42 km/h) | 47.2 mph (75.97 km/h) |
| 50 mph (80.47 km/h) | 52.45 mph (84.41 km/h) |
| 55 mph (88.51 km/h) | 57.69 mph (92.85 km/h) |
| 60 mph (96.56 km/h) | 62.94 mph (101.29 km/h) |
| 65 mph (104.61 km/h) | 68.18 mph (109.73 km/h) |
| 70 mph (112.65 km/h) | 73.43 mph (118.17 km/h) |
| 75 mph (120.7 km/h) | 78.67 mph (126.61 km/h) |
| 80 mph (128.75 km/h) | 83.92 mph (135.05 km/h) |
| 85 mph (136.79 km/h) | 89.16 mph (143.49 km/h) |
| 90 mph (144.84 km/h) | 94.41 mph (151.93 km/h) |
| 95 mph (152.89 km/h) | 99.65 mph (160.37 km/h) |
| 100 mph (160.93 km/h) | 104.9 mph (168.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1764 | 2049 | 2206 | 2304 | 2409 | 2484 | 2567 | 2664 | 2799 | 2934 | 3084 | 3204 | 3422 | 3662 | 3850 | 3970 | 4037 | 4285 | 4630 | 5381 |
Better Fuel Economy Factory Ratios Increased Power
