Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/65-18 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.54 (775.7) | 29.1 (739.2) | -1.44 (-36.5) -4.7% |
| Width inches (mm) | 9.65 (245) | 9.25 (235) | -0.39 (-10) -4.1% |
| Circum. inches (mm) | 95.94 (2436.93) | 91.43 (2322.27) | -4.51 (-114.67) -4.7% |
| Sidewall Height inches (mm) | 6.27 (159.25) | 5.55 (141) | -0.72 (-18.25) -11.5% |
| Revolutions per mile (km) | 660.4 (410.35) | 693.01 (430.61) | 32.61 (20.26) 4.9% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.06 mph (30.67 km/h) |
| 25 mph (40.23 km/h) | 23.82 mph (38.34 km/h) |
| 30 mph (48.28 km/h) | 28.59 mph (46.01 km/h) |
| 35 mph (56.33 km/h) | 33.35 mph (53.68 km/h) |
| 40 mph (64.37 km/h) | 38.12 mph (61.34 km/h) |
| 45 mph (72.42 km/h) | 42.88 mph (69.01 km/h) |
| 50 mph (80.47 km/h) | 47.65 mph (76.68 km/h) |
| 55 mph (88.51 km/h) | 52.41 mph (84.35 km/h) |
| 60 mph (96.56 km/h) | 57.18 mph (92.02 km/h) |
| 65 mph (104.61 km/h) | 61.94 mph (99.69 km/h) |
| 70 mph (112.65 km/h) | 66.71 mph (107.35 km/h) |
| 75 mph (120.7 km/h) | 71.47 mph (115.02 km/h) |
| 80 mph (128.75 km/h) | 76.24 mph (122.69 km/h) |
| 85 mph (136.79 km/h) | 81 mph (130.36 km/h) |
| 90 mph (144.84 km/h) | 85.77 mph (138.03 km/h) |
| 95 mph (152.89 km/h) | 90.53 mph (145.69 km/h) |
| 100 mph (160.93 km/h) | 95.29 mph (153.36 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
