Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/65-18 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.03 (762.7) | 29.1 (739.2) | -0.93 (-23.5) -3.1% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 94.33 (2396.09) | 91.43 (2322.27) | -2.91 (-73.83) -3.1% |
| Sidewall Height inches (mm) | 6.01 (152.75) | 5.55 (141) | -0.46 (-11.75) -7.7% |
| Revolutions per mile (km) | 671.65 (417.35) | 693.01 (430.61) | 21.35 (13.27) 3.2% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.38 mph (31.2 km/h) |
| 25 mph (40.23 km/h) | 24.23 mph (38.99 km/h) |
| 30 mph (48.28 km/h) | 29.08 mph (46.79 km/h) |
| 35 mph (56.33 km/h) | 33.92 mph (54.59 km/h) |
| 40 mph (64.37 km/h) | 38.77 mph (62.39 km/h) |
| 45 mph (72.42 km/h) | 43.61 mph (70.19 km/h) |
| 50 mph (80.47 km/h) | 48.46 mph (77.99 km/h) |
| 55 mph (88.51 km/h) | 53.31 mph (85.79 km/h) |
| 60 mph (96.56 km/h) | 58.15 mph (93.59 km/h) |
| 65 mph (104.61 km/h) | 63 mph (101.38 km/h) |
| 70 mph (112.65 km/h) | 67.84 mph (109.18 km/h) |
| 75 mph (120.7 km/h) | 72.69 mph (116.98 km/h) |
| 80 mph (128.75 km/h) | 77.54 mph (124.78 km/h) |
| 85 mph (136.79 km/h) | 82.38 mph (132.58 km/h) |
| 90 mph (144.84 km/h) | 87.23 mph (140.38 km/h) |
| 95 mph (152.89 km/h) | 92.07 mph (148.18 km/h) |
| 100 mph (160.93 km/h) | 96.92 mph (155.98 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
