Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/35-21 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.03 (711.9) | 29.1 (739.2) | 1.07 (27.3) 3.8% |
| Width inches (mm) | 10.04 (255) | 9.25 (235) | -0.79 (-20) -7.8% |
| Circum. inches (mm) | 88.05 (2236.5) | 91.43 (2322.27) | 3.38 (85.77) 3.8% |
| Sidewall Height inches (mm) | 3.51 (89.25) | 5.55 (141) | 2.04 (51.75) 58% |
| Revolutions per mile (km) | 719.58 (447.13) | 693.01 (430.61) | -26.58 (-16.51) -3.7% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.77 mph (33.42 km/h) |
| 25 mph (40.23 km/h) | 25.96 mph (41.78 km/h) |
| 30 mph (48.28 km/h) | 31.15 mph (50.13 km/h) |
| 35 mph (56.33 km/h) | 36.34 mph (58.49 km/h) |
| 40 mph (64.37 km/h) | 41.53 mph (66.84 km/h) |
| 45 mph (72.42 km/h) | 46.73 mph (75.2 km/h) |
| 50 mph (80.47 km/h) | 51.92 mph (83.55 km/h) |
| 55 mph (88.51 km/h) | 57.11 mph (91.91 km/h) |
| 60 mph (96.56 km/h) | 62.3 mph (100.26 km/h) |
| 65 mph (104.61 km/h) | 67.49 mph (108.62 km/h) |
| 70 mph (112.65 km/h) | 72.68 mph (116.97 km/h) |
| 75 mph (120.7 km/h) | 77.88 mph (125.33 km/h) |
| 80 mph (128.75 km/h) | 83.07 mph (133.68 km/h) |
| 85 mph (136.79 km/h) | 88.26 mph (142.04 km/h) |
| 90 mph (144.84 km/h) | 93.45 mph (150.4 km/h) |
| 95 mph (152.89 km/h) | 98.64 mph (158.75 km/h) |
| 100 mph (160.93 km/h) | 103.83 mph (167.11 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
