Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/80-19 | 235/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.02 (762.6) | 29.1 (739.2) | -0.92 (-23.4) -3.1% |
| Width inches (mm) | 6.89 (175) | 9.25 (235) | 2.36 (60) 34.3% |
| Circum. inches (mm) | 94.32 (2395.78) | 91.43 (2322.27) | -2.89 (-73.51) -3.1% |
| Sidewall Height inches (mm) | 5.51 (140) | 5.55 (141) | 0.04 (1) 0.7% |
| Revolutions per mile (km) | 671.74 (417.4) | 693.01 (430.61) | 21.26 (13.21) 3.2% |
235/60-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.39 mph (31.2 km/h) |
| 25 mph (40.23 km/h) | 24.23 mph (39 km/h) |
| 30 mph (48.28 km/h) | 29.08 mph (46.8 km/h) |
| 35 mph (56.33 km/h) | 33.93 mph (54.6 km/h) |
| 40 mph (64.37 km/h) | 38.77 mph (62.4 km/h) |
| 45 mph (72.42 km/h) | 43.62 mph (70.2 km/h) |
| 50 mph (80.47 km/h) | 48.47 mph (78 km/h) |
| 55 mph (88.51 km/h) | 53.31 mph (85.8 km/h) |
| 60 mph (96.56 km/h) | 58.16 mph (93.6 km/h) |
| 65 mph (104.61 km/h) | 63.01 mph (101.4 km/h) |
| 70 mph (112.65 km/h) | 67.85 mph (109.2 km/h) |
| 75 mph (120.7 km/h) | 72.7 mph (117 km/h) |
| 80 mph (128.75 km/h) | 77.55 mph (124.8 km/h) |
| 85 mph (136.79 km/h) | 82.39 mph (132.6 km/h) |
| 90 mph (144.84 km/h) | 87.24 mph (140.4 km/h) |
| 95 mph (152.89 km/h) | 92.08 mph (148.2 km/h) |
| 100 mph (160.93 km/h) | 96.93 mph (156 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
