Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/40-15 | 195/30-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.77 (553) | 19.61 (498) | -2.17 (-55) -9.9% |
| Width inches (mm) | 8.46 (215) | 7.68 (195) | -0.79 (-20) -9.3% |
| Circum. inches (mm) | 68.4 (1737.3) | 61.6 (1564.51) | -6.8 (-172.79) -9.9% |
| Sidewall Height inches (mm) | 3.39 (86) | 2.3 (58.5) | -1.08 (-27.5) -32% |
| Revolutions per mile (km) | 926.35 (575.6) | 1028.65 (639.18) | 102.31 (63.57) 11% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.01 mph (28.99 km/h) |
| 25 mph (40.23 km/h) | 22.51 mph (36.23 km/h) |
| 30 mph (48.28 km/h) | 27.02 mph (43.48 km/h) |
| 35 mph (56.33 km/h) | 31.52 mph (50.72 km/h) |
| 40 mph (64.37 km/h) | 36.02 mph (57.97 km/h) |
| 45 mph (72.42 km/h) | 40.52 mph (65.22 km/h) |
| 50 mph (80.47 km/h) | 45.03 mph (72.46 km/h) |
| 55 mph (88.51 km/h) | 49.53 mph (79.71 km/h) |
| 60 mph (96.56 km/h) | 54.03 mph (86.96 km/h) |
| 65 mph (104.61 km/h) | 58.54 mph (94.2 km/h) |
| 70 mph (112.65 km/h) | 63.04 mph (101.45 km/h) |
| 75 mph (120.7 km/h) | 67.54 mph (108.7 km/h) |
| 80 mph (128.75 km/h) | 72.04 mph (115.94 km/h) |
| 85 mph (136.79 km/h) | 76.55 mph (123.19 km/h) |
| 90 mph (144.84 km/h) | 81.05 mph (130.44 km/h) |
| 95 mph (152.89 km/h) | 85.55 mph (137.68 km/h) |
| 100 mph (160.93 km/h) | 90.05 mph (144.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
