Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/80r17 vs 195/60r15 Tire Comparison Side By Side
  135/80-17 195/60-15 Difference
Diameter inches (mm) 25.5 (647.8) 24.21 (615) -1.29 (-32.8) -5.1%
Width inches (mm) 5.31 (135) 7.68 (195) 2.36 (60) 44.4%
Circum. inches (mm) 80.12 (2035.12) 76.07 (1932.08) -4.06 (-103.04) -5.1%
Sidewall Height inches (mm) 4.25 (108) 4.61 (117) 0.35 (9) 8.3%
Revolutions per mile (km) 790.78 (491.37) 832.96 (517.58) 42.18 (26.21) 5.3%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)18.99 mph (30.56 km/h)
25 mph (40.23 km/h)23.73 mph (38.2 km/h)
30 mph (48.28 km/h)28.48 mph (45.84 km/h)
35 mph (56.33 km/h)33.23 mph (53.48 km/h)
40 mph (64.37 km/h)37.97 mph (61.11 km/h)
45 mph (72.42 km/h)42.72 mph (68.75 km/h)
50 mph (80.47 km/h)47.47 mph (76.39 km/h)
55 mph (88.51 km/h)52.22 mph (84.03 km/h)
60 mph (96.56 km/h)56.96 mph (91.67 km/h)
65 mph (104.61 km/h)61.71 mph (99.31 km/h)
70 mph (112.65 km/h)66.46 mph (106.95 km/h)
75 mph (120.7 km/h)71.2 mph (114.59 km/h)
80 mph (128.75 km/h)75.95 mph (122.23 km/h)
85 mph (136.79 km/h)80.7 mph (129.87 km/h)
90 mph (144.84 km/h)85.44 mph (137.51 km/h)
95 mph (152.89 km/h)90.19 mph (145.15 km/h)
100 mph (160.93 km/h)94.94 mph (152.79 km/h)

Gear Ratio / RPMs for New Tire (@ 65 mph)
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
21202462265227692895298630853202336435273707385241134402462747724853515055656467
Better Fuel Economy Factory Ratios Increased Power

Most Popular 135/80-R17 Comparisons

To Top