Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
32/10r17 vs 35/12.5r20 Tire Comparison Side By Side
  32/10-17 35/12.5-20 Difference
Diameter inches (mm) 32 (812.8) 35.02 (889.6) 3.02 (76.8) 9.4%
Width inches (mm) 10 (254) 12.52 (318) 2.52 (64) 25.2%
Circum. inches (mm) 100.53 (2553.49) 110.03 (2794.76) 9.5 (241.27) 9.4%
Sidewall Height inches (mm) 7.5 (190.5) 7.51 (190.8) 0.01 (0.3) 0.2%
Revolutions per mile (km) 630.25 (391.62) 575.84 (357.81) -54.41 (-33.81) -8.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.89 mph (35.23 km/h)
25 mph (40.23 km/h)27.36 mph (44.04 km/h)
30 mph (48.28 km/h)32.83 mph (52.84 km/h)
35 mph (56.33 km/h)38.31 mph (61.65 km/h)
40 mph (64.37 km/h)43.78 mph (70.46 km/h)
45 mph (72.42 km/h)49.25 mph (79.26 km/h)
50 mph (80.47 km/h)54.72 mph (88.07 km/h)
55 mph (88.51 km/h)60.2 mph (96.88 km/h)
60 mph (96.56 km/h)65.67 mph (105.68 km/h)
65 mph (104.61 km/h)71.14 mph (114.49 km/h)
70 mph (112.65 km/h)76.61 mph (123.3 km/h)
75 mph (120.7 km/h)82.09 mph (132.11 km/h)
80 mph (128.75 km/h)87.56 mph (140.91 km/h)
85 mph (136.79 km/h)93.03 mph (149.72 km/h)
90 mph (144.84 km/h)98.5 mph (158.53 km/h)
95 mph (152.89 km/h)103.98 mph (167.33 km/h)
100 mph (160.93 km/h)109.45 mph (176.14 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
14651702183319142002206421332214232624382563266328443043319932993355356138474471
Better Fuel Economy Factory Ratios Increased Power

Most Popular 32/10-R17 Comparisons

To Top