Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/40r17 vs 195/35r17 Tire Comparison Side By Side
  195/40-17 195/35-17 Difference
Diameter inches (mm) 23.14 (587.8) 22.37 (568.3) -0.77 (-19.5) -3.3%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 72.7 (1846.63) 70.29 (1785.37) -2.41 (-61.26) -3.3%
Sidewall Height inches (mm) 3.07 (78) 2.69 (68.25) -0.38 (-9.75) -12.5%
Revolutions per mile (km) 871.5 (541.53) 901.41 (560.11) 29.9 (18.58) 3.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.34 mph (31.12 km/h)
25 mph (40.23 km/h)24.17 mph (38.9 km/h)
30 mph (48.28 km/h)29 mph (46.68 km/h)
35 mph (56.33 km/h)33.84 mph (54.46 km/h)
40 mph (64.37 km/h)38.67 mph (62.24 km/h)
45 mph (72.42 km/h)43.51 mph (70.02 km/h)
50 mph (80.47 km/h)48.34 mph (77.8 km/h)
55 mph (88.51 km/h)53.18 mph (85.58 km/h)
60 mph (96.56 km/h)58.01 mph (93.36 km/h)
65 mph (104.61 km/h)62.84 mph (101.14 km/h)
70 mph (112.65 km/h)67.68 mph (108.92 km/h)
75 mph (120.7 km/h)72.51 mph (116.7 km/h)
80 mph (128.75 km/h)77.35 mph (124.48 km/h)
85 mph (136.79 km/h)82.18 mph (132.26 km/h)
90 mph (144.84 km/h)87.01 mph (140.04 km/h)
95 mph (152.89 km/h)91.85 mph (147.82 km/h)
100 mph (160.93 km/h)96.68 mph (155.6 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
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