Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r17 vs 195/45r17 Tire Comparison Side By Side
  135/70-17 195/45-17 Difference
Diameter inches (mm) 24.44 (620.8) 23.91 (607.3) -0.53 (-13.5) -2.2%
Width inches (mm) 5.31 (135) 7.68 (195) 2.36 (60) 44.4%
Circum. inches (mm) 76.78 (1950.3) 75.11 (1907.89) -1.67 (-42.41) -2.2%
Sidewall Height inches (mm) 3.72 (94.5) 3.45 (87.75) -0.27 (-6.75) -7.1%
Revolutions per mile (km) 825.18 (512.74) 843.52 (524.14) 18.34 (11.4) 2.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.57 mph (31.49 km/h)
25 mph (40.23 km/h)24.46 mph (39.36 km/h)
30 mph (48.28 km/h)29.35 mph (47.23 km/h)
35 mph (56.33 km/h)34.24 mph (55.1 km/h)
40 mph (64.37 km/h)39.13 mph (62.97 km/h)
45 mph (72.42 km/h)44.02 mph (70.85 km/h)
50 mph (80.47 km/h)48.91 mph (78.72 km/h)
55 mph (88.51 km/h)53.8 mph (86.59 km/h)
60 mph (96.56 km/h)58.7 mph (94.46 km/h)
65 mph (104.61 km/h)63.59 mph (102.33 km/h)
70 mph (112.65 km/h)68.48 mph (110.2 km/h)
75 mph (120.7 km/h)73.37 mph (118.08 km/h)
80 mph (128.75 km/h)78.26 mph (125.95 km/h)
85 mph (136.79 km/h)83.15 mph (133.82 km/h)
90 mph (144.84 km/h)88.04 mph (141.69 km/h)
95 mph (152.89 km/h)92.93 mph (149.56 km/h)
100 mph (160.93 km/h)97.83 mph (157.44 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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