Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/65r14 vs 205/70r14 Tire Comparison Side By Side
  195/65-14 205/70-14 Difference
Diameter inches (mm) 23.98 (609.1) 25.3 (642.6) 1.32 (33.5) 5.5%
Width inches (mm) 7.68 (195) 8.07 (205) 0.39 (10) 5.1%
Circum. inches (mm) 75.34 (1913.54) 79.48 (2018.79) 4.14 (105.24) 5.5%
Sidewall Height inches (mm) 4.99 (126.75) 5.65 (143.5) 0.66 (16.75) 13.2%
Revolutions per mile (km) 841.03 (522.59) 797.18 (495.35) -43.84 (-27.24) -5.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.1 mph (33.96 km/h)
25 mph (40.23 km/h)26.37 mph (42.45 km/h)
30 mph (48.28 km/h)31.65 mph (50.94 km/h)
35 mph (56.33 km/h)36.92 mph (59.43 km/h)
40 mph (64.37 km/h)42.2 mph (67.91 km/h)
45 mph (72.42 km/h)47.47 mph (76.4 km/h)
50 mph (80.47 km/h)52.75 mph (84.89 km/h)
55 mph (88.51 km/h)58.02 mph (93.38 km/h)
60 mph (96.56 km/h)63.3 mph (101.87 km/h)
65 mph (104.61 km/h)68.57 mph (110.36 km/h)
70 mph (112.65 km/h)73.85 mph (118.85 km/h)
75 mph (120.7 km/h)79.12 mph (127.34 km/h)
80 mph (128.75 km/h)84.4 mph (135.83 km/h)
85 mph (136.79 km/h)89.67 mph (144.32 km/h)
90 mph (144.84 km/h)94.95 mph (152.81 km/h)
95 mph (152.89 km/h)100.22 mph (161.3 km/h)
100 mph (160.93 km/h)105.5 mph (169.79 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
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