Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/70r17 vs 215/70r16 Tire Comparison Side By Side
  195/70-17 215/70-16 Difference
Diameter inches (mm) 27.75 (704.8) 27.85 (707.4) 0.1 (2.6) 0.4%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 87.17 (2214.19) 87.49 (2222.36) 0.32 (8.17) 0.4%
Sidewall Height inches (mm) 5.37 (136.5) 5.93 (150.5) 0.55 (14) 10.3%
Revolutions per mile (km) 726.83 (451.63) 724.16 (449.97) -2.67 (-1.66) -0.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.07 mph (32.31 km/h)
25 mph (40.23 km/h)25.09 mph (40.38 km/h)
30 mph (48.28 km/h)30.11 mph (48.46 km/h)
35 mph (56.33 km/h)35.13 mph (56.53 km/h)
40 mph (64.37 km/h)40.15 mph (64.61 km/h)
45 mph (72.42 km/h)45.17 mph (72.69 km/h)
50 mph (80.47 km/h)50.18 mph (80.76 km/h)
55 mph (88.51 km/h)55.2 mph (88.84 km/h)
60 mph (96.56 km/h)60.22 mph (96.92 km/h)
65 mph (104.61 km/h)65.24 mph (104.99 km/h)
70 mph (112.65 km/h)70.26 mph (113.07 km/h)
75 mph (120.7 km/h)75.28 mph (121.15 km/h)
80 mph (128.75 km/h)80.3 mph (129.22 km/h)
85 mph (136.79 km/h)85.31 mph (137.3 km/h)
90 mph (144.84 km/h)90.33 mph (145.38 km/h)
95 mph (152.89 km/h)95.35 mph (153.45 km/h)
100 mph (160.93 km/h)100.37 mph (161.53 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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