Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/85r16 vs 215/75r16 Tire Comparison Side By Side
  195/85-16 215/75-16 Difference
Diameter inches (mm) 29.05 (737.9) 28.7 (728.9) -0.35 (-9) -1.2%
Width inches (mm) 7.68 (195) 8.46 (215) 0.79 (20) 10.3%
Circum. inches (mm) 91.27 (2318.18) 90.15 (2289.91) -1.11 (-28.27) -1.2%
Sidewall Height inches (mm) 6.53 (165.75) 6.35 (161.25) -0.18 (-4.5) -2.7%
Revolutions per mile (km) 694.23 (431.37) 702.8 (436.7) 8.57 (5.33) 1.2%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.76 mph (31.79 km/h)
25 mph (40.23 km/h)24.7 mph (39.74 km/h)
30 mph (48.28 km/h)29.63 mph (47.69 km/h)
35 mph (56.33 km/h)34.57 mph (55.64 km/h)
40 mph (64.37 km/h)39.51 mph (63.59 km/h)
45 mph (72.42 km/h)44.45 mph (71.54 km/h)
50 mph (80.47 km/h)49.39 mph (79.49 km/h)
55 mph (88.51 km/h)54.33 mph (87.43 km/h)
60 mph (96.56 km/h)59.27 mph (95.38 km/h)
65 mph (104.61 km/h)64.21 mph (103.33 km/h)
70 mph (112.65 km/h)69.15 mph (111.28 km/h)
75 mph (120.7 km/h)74.09 mph (119.23 km/h)
80 mph (128.75 km/h)79.02 mph (127.18 km/h)
85 mph (136.79 km/h)83.96 mph (135.13 km/h)
90 mph (144.84 km/h)88.9 mph (143.07 km/h)
95 mph (152.89 km/h)93.84 mph (151.02 km/h)
100 mph (160.93 km/h)98.78 mph (158.97 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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