Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
195/60r16 vs 195/65r15 Tire Comparison Side By Side
  195/60-16 195/65-15 Difference
Diameter inches (mm) 25.21 (640.4) 24.98 (634.5) -0.23 (-5.9) -0.9%
Width inches (mm) 7.68 (195) 7.68 (195) 0 (0) 0%
Circum. inches (mm) 79.21 (2011.88) 78.48 (1993.34) -0.73 (-18.54) -0.9%
Sidewall Height inches (mm) 4.61 (117) 4.99 (126.75) 0.38 (9.75) 8.3%
Revolutions per mile (km) 799.92 (497.05) 807.36 (501.67) 7.44 (4.62) 0.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.82 mph (31.89 km/h)
25 mph (40.23 km/h)24.77 mph (39.86 km/h)
30 mph (48.28 km/h)29.72 mph (47.84 km/h)
35 mph (56.33 km/h)34.68 mph (55.81 km/h)
40 mph (64.37 km/h)39.63 mph (63.78 km/h)
45 mph (72.42 km/h)44.59 mph (71.75 km/h)
50 mph (80.47 km/h)49.54 mph (79.73 km/h)
55 mph (88.51 km/h)54.49 mph (87.7 km/h)
60 mph (96.56 km/h)59.45 mph (95.67 km/h)
65 mph (104.61 km/h)64.4 mph (103.64 km/h)
70 mph (112.65 km/h)69.36 mph (111.62 km/h)
75 mph (120.7 km/h)74.31 mph (119.59 km/h)
80 mph (128.75 km/h)79.26 mph (127.56 km/h)
85 mph (136.79 km/h)84.22 mph (135.53 km/h)
90 mph (144.84 km/h)89.17 mph (143.51 km/h)
95 mph (152.89 km/h)94.12 mph (151.48 km/h)
100 mph (160.93 km/h)99.08 mph (159.45 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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