Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/60r19 vs 265/55r19 Tire Comparison Side By Side
  255/60-19 265/55-19 Difference
Diameter inches (mm) 31.05 (788.6) 30.48 (774.1) -0.57 (-14.5) -1.8%
Width inches (mm) 10.04 (255) 10.43 (265) 0.39 (10) 3.9%
Circum. inches (mm) 97.54 (2477.46) 95.74 (2431.91) -1.79 (-45.55) -1.8%
Sidewall Height inches (mm) 6.02 (153) 5.74 (145.75) -0.29 (-7.25) -4.7%
Revolutions per mile (km) 649.59 (403.64) 661.76 (411.2) 12.17 (7.56) 1.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.63 mph (31.6 km/h)
25 mph (40.23 km/h)24.54 mph (39.49 km/h)
30 mph (48.28 km/h)29.45 mph (47.39 km/h)
35 mph (56.33 km/h)34.36 mph (55.29 km/h)
40 mph (64.37 km/h)39.26 mph (63.19 km/h)
45 mph (72.42 km/h)44.17 mph (71.09 km/h)
50 mph (80.47 km/h)49.08 mph (78.99 km/h)
55 mph (88.51 km/h)53.99 mph (86.89 km/h)
60 mph (96.56 km/h)58.9 mph (94.79 km/h)
65 mph (104.61 km/h)63.8 mph (102.68 km/h)
70 mph (112.65 km/h)68.71 mph (110.58 km/h)
75 mph (120.7 km/h)73.62 mph (118.48 km/h)
80 mph (128.75 km/h)78.53 mph (126.38 km/h)
85 mph (136.79 km/h)83.44 mph (134.28 km/h)
90 mph (144.84 km/h)88.35 mph (142.18 km/h)
95 mph (152.89 km/h)93.25 mph (150.08 km/h)
100 mph (160.93 km/h)98.16 mph (157.98 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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