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 265/60r19 Tire Comparison Side By Side
  255/60-19 265/60-19 Difference
Diameter inches (mm) 31.05 (788.6) 31.52 (800.6) 0.47 (12) 1.5%
Width inches (mm) 10.04 (255) 10.43 (265) 0.39 (10) 3.9%
Circum. inches (mm) 97.54 (2477.46) 99.02 (2515.16) 1.48 (37.7) 1.5%
Sidewall Height inches (mm) 6.02 (153) 6.26 (159) 0.24 (6) 3.9%
Revolutions per mile (km) 649.59 (403.64) 639.86 (397.59) -9.74 (-6.05) -1.5%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.3 mph (32.68 km/h)
25 mph (40.23 km/h)25.38 mph (40.85 km/h)
30 mph (48.28 km/h)30.46 mph (49.02 km/h)
35 mph (56.33 km/h)35.53 mph (57.18 km/h)
40 mph (64.37 km/h)40.61 mph (65.35 km/h)
45 mph (72.42 km/h)45.68 mph (73.52 km/h)
50 mph (80.47 km/h)50.76 mph (81.69 km/h)
55 mph (88.51 km/h)55.84 mph (89.86 km/h)
60 mph (96.56 km/h)60.91 mph (98.03 km/h)
65 mph (104.61 km/h)65.99 mph (106.2 km/h)
70 mph (112.65 km/h)71.07 mph (114.37 km/h)
75 mph (120.7 km/h)76.14 mph (122.54 km/h)
80 mph (128.75 km/h)81.22 mph (130.71 km/h)
85 mph (136.79 km/h)86.29 mph (138.88 km/h)
90 mph (144.84 km/h)91.37 mph (147.05 km/h)
95 mph (152.89 km/h)96.45 mph (155.21 km/h)
100 mph (160.93 km/h)101.52 mph (163.38 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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