Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
265/55r19 vs 35/12.5r19 Tire Comparison Side By Side
  265/55-19 35/12.5-19 Difference
Diameter inches (mm) 30.48 (774.1) 35.03 (889.64) 4.55 (115.54) 14.9%
Width inches (mm) 10.43 (265) 12.52 (318) 2.09 (53) 20%
Circum. inches (mm) 95.74 (2431.91) 110.03 (2794.89) 14.29 (362.98) 14.9%
Sidewall Height inches (mm) 5.74 (145.75) 8.01 (203.52) 2.27 (57.77) 39.6%
Revolutions per mile (km) 661.76 (411.2) 575.82 (357.8) -85.94 (-53.4) -13%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.99 mph (36.99 km/h)
25 mph (40.23 km/h)28.73 mph (46.24 km/h)
30 mph (48.28 km/h)34.48 mph (55.49 km/h)
35 mph (56.33 km/h)40.22 mph (64.73 km/h)
40 mph (64.37 km/h)45.97 mph (73.98 km/h)
45 mph (72.42 km/h)51.72 mph (83.23 km/h)
50 mph (80.47 km/h)57.46 mph (92.48 km/h)
55 mph (88.51 km/h)63.21 mph (101.73 km/h)
60 mph (96.56 km/h)68.96 mph (110.97 km/h)
65 mph (104.61 km/h)74.7 mph (120.22 km/h)
70 mph (112.65 km/h)80.45 mph (129.47 km/h)
75 mph (120.7 km/h)86.19 mph (138.72 km/h)
80 mph (128.75 km/h)91.94 mph (147.96 km/h)
85 mph (136.79 km/h)97.69 mph (157.21 km/h)
90 mph (144.84 km/h)103.43 mph (166.46 km/h)
95 mph (152.89 km/h)109.18 mph (175.71 km/h)
100 mph (160.93 km/h)114.93 mph (184.96 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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