Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
28/10r15 vs 295/65r15 Tire Comparison Side By Side
  28/10-15 295/65-15 Difference
Diameter inches (mm) 28 (711.2) 30.1 (764.5) 2.1 (53.3) 7.5%
Width inches (mm) 10 (254) 11.61 (295) 1.61 (41) 16.1%
Circum. inches (mm) 87.96 (2234.3) 94.56 (2401.75) 6.59 (167.45) 7.5%
Sidewall Height inches (mm) 6.5 (165.1) 7.55 (191.75) 1.05 (26.65) 16.1%
Revolutions per mile (km) 720.29 (447.57) 670.07 (416.36) -50.22 (-31.2) -7%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.5 mph (34.6 km/h)
25 mph (40.23 km/h)26.87 mph (43.25 km/h)
30 mph (48.28 km/h)32.25 mph (51.9 km/h)
35 mph (56.33 km/h)37.62 mph (60.55 km/h)
40 mph (64.37 km/h)43 mph (69.2 km/h)
45 mph (72.42 km/h)48.37 mph (77.85 km/h)
50 mph (80.47 km/h)53.75 mph (86.5 km/h)
55 mph (88.51 km/h)59.12 mph (95.15 km/h)
60 mph (96.56 km/h)64.5 mph (103.8 km/h)
65 mph (104.61 km/h)69.87 mph (112.45 km/h)
70 mph (112.65 km/h)75.25 mph (121.1 km/h)
75 mph (120.7 km/h)80.62 mph (129.75 km/h)
80 mph (128.75 km/h)86 mph (138.4 km/h)
85 mph (136.79 km/h)91.37 mph (147.05 km/h)
90 mph (144.84 km/h)96.74 mph (155.7 km/h)
95 mph (152.89 km/h)102.12 mph (164.35 km/h)
100 mph (160.93 km/h)107.49 mph (173 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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