Tire Size Calculator

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Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
295/25r28 vs 305/35r28 Tire Comparison Side By Side
  295/25-28 305/35-28 Difference
Diameter inches (mm) 33.81 (858.7) 36.41 (924.7) 2.6 (66) 7.7%
Width inches (mm) 11.61 (295) 12.01 (305) 0.39 (10) 3.4%
Circum. inches (mm) 106.21 (2697.69) 114.37 (2905.03) 8.16 (207.35) 7.7%
Sidewall Height inches (mm) 2.9 (73.75) 4.2 (106.75) 1.3 (33) 44.7%
Revolutions per mile (km) 596.56 (370.69) 553.99 (344.23) -42.58 (-26.46) -7.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.54 mph (34.66 km/h)
25 mph (40.23 km/h)26.92 mph (43.33 km/h)
30 mph (48.28 km/h)32.31 mph (51.99 km/h)
35 mph (56.33 km/h)37.69 mph (60.66 km/h)
40 mph (64.37 km/h)43.07 mph (69.32 km/h)
45 mph (72.42 km/h)48.46 mph (77.99 km/h)
50 mph (80.47 km/h)53.84 mph (86.65 km/h)
55 mph (88.51 km/h)59.23 mph (95.32 km/h)
60 mph (96.56 km/h)64.61 mph (103.98 km/h)
65 mph (104.61 km/h)70 mph (112.65 km/h)
70 mph (112.65 km/h)75.38 mph (121.31 km/h)
75 mph (120.7 km/h)80.76 mph (129.98 km/h)
80 mph (128.75 km/h)86.15 mph (138.64 km/h)
85 mph (136.79 km/h)91.53 mph (147.31 km/h)
90 mph (144.84 km/h)96.92 mph (155.97 km/h)
95 mph (152.89 km/h)102.3 mph (164.64 km/h)
100 mph (160.93 km/h)107.69 mph (173.3 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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