Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
175/76r14 vs 195/70r14 Tire Comparison Side By Side
  175/76-14 195/70-14 Difference
Diameter inches (mm) 24.47 (621.6) 24.75 (628.6) 0.28 (7) 1.1%
Width inches (mm) 6.89 (175) 7.68 (195) 0.79 (20) 11.4%
Circum. inches (mm) 76.88 (1952.81) 77.75 (1974.81) 0.87 (21.99) 1.1%
Sidewall Height inches (mm) 5.24 (133) 5.37 (136.5) 0.14 (3.5) 2.6%
Revolutions per mile (km) 824.12 (512.08) 814.94 (506.38) -9.18 (-5.7) -1.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.23 mph (32.55 km/h)
25 mph (40.23 km/h)25.28 mph (40.69 km/h)
30 mph (48.28 km/h)30.34 mph (48.82 km/h)
35 mph (56.33 km/h)35.39 mph (56.96 km/h)
40 mph (64.37 km/h)40.45 mph (65.1 km/h)
45 mph (72.42 km/h)45.51 mph (73.24 km/h)
50 mph (80.47 km/h)50.56 mph (81.37 km/h)
55 mph (88.51 km/h)55.62 mph (89.51 km/h)
60 mph (96.56 km/h)60.68 mph (97.65 km/h)
65 mph (104.61 km/h)65.73 mph (105.79 km/h)
70 mph (112.65 km/h)70.79 mph (113.92 km/h)
75 mph (120.7 km/h)75.84 mph (122.06 km/h)
80 mph (128.75 km/h)80.9 mph (130.2 km/h)
85 mph (136.79 km/h)85.96 mph (138.33 km/h)
90 mph (144.84 km/h)91.01 mph (146.47 km/h)
95 mph (152.89 km/h)96.07 mph (154.61 km/h)
100 mph (160.93 km/h)101.13 mph (162.75 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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