Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
130/50r23 vs 120/55r26 Tire Comparison Side By Side
  130/50-23 120/55-26 Difference
Diameter inches (mm) 28.12 (714.2) 31.2 (792.4) 3.08 (78.2) 10.9%
Width inches (mm) 5.12 (130) 4.72 (120) -0.39 (-10) -7.7%
Circum. inches (mm) 88.34 (2243.73) 98.01 (2489.4) 9.67 (245.67) 10.9%
Sidewall Height inches (mm) 2.56 (65) 2.6 (66) 0.04 (1) 1.5%
Revolutions per mile (km) 717.26 (445.69) 646.48 (401.7) -70.79 (-43.98) -9.9%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.19 mph (35.71 km/h)
25 mph (40.23 km/h)27.74 mph (44.64 km/h)
30 mph (48.28 km/h)33.28 mph (53.57 km/h)
35 mph (56.33 km/h)38.83 mph (62.49 km/h)
40 mph (64.37 km/h)44.38 mph (71.42 km/h)
45 mph (72.42 km/h)49.93 mph (80.35 km/h)
50 mph (80.47 km/h)55.47 mph (89.28 km/h)
55 mph (88.51 km/h)61.02 mph (98.21 km/h)
60 mph (96.56 km/h)66.57 mph (107.13 km/h)
65 mph (104.61 km/h)72.12 mph (116.06 km/h)
70 mph (112.65 km/h)77.66 mph (124.99 km/h)
75 mph (120.7 km/h)83.21 mph (133.92 km/h)
80 mph (128.75 km/h)88.76 mph (142.84 km/h)
85 mph (136.79 km/h)94.31 mph (151.77 km/h)
90 mph (144.84 km/h)99.85 mph (160.7 km/h)
95 mph (152.89 km/h)105.4 mph (169.63 km/h)
100 mph (160.93 km/h)110.95 mph (178.56 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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