Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
165/70r10 vs 205/50r13 Tire Comparison Side By Side
  165/70-10 205/50-13 Difference
Diameter inches (mm) 19.09 (485) 21.07 (535.2) 1.98 (50.2) 10.4%
Width inches (mm) 6.5 (165) 8.07 (205) 1.57 (40) 24.2%
Circum. inches (mm) 59.99 (1523.67) 66.2 (1681.38) 6.21 (157.71) 10.4%
Sidewall Height inches (mm) 4.55 (115.5) 4.04 (102.5) -0.51 (-13) -11.3%
Revolutions per mile (km) 1056.23 (656.31) 957.16 (594.75) -99.07 (-61.56) -9.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.07 mph (35.52 km/h)
25 mph (40.23 km/h)27.59 mph (44.4 km/h)
30 mph (48.28 km/h)33.11 mph (53.28 km/h)
35 mph (56.33 km/h)38.62 mph (62.16 km/h)
40 mph (64.37 km/h)44.14 mph (71.04 km/h)
45 mph (72.42 km/h)49.66 mph (79.92 km/h)
50 mph (80.47 km/h)55.18 mph (88.8 km/h)
55 mph (88.51 km/h)60.69 mph (97.68 km/h)
60 mph (96.56 km/h)66.21 mph (106.56 km/h)
65 mph (104.61 km/h)71.73 mph (115.43 km/h)
70 mph (112.65 km/h)77.25 mph (124.31 km/h)
75 mph (120.7 km/h)82.76 mph (133.19 km/h)
80 mph (128.75 km/h)88.28 mph (142.07 km/h)
85 mph (136.79 km/h)93.8 mph (150.95 km/h)
90 mph (144.84 km/h)99.32 mph (159.83 km/h)
95 mph (152.89 km/h)104.83 mph (168.71 km/h)
100 mph (160.93 km/h)110.35 mph (177.59 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
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Better Fuel Economy Factory Ratios Increased Power

Most Popular 165/70-R10 Comparisons

To Top