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 205/70r10 Tire Comparison Side By Side
  165/70-10 205/70-10 Difference
Diameter inches (mm) 19.09 (485) 21.3 (541) 2.2 (56) 11.5%
Width inches (mm) 6.5 (165) 8.07 (205) 1.57 (40) 24.2%
Circum. inches (mm) 59.99 (1523.67) 66.91 (1699.6) 6.93 (175.93) 11.5%
Sidewall Height inches (mm) 4.55 (115.5) 5.65 (143.5) 1.1 (28) 24.2%
Revolutions per mile (km) 1056.23 (656.31) 946.89 (588.37) -109.33 (-67.94) -10.4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)22.31 mph (35.9 km/h)
25 mph (40.23 km/h)27.89 mph (44.88 km/h)
30 mph (48.28 km/h)33.46 mph (53.86 km/h)
35 mph (56.33 km/h)39.04 mph (62.83 km/h)
40 mph (64.37 km/h)44.62 mph (71.81 km/h)
45 mph (72.42 km/h)50.2 mph (80.78 km/h)
50 mph (80.47 km/h)55.77 mph (89.76 km/h)
55 mph (88.51 km/h)61.35 mph (98.73 km/h)
60 mph (96.56 km/h)66.93 mph (107.71 km/h)
65 mph (104.61 km/h)72.51 mph (116.69 km/h)
70 mph (112.65 km/h)78.08 mph (125.66 km/h)
75 mph (120.7 km/h)83.66 mph (134.64 km/h)
80 mph (128.75 km/h)89.24 mph (143.61 km/h)
85 mph (136.79 km/h)94.81 mph (152.59 km/h)
90 mph (144.84 km/h)100.39 mph (161.57 km/h)
95 mph (152.89 km/h)105.97 mph (170.54 km/h)
100 mph (160.93 km/h)111.55 mph (179.52 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