Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/60r17 vs 235/75r15 Tire Comparison Side By Side
  255/60-17 235/75-15 Difference
Diameter inches (mm) 29.05 (737.8) 28.88 (733.5) -0.17 (-4.3) -0.6%
Width inches (mm) 10.04 (255) 9.25 (235) -0.79 (-20) -7.8%
Circum. inches (mm) 91.25 (2317.87) 90.72 (2304.36) -0.53 (-13.51) -0.6%
Sidewall Height inches (mm) 6.02 (153) 6.94 (176.25) 0.92 (23.25) 15.2%
Revolutions per mile (km) 694.32 (431.43) 698.39 (433.96) 4.07 (2.53) 0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.88 mph (32 km/h)
25 mph (40.23 km/h)24.85 mph (40 km/h)
30 mph (48.28 km/h)29.83 mph (48 km/h)
35 mph (56.33 km/h)34.8 mph (56 km/h)
40 mph (64.37 km/h)39.77 mph (64 km/h)
45 mph (72.42 km/h)44.74 mph (72 km/h)
50 mph (80.47 km/h)49.71 mph (80 km/h)
55 mph (88.51 km/h)54.68 mph (88 km/h)
60 mph (96.56 km/h)59.65 mph (96 km/h)
65 mph (104.61 km/h)64.62 mph (104 km/h)
70 mph (112.65 km/h)69.59 mph (112 km/h)
75 mph (120.7 km/h)74.56 mph (120 km/h)
80 mph (128.75 km/h)79.53 mph (128 km/h)
85 mph (136.79 km/h)84.5 mph (136 km/h)
90 mph (144.84 km/h)89.48 mph (144 km/h)
95 mph (152.89 km/h)94.45 mph (152 km/h)
100 mph (160.93 km/h)99.42 mph (160 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
17772065222323222428250325862685282129573108322934493691388040014069431846665423
Better Fuel Economy Factory Ratios Increased Power

Most Popular 255/60-R17 Comparisons

To Top