Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
245/60r17 vs 275/60r15 Tire Comparison Side By Side
  245/60-17 275/60-15 Difference
Diameter inches (mm) 28.57 (725.8) 27.99 (711) -0.58 (-14.8) -2%
Width inches (mm) 9.65 (245) 10.83 (275) 1.18 (30) 12.2%
Circum. inches (mm) 89.77 (2280.17) 87.94 (2233.67) -1.83 (-46.5) -2%
Sidewall Height inches (mm) 5.79 (147) 6.5 (165) 0.71 (18) 12.2%
Revolutions per mile (km) 705.8 (438.56) 720.49 (447.69) 14.69 (9.13) 2.1%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.59 mph (31.53 km/h)
25 mph (40.23 km/h)24.49 mph (39.41 km/h)
30 mph (48.28 km/h)29.39 mph (47.3 km/h)
35 mph (56.33 km/h)34.29 mph (55.18 km/h)
40 mph (64.37 km/h)39.18 mph (63.06 km/h)
45 mph (72.42 km/h)44.08 mph (70.94 km/h)
50 mph (80.47 km/h)48.98 mph (78.83 km/h)
55 mph (88.51 km/h)53.88 mph (86.71 km/h)
60 mph (96.56 km/h)58.78 mph (94.59 km/h)
65 mph (104.61 km/h)63.67 mph (102.47 km/h)
70 mph (112.65 km/h)68.57 mph (110.36 km/h)
75 mph (120.7 km/h)73.47 mph (118.24 km/h)
80 mph (128.75 km/h)78.37 mph (126.12 km/h)
85 mph (136.79 km/h)83.27 mph (134.01 km/h)
90 mph (144.84 km/h)88.16 mph (141.89 km/h)
95 mph (152.89 km/h)93.06 mph (149.77 km/h)
100 mph (160.93 km/h)97.96 mph (157.65 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
18342130229423952505258326682770291030513207333235583807400341274198445548145594
Better Fuel Economy Factory Ratios Increased Power

Most Popular 245/60-R17 Comparisons

To Top