Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
135/70r17 vs 135/90r17 Tire Comparison Side By Side
  135/70-17 135/90-17 Difference
Diameter inches (mm) 24.44 (620.8) 26.57 (674.8) 2.13 (54) 8.7%
Width inches (mm) 5.31 (135) 5.31 (135) 0 (0) 0%
Circum. inches (mm) 76.78 (1950.3) 83.46 (2119.95) 6.68 (169.65) 8.7%
Sidewall Height inches (mm) 3.72 (94.5) 4.78 (121.5) 1.06 (27) 28.6%
Revolutions per mile (km) 825.18 (512.74) 759.14 (471.71) -66.03 (-41.03) -8%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)21.74 mph (34.99 km/h)
25 mph (40.23 km/h)27.17 mph (43.73 km/h)
30 mph (48.28 km/h)32.61 mph (52.48 km/h)
35 mph (56.33 km/h)38.04 mph (61.23 km/h)
40 mph (64.37 km/h)43.48 mph (69.97 km/h)
45 mph (72.42 km/h)48.91 mph (78.72 km/h)
50 mph (80.47 km/h)54.35 mph (87.47 km/h)
55 mph (88.51 km/h)59.78 mph (96.21 km/h)
60 mph (96.56 km/h)65.22 mph (104.96 km/h)
65 mph (104.61 km/h)70.65 mph (113.71 km/h)
70 mph (112.65 km/h)76.09 mph (122.45 km/h)
75 mph (120.7 km/h)81.52 mph (131.2 km/h)
80 mph (128.75 km/h)86.96 mph (139.95 km/h)
85 mph (136.79 km/h)92.39 mph (148.69 km/h)
90 mph (144.84 km/h)97.83 mph (157.44 km/h)
95 mph (152.89 km/h)103.26 mph (166.19 km/h)
100 mph (160.93 km/h)108.7 mph (174.93 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
19322244241725242639272128112918306632143379351037494012421743494423469450725894
Better Fuel Economy Factory Ratios Increased Power

Most Popular 135/70-R17 Comparisons

To Top