Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
255/30r22 vs 305/30r22 Tire Comparison Side By Side
  255/30-22 305/30-22 Difference
Diameter inches (mm) 28.02 (711.8) 29.2 (741.8) 1.18 (30) 4.2%
Width inches (mm) 10.04 (255) 12.01 (305) 1.97 (50) 19.6%
Circum. inches (mm) 88.04 (2236.19) 91.75 (2330.43) 3.71 (94.25) 4.2%
Sidewall Height inches (mm) 3.01 (76.5) 3.6 (91.5) 0.59 (15) 19.6%
Revolutions per mile (km) 719.68 (447.19) 690.58 (429.1) -29.11 (-18.09) -4%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)20.84 mph (33.54 km/h)
25 mph (40.23 km/h)26.05 mph (41.93 km/h)
30 mph (48.28 km/h)31.26 mph (50.32 km/h)
35 mph (56.33 km/h)36.48 mph (58.7 km/h)
40 mph (64.37 km/h)41.69 mph (67.09 km/h)
45 mph (72.42 km/h)46.9 mph (75.47 km/h)
50 mph (80.47 km/h)52.11 mph (83.86 km/h)
55 mph (88.51 km/h)57.32 mph (92.24 km/h)
60 mph (96.56 km/h)62.53 mph (100.63 km/h)
65 mph (104.61 km/h)67.74 mph (109.02 km/h)
70 mph (112.65 km/h)72.95 mph (117.4 km/h)
75 mph (120.7 km/h)78.16 mph (125.79 km/h)
80 mph (128.75 km/h)83.37 mph (134.17 km/h)
85 mph (136.79 km/h)88.58 mph (142.56 km/h)
90 mph (144.84 km/h)93.79 mph (150.95 km/h)
95 mph (152.89 km/h)99 mph (159.33 km/h)
100 mph (160.93 km/h)104.21 mph (167.72 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
17572042219922962401247525582655278929243074319334103649383639564023427046145362
Better Fuel Economy Factory Ratios Increased Power

Most Popular 255/30-R22 Comparisons

To Top