Tire Size Calculator

Tire Size Finder (optional):

Stock Sizes

  • 255/75-16

Plus Sizes

  • 255/75-16

Accepts P-Metric and Inches
/ R
/ R
215/30r20 vs 215/35r19 Tire Comparison Side By Side
  215/30-20 215/35-19 Difference
Diameter inches (mm) 25.08 (637) 24.93 (633.1) -0.15 (-3.9) -0.6%
Width inches (mm) 8.46 (215) 8.46 (215) 0 (0) 0%
Circum. inches (mm) 78.79 (2001.19) 78.3 (1988.94) -0.48 (-12.25) -0.6%
Sidewall Height inches (mm) 2.54 (64.5) 2.96 (75.25) 0.42 (10.75) 16.7%
Revolutions per mile (km) 804.19 (499.7) 809.15 (502.78) 4.95 (3.08) 0.6%

Speedometer Difference

Speedo Reading Actual Speed
20 mph (32.19 km/h)19.88 mph (31.99 km/h)
25 mph (40.23 km/h)24.85 mph (39.99 km/h)
30 mph (48.28 km/h)29.82 mph (47.98 km/h)
35 mph (56.33 km/h)34.79 mph (55.98 km/h)
40 mph (64.37 km/h)39.76 mph (63.98 km/h)
45 mph (72.42 km/h)44.72 mph (71.98 km/h)
50 mph (80.47 km/h)49.69 mph (79.97 km/h)
55 mph (88.51 km/h)54.66 mph (87.97 km/h)
60 mph (96.56 km/h)59.63 mph (95.97 km/h)
65 mph (104.61 km/h)64.6 mph (103.97 km/h)
70 mph (112.65 km/h)69.57 mph (111.96 km/h)
75 mph (120.7 km/h)74.54 mph (119.96 km/h)
80 mph (128.75 km/h)79.51 mph (127.96 km/h)
85 mph (136.79 km/h)84.48 mph (135.96 km/h)
90 mph (144.84 km/h)89.45 mph (143.95 km/h)
95 mph (152.89 km/h)94.42 mph (151.95 km/h)
100 mph (160.93 km/h)99.39 mph (159.95 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
20592392257626902813290029973111326834263601374139964276449546354714500354066283
Better Fuel Economy Factory Ratios Increased Power

Most Popular 215/30-R20 Comparisons

To Top