Tire Size Box

205/65R19 vs 225/65R19

225/65R19 compared with 205/65R19

+3.5% diameter, +0.8" width

225/65R19 is 30.52" tall vs 29.49". More than the 3% rule of thumb, so check carefully before switching.

29.5"19" rim5.2"8.1" wide
205/65R19 (solid) compared with 225/65R19 (dashed outline), drawn to scale

With 225/65R19 tires, when your speedometer says 60 mph you are really going

62.1 mph

225/65R19 is +1.02 inches (+3.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

205/65R19225/65R19Difference%
Overall diameter29.49"30.52"+1.02"+3.5%
Section width8.07"8.86"+0.79"+9.8%
Sidewall height5.25"5.76"+0.51"+9.8%
Circumference92.65"95.87"+3.22"+3.5%
Revolutions per mile683.8660.9−22.9−3.4%

Speedometer difference

If your vehicle came with 205/65R19 and you fit 225/65R19, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.0 mph+1.0 mph
40 mph41.4 mph+1.4 mph
50 mph51.7 mph+1.7 mph
60 mph62.1 mph+2.1 mph
65 mph67.3 mph+2.3 mph
70 mph72.4 mph+2.4 mph
75 mph77.6 mph+2.6 mph
80 mph82.8 mph+2.8 mph

Each size on its own

Questions

Which is bigger, 205/65R19 or 225/65R19?
225/65R19 is taller by 1.02 inches (30.52" vs 29.49"). 225/65R19 is wider by 0.79 inches.
Can I replace 205/65R19 with 225/65R19?
It is not recommended without checking carefully. The diameter difference is +3.5%, more than the 3% most shops and makers allow. It will throw off the speedometer and may affect ABS, stability control and clearance.
How much will 225/65R19 change my speedometer?
When your speedometer reads 60 mph with 225/65R19 fitted (calibrated for 205/65R19), your real speed is 62.1 mph. Your odometer will under-count miles by about 3.5%.
Will 225/65R19 lift my vehicle?
Ride height changes by half the diameter difference: +0.51 inches of ground clearance at the axle.

Other comparisons