Tire Size Box

205/65R13 vs 225/65R13

225/65R13 compared with 205/65R13

+4.4% diameter, +0.8" width

225/65R13 is 24.52" tall vs 23.49". More than the 3% rule of thumb, so check carefully before switching.

23.5"13" rim5.2"8.1" wide
205/65R13 (solid) compared with 225/65R13 (dashed outline), drawn to scale

With 225/65R13 tires, when your speedometer says 60 mph you are really going

62.6 mph

225/65R13 is +1.02 inches (+4.4%) in overall diameter. That is more than the 3% most shops and makers recommend.

205/65R13225/65R13Difference%
Overall diameter23.49"24.52"+1.02"+4.4%
Section width8.07"8.86"+0.79"+9.8%
Sidewall height5.25"5.76"+0.51"+9.8%
Circumference73.80"77.02"+3.22"+4.4%
Revolutions per mile858.5822.7−35.8−4.2%

Speedometer difference

If your vehicle came with 205/65R13 and you fit 225/65R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.9 mph+0.9 mph
30 mph31.3 mph+1.3 mph
40 mph41.7 mph+1.7 mph
50 mph52.2 mph+2.2 mph
60 mph62.6 mph+2.6 mph
65 mph67.8 mph+2.8 mph
70 mph73.1 mph+3.1 mph
75 mph78.3 mph+3.3 mph
80 mph83.5 mph+3.5 mph

Each size on its own

Questions

Which is bigger, 205/65R13 or 225/65R13?
225/65R13 is taller by 1.02 inches (24.52" vs 23.49"). 225/65R13 is wider by 0.79 inches.
Can I replace 205/65R13 with 225/65R13?
It is not recommended without checking carefully. The diameter difference is +4.4%, 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 225/65R13 change my speedometer?
When your speedometer reads 60 mph with 225/65R13 fitted (calibrated for 205/65R13), your real speed is 62.6 mph. Your odometer will under-count miles by about 4.4%.
Will 225/65R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.51 inches of ground clearance at the axle.

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