Tire Size Box

205/80R13 vs 225/80R13

225/80R13 compared with 205/80R13

+4.9% diameter, +0.8" width

225/80R13 is 27.17" tall vs 25.91". More than the 3% rule of thumb, so check carefully before switching.

25.9"13" rim6.5"8.1" wide
205/80R13 (solid) compared with 225/80R13 (dashed outline), drawn to scale

With 225/80R13 tires, when your speedometer says 60 mph you are really going

62.9 mph

225/80R13 is +1.26 inches (+4.9%) in overall diameter. That is more than the 3% most shops and makers recommend.

205/80R13225/80R13Difference%
Overall diameter25.91"27.17"+1.26"+4.9%
Section width8.07"8.86"+0.79"+9.8%
Sidewall height6.46"7.09"+0.63"+9.8%
Circumference81.41"85.37"+3.96"+4.9%
Revolutions per mile778.3742.2−36.1−4.6%

Speedometer difference

If your vehicle came with 205/80R13 and you fit 225/80R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.0 mph+1.0 mph
30 mph31.5 mph+1.5 mph
40 mph41.9 mph+1.9 mph
50 mph52.4 mph+2.4 mph
60 mph62.9 mph+2.9 mph
65 mph68.2 mph+3.2 mph
70 mph73.4 mph+3.4 mph
75 mph78.6 mph+3.6 mph
80 mph83.9 mph+3.9 mph

Each size on its own

Questions

Which is bigger, 205/80R13 or 225/80R13?
225/80R13 is taller by 1.26 inches (27.17" vs 25.91"). 225/80R13 is wider by 0.79 inches.
Can I replace 205/80R13 with 225/80R13?
It is not recommended without checking carefully. The diameter difference is +4.9%, 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 225/80R13 change my speedometer?
When your speedometer reads 60 mph with 225/80R13 fitted (calibrated for 205/80R13), your real speed is 62.9 mph. Your odometer will under-count miles by about 4.9%.
Will 225/80R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.63 inches of ground clearance at the axle.

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