Tire Size Box

225/60R13 vs 225/70R13

225/70R13 compared with 225/60R13

+7.5% diameter, 0.0" width

225/70R13 is 25.40" tall vs 23.63". More than the 3% rule of thumb, so check carefully before switching.

23.6"13" rim5.3"8.9" wide
225/60R13 (solid) compared with 225/70R13 (dashed outline), drawn to scale

With 225/70R13 tires, when your speedometer says 60 mph you are really going

64.5 mph

225/70R13 is +1.77 inches (+7.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

225/60R13225/70R13Difference%
Overall diameter23.63"25.40"+1.77"+7.5%
Section width8.86"8.86"0.00"0.0%
Sidewall height5.31"6.20"+0.89"+16.7%
Circumference74.24"79.80"+5.57"+7.5%
Revolutions per mile853.5794.0−59.5−7.0%

Speedometer difference

If your vehicle came with 225/60R13 and you fit 225/70R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.5 mph+1.5 mph
30 mph32.2 mph+2.2 mph
40 mph43.0 mph+3.0 mph
50 mph53.7 mph+3.7 mph
60 mph64.5 mph+4.5 mph
65 mph69.9 mph+4.9 mph
70 mph75.2 mph+5.2 mph
75 mph80.6 mph+5.6 mph
80 mph86.0 mph+6.0 mph

Each size on its own

Questions

Which is bigger, 225/60R13 or 225/70R13?
225/70R13 is taller by 1.77 inches (25.40" vs 23.63"). 225/60R13 is the same width.
Can I replace 225/60R13 with 225/70R13?
It is not recommended without checking carefully. The diameter difference is +7.5%, 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 225/70R13 change my speedometer?
When your speedometer reads 60 mph with 225/70R13 fitted (calibrated for 225/60R13), your real speed is 64.5 mph. Your odometer will under-count miles by about 7.5%.
Will 225/70R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.89 inches of ground clearance at the axle.

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