Tire Size Box

225/60R14 vs 225/70R14

225/70R14 compared with 225/60R14

+7.2% diameter, 0.0" width

225/70R14 is 26.40" tall vs 24.63". More than the 3% rule of thumb, so check carefully before switching.

24.6"14" rim5.3"8.9" wide
225/60R14 (solid) compared with 225/70R14 (dashed outline), drawn to scale

With 225/70R14 tires, when your speedometer says 60 mph you are really going

64.3 mph

225/70R14 is +1.77 inches (+7.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

225/60R14225/70R14Difference%
Overall diameter24.63"26.40"+1.77"+7.2%
Section width8.86"8.86"0.00"0.0%
Sidewall height5.31"6.20"+0.89"+16.7%
Circumference77.38"82.94"+5.57"+7.2%
Revolutions per mile818.8763.9−54.9−6.7%

Speedometer difference

If your vehicle came with 225/60R14 and you fit 225/70R14, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.4 mph+1.4 mph
30 mph32.2 mph+2.2 mph
40 mph42.9 mph+2.9 mph
50 mph53.6 mph+3.6 mph
60 mph64.3 mph+4.3 mph
65 mph69.7 mph+4.7 mph
70 mph75.0 mph+5.0 mph
75 mph80.4 mph+5.4 mph
80 mph85.8 mph+5.8 mph

Each size on its own

Questions

Which is bigger, 225/60R14 or 225/70R14?
225/70R14 is taller by 1.77 inches (26.40" vs 24.63"). 225/60R14 is the same width.
Can I replace 225/60R14 with 225/70R14?
It is not recommended without checking carefully. The diameter difference is +7.2%, 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 225/70R14 change my speedometer?
When your speedometer reads 60 mph with 225/70R14 fitted (calibrated for 225/60R14), your real speed is 64.3 mph. Your odometer will under-count miles by about 7.2%.
Will 225/70R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.89 inches of ground clearance at the axle.

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