Tire Size Box

215/65R13 vs 215/70R13

215/70R13 compared with 215/65R13

+3.5% diameter, 0.0" width

215/70R13 is 24.85" tall vs 24.00". More than the 3% rule of thumb, so check carefully before switching.

24.0"13" rim5.5"8.5" wide
215/65R13 (solid) compared with 215/70R13 (dashed outline), drawn to scale

With 215/70R13 tires, when your speedometer says 60 mph you are really going

62.1 mph

215/70R13 is +0.85 inches (+3.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

215/65R13215/70R13Difference%
Overall diameter24.00"24.85"+0.85"+3.5%
Section width8.46"8.46"0.00"0.0%
Sidewall height5.50"5.93"+0.42"+7.7%
Circumference75.41"78.07"+2.66"+3.5%
Revolutions per mile840.2811.6−28.6−3.4%

Speedometer difference

If your vehicle came with 215/65R13 and you fit 215/70R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph20.7 mph+0.7 mph
30 mph31.1 mph+1.1 mph
40 mph41.4 mph+1.4 mph
50 mph51.8 mph+1.8 mph
60 mph62.1 mph+2.1 mph
65 mph67.3 mph+2.3 mph
70 mph72.5 mph+2.5 mph
75 mph77.6 mph+2.6 mph
80 mph82.8 mph+2.8 mph

Each size on its own

Questions

Which is bigger, 215/65R13 or 215/70R13?
215/70R13 is taller by 0.85 inches (24.85" vs 24.00"). 215/65R13 is the same width.
Can I replace 215/65R13 with 215/70R13?
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 215/70R13 change my speedometer?
When your speedometer reads 60 mph with 215/70R13 fitted (calibrated for 215/65R13), your real speed is 62.1 mph. Your odometer will under-count miles by about 3.5%.
Will 215/70R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.42 inches of ground clearance at the axle.

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