Tire Size Box

195/70R13 vs 195/80R13

195/80R13 compared with 195/70R13

+6.5% diameter, 0.0" width

195/80R13 is 25.28" tall vs 23.75". More than the 3% rule of thumb, so check carefully before switching.

23.7"13" rim5.4"7.7" wide
195/70R13 (solid) compared with 195/80R13 (dashed outline), drawn to scale

With 195/80R13 tires, when your speedometer says 60 mph you are really going

63.9 mph

195/80R13 is +1.54 inches (+6.5%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/70R13195/80R13Difference%
Overall diameter23.75"25.28"+1.54"+6.5%
Section width7.68"7.68"0.00"0.0%
Sidewall height5.37"6.14"+0.77"+14.3%
Circumference74.61"79.43"+4.82"+6.5%
Revolutions per mile849.3797.7−51.6−6.1%

Speedometer difference

If your vehicle came with 195/70R13 and you fit 195/80R13, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.3 mph+1.3 mph
30 mph31.9 mph+1.9 mph
40 mph42.6 mph+2.6 mph
50 mph53.2 mph+3.2 mph
60 mph63.9 mph+3.9 mph
65 mph69.2 mph+4.2 mph
70 mph74.5 mph+4.5 mph
75 mph79.8 mph+4.8 mph
80 mph85.2 mph+5.2 mph

Each size on its own

Questions

Which is bigger, 195/70R13 or 195/80R13?
195/80R13 is taller by 1.54 inches (25.28" vs 23.75"). 195/70R13 is the same width.
Can I replace 195/70R13 with 195/80R13?
It is not recommended without checking carefully. The diameter difference is +6.5%, 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 195/80R13 change my speedometer?
When your speedometer reads 60 mph with 195/80R13 fitted (calibrated for 195/70R13), your real speed is 63.9 mph. Your odometer will under-count miles by about 6.5%.
Will 195/80R13 lift my vehicle?
Ride height changes by half the diameter difference: +0.77 inches of ground clearance at the axle.

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