Tire Size Box

195/70R14 vs 195/80R14

195/80R14 compared with 195/70R14

+6.2% diameter, 0.0" width

195/80R14 is 26.28" tall vs 24.75". More than the 3% rule of thumb, so check carefully before switching.

24.7"14" rim5.4"7.7" wide
195/70R14 (solid) compared with 195/80R14 (dashed outline), drawn to scale

With 195/80R14 tires, when your speedometer says 60 mph you are really going

63.7 mph

195/80R14 is +1.54 inches (+6.2%) in overall diameter. That is more than the 3% most shops and makers recommend.

195/70R14195/80R14Difference%
Overall diameter24.75"26.28"+1.54"+6.2%
Section width7.68"7.68"0.00"0.0%
Sidewall height5.37"6.14"+0.77"+14.3%
Circumference77.75"82.57"+4.82"+6.2%
Revolutions per mile814.9767.3−47.6−5.8%

Speedometer difference

If your vehicle came with 195/70R14 and you fit 195/80R14, here is your real speed for each speedometer reading:

Speedometer showsActual speedDifference
20 mph21.2 mph+1.2 mph
30 mph31.9 mph+1.9 mph
40 mph42.5 mph+2.5 mph
50 mph53.1 mph+3.1 mph
60 mph63.7 mph+3.7 mph
65 mph69.0 mph+4.0 mph
70 mph74.3 mph+4.3 mph
75 mph79.7 mph+4.7 mph
80 mph85.0 mph+5.0 mph

Each size on its own

Questions

Which is bigger, 195/70R14 or 195/80R14?
195/80R14 is taller by 1.54 inches (26.28" vs 24.75"). 195/70R14 is the same width.
Can I replace 195/70R14 with 195/80R14?
It is not recommended without checking carefully. The diameter difference is +6.2%, 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 195/80R14 change my speedometer?
When your speedometer reads 60 mph with 195/80R14 fitted (calibrated for 195/70R14), your real speed is 63.7 mph. Your odometer will under-count miles by about 6.2%.
Will 195/80R14 lift my vehicle?
Ride height changes by half the diameter difference: +0.77 inches of ground clearance at the axle.

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