195/70R14 vs 195/75R14

195/75R14 is 0.8" taller than 195/70R14 (3.1%)

Diameter difference+3.10%diameter 24.75" → 25.52"
195/70R14195/75R14
195/70R14195/75R14Difference
Overall diameter24.75"25.52"+0.77"
Section width7.68"7.68"±0.00"
Sidewall height5.37"5.76"+0.38"
Circumference77.7"80.2"+2.4"
Revolutions per mile815790−25
Wheel diameter14"14"±0"

Speedometer

ShowsActualDiff
30 mph30.9 mph+0.9
45 mph46.4 mph+1.4
60 mph61.9 mph+1.9
70 mph72.2 mph+2.2
80 mph82.5 mph+2.5

Gear ratio to match

CurrentEquivalent
3.423.53
3.553.66
3.733.85
4.104.23

195/75R14 is 0.77" taller than 195/70R14, a +3.10% change in diameter. That is more than the 3% many tire shops use as a limit, so plan on recalibrating the speedometer and checking ABS and stability control.

Ground clearance changes by 0.38" (half the diameter change), and the tire needs 0.38" more room above it.

Both tires are the same width, 7.68".

Both fit a 14" wheel; the sidewall is 0.38" taller on 195/75R14.

Details: 195/70R14 in inches · 195/75R14 in inches · change sizes in the calculator

FAQ

What is the difference between 195/70R14 and 195/75R14?

195/75R14 is 0.77" taller (+3.10%) and 0.00" wider than 195/70R14.

Will 195/75R14 change my speedometer?

Yes, by +3.10%. When the speedometer shows 60 mph you would be going 61.9 mph.

Can I replace 195/70R14 with 195/75R14?

It is a +3.1% diameter change, larger than the common 3% guideline, so check clearance and plan to recalibrate.