215/75R14 vs 195/80R14
Going from one to the other changes the overall height by -1.5 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 215/75R14 | 195/80R14 | Change |
|---|---|---|---|
| Overall height | 26.7" | 26.3" | -1.5 % |
| Sidewall | 6.35" | 6.14" | -3.3 % |
| Section width | 215 mm | 195 mm | -9.3 % |
| Circumference | 83.9" | 82.6" | -1.5 % |
| Revs per mile | 755 | 767 | +1.5 % |
| Axle height | 13.35" | 13.14" | -5.3 mm |
| Approved rim width | 6–8" | 5.5–7" | overlap 6–7" |
Both are approved on a rim 6" to 7" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 215/75R14. Fit 195/80R14 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 29.5 mph | -0.5 |
| 50 mph | 49.2 mph | -0.8 |
| 70 mph | 68.9 mph | -1.1 |
| 90 mph | 88.6 mph | -1.4 |
The odometer drifts with it. Ten thousand miles on the dial are really 9,845 on the road, so it over-counts by 155. At a true 70 mph the first turns 881 times a minute, the second 895.
What drivers reported
215/75R14 carries 11 complaints. Nobody has filed one naming 195/80R14.