195/50R14 vs 175/60R14
Going from one to the other changes the overall height by +2.7 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 195/50R14 | 175/60R14 | Change |
|---|---|---|---|
| Overall height | 21.7" | 22.3" | +2.7 % |
| Sidewall | 3.84" | 4.13" | +7.7 % |
| Section width | 195 mm | 175 mm | -10.3 % |
| Circumference | 68.1" | 70.0" | +2.7 % |
| Revs per mile | 930 | 906 | -2.7 % |
| Axle height | 10.84" | 11.13" | +7.5 mm |
| Approved rim width | 5.5–7" | 5–6" | overlap 5.5–6" |
Both are approved on a rim 5.5" to 6" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 195/50R14. Fit 175/60R14 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.8 mph | +0.8 |
| 50 mph | 51.4 mph | +1.4 |
| 70 mph | 71.9 mph | +1.9 |
| 90 mph | 92.5 mph | +2.5 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,272 on the road, so it under-counts by 272. At a true 70 mph the first turns 1085 times a minute, the second 1057.