175/55R16 vs 165/60R16
Going from one to the other changes the overall height by +0.9 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 175/55R16 | 165/60R16 | Change |
|---|---|---|---|
| Overall height | 23.6" | 23.8" | +0.9 % |
| Sidewall | 3.79" | 3.90" | +2.9 % |
| Section width | 175 mm | 165 mm | -5.7 % |
| Circumference | 74.1" | 74.8" | +0.9 % |
| Revs per mile | 855 | 848 | -0.9 % |
| Axle height | 11.79" | 11.90" | +2.8 mm |
| Approved rim width | 5–6" | 4.5–6" | overlap 5–6" |
Both are approved on a rim 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 175/55R16. Fit 165/60R16 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.3 mph | +0.3 |
| 50 mph | 50.5 mph | +0.5 |
| 70 mph | 70.6 mph | +0.6 |
| 90 mph | 90.8 mph | +0.8 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,092 on the road, so it under-counts by 92. At a true 70 mph the first turns 998 times a minute, the second 989.
What drivers reported
175/55R16 carries 1 complaints. Nobody has filed one naming 165/60R16.