275/65R16 vs 295/60R16
Going from one to the other changes the overall height by -0.5 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 275/65R16 | 295/60R16 | Change |
|---|---|---|---|
| Overall height | 30.1" | 29.9" | -0.5 % |
| Sidewall | 7.04" | 6.97" | -1.0 % |
| Section width | 275 mm | 295 mm | +7.3 % |
| Circumference | 94.5" | 94.0" | -0.5 % |
| Revs per mile | 671 | 674 | +0.5 % |
| Axle height | 15.04" | 14.97" | -1.8 mm |
| Approved rim width | 7.5–10" | 8.5–11" | overlap 8.5–10" |
Both are approved on a rim 8.5" to 10" wide. If yours is in that band, this is a tire change and nothing else.
What the speedometer will say
Calibrated for 275/65R16. Fit 295/60R16 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 29.9 mph | -0.1 |
| 50 mph | 49.8 mph | -0.2 |
| 70 mph | 69.7 mph | -0.3 |
| 90 mph | 89.6 mph | -0.4 |
The odometer drifts with it. Ten thousand miles on the dial are really 9,954 on the road, so it over-counts by 46. At a true 70 mph the first turns 782 times a minute, the second 786.