215/75R16 vs 195/85R16
Going from one to the other changes the overall height by +1.2 %. That is inside the 3% band, so it fits and the speedometer stays close.
Side by side
| Measure | 215/75R16 | 195/85R16 | Change |
|---|---|---|---|
| Overall height | 28.7" | 29.1" | +1.2 % |
| Sidewall | 6.35" | 6.53" | +2.8 % |
| Section width | 215 mm | 195 mm | -9.3 % |
| Circumference | 90.2" | 91.3" | +1.2 % |
| Revs per mile | 703 | 694 | -1.2 % |
| Axle height | 14.35" | 14.53" | +4.5 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 215/75R16. Fit 195/85R16 and the needle stops telling the truth.
| Needle says | You are doing | Out by |
|---|---|---|
| 30 mph | 30.4 mph | +0.4 |
| 50 mph | 50.6 mph | +0.6 |
| 70 mph | 70.9 mph | +0.9 |
| 90 mph | 91.1 mph | +1.1 |
The odometer drifts with it. Ten thousand miles on the dial are really 10,123 on the road, so it under-counts by 123. At a true 70 mph the first turns 820 times a minute, the second 810.
What drivers reported
215/75R16 carries 11 complaints. Nobody has filed one naming 195/85R16.