195/50R16 vs 205/40R17
205/40R17 is 0.22 in (5.6 mm) shorter than 195/50R16, a −0.93% diameter difference. With the speedometer set for 195/50R16, an indicated 60 mph is 59.4 mph on 205/40R17.
Is this a safe swap?
Diameter difference −0.93%: under 1%
By overall diameter alone, 205/40R17 is a near match for 195/50R16; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.
| Measurement | 195/50R16 | 205/40R17 | Difference | % diff |
|---|---|---|---|---|
| Overall diameter | 23.68 in (601.4 mm) | 23.46 in (595.8 mm) | −0.22 in (−5.6 mm) | −0.93% |
| Sidewall height | 3.84 in (97.5 mm) | 3.23 in (82.0 mm) | −0.61 in (−15.5 mm) | −15.90% |
| Section width | 7.68 in (195.0 mm) | 8.07 in (205.0 mm) | +0.39 in (+10.0 mm) | +5.13% |
| Circumference | 74.38 in (1,889.4 mm) | 73.69 in (1,871.8 mm) | −0.69 in (−17.6 mm) | −0.93% |
| Revolutions per mile | 852 | 860 | +8 | +0.94% |
| Indicated | Actual on 195/50R16 | Actual on 205/40R17 | Difference |
|---|---|---|---|
| 30 mph | 30.0 mph | 29.7 mph | −0.3 mph |
| 60 mph | 60.0 mph | 59.4 mph | −0.6 mph |
| 75 mph | 75.0 mph | 74.3 mph | −0.7 mph |
Ride-height change: 205/40R17 lowers the vehicle by 0.11 in (2.8 mm) at the axle (half the −5.6 mm diameter difference).
205/40R17 is 0.22 in shorter than 195/50R16 and 10 mm wider, a 0.93% difference in overall diameter.
With the speedometer calibrated for 195/50R16, an indicated 60 mph is actually 59.4 mph on 205/40R17, and revolutions per mile change from 852 to 860.
205/40R17 mounts on a 17-inch wheel, a plus-1 fitment from the 16-inch wheel of 195/50R16.
Size pages
Other comparisons with 195/50R16
- 185/65R14 vs 195/50R16
- 175/70R14 vs 195/50R16
- 205/60R14 vs 195/50R16
- 155/80R14 vs 195/50R16
- 195/65R14 vs 195/50R16
- 165/65R15 vs 195/50R16
- 195/55R15 vs 195/50R16
- 215/50R15 vs 195/50R16
Other comparisons with 205/40R17
- 185/55R15 vs 205/40R17
- 205/50R15 vs 205/40R17
- 175/60R15 vs 205/40R17
- 165/65R15 vs 205/40R17
- 195/55R15 vs 205/40R17
- 215/50R15 vs 205/40R17
- 185/60R15 vs 205/40R17
- 225/50R15 vs 205/40R17
Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.