195/60R15 vs 195/65R15 at a glance
| Measure | 195/60R15 (current) | 195/65R15 (new) | Difference |
|---|---|---|---|
| Overall height | 24.21 in | 24.98 in | +0.77 in (+3.17%) |
| Width | 7.68 in (195 mm) | 7.68 in (195 mm) | +0 mm |
| Sidewall | 4.61 in | 4.99 in | +0.38 in |
| Wheel | 15 in | 15 in | +0 in |
| Circumference | 76.1 in | 78.5 in | +2.4 in |
| Revs per mile | 833.0 | 807.4 | −25.6 |
Verdict: check clearance and speedometer
Over 3% and up to 5%: worth checking clearance, the speedometer and gearing before you buy. Going from 195/60R15 to 195/65R15 is a 3.2% increase in overall height (+0.77 in), and the vehicle sits about 0.38 in higher. The tire is the same width. The 3% rule of thumb comes from Discount Tire and 1010tires; it is not a guarantee of fit.
True speed and odometer
| Speedometer shows | You are really doing | Difference |
|---|---|---|
| 35 mph | 36.1 mph | +1.1 mph |
| 45 mph | 46.4 mph | +1.4 mph |
| 55 mph | 56.7 mph | +1.7 mph |
| 60 mph | 61.9 mph | +1.9 mph |
| 65 mph | 67.1 mph | +2.1 mph |
| 70 mph | 72.2 mph | +2.2 mph |
| 75 mph | 77.4 mph | +2.4 mph |
Odometer: 1,000 indicated miles is 1,032 real miles, and 10,000 is 10,317.
The math
195/60R15: 15 + 2 × (195 × 60% ÷ 25.4) = 24.21 in. 195/65R15: 15 + 2 × (195 × 65% ÷ 25.4) = 24.98 in. Change = 24.98 ÷ 24.21 − 1 = +3.17%. True speed at 60 = 60 × 24.98 ÷ 24.21 = 61.90 mph.
Check next
- Regear and RPM at cruise for this swap
- Speedometer and odometer correction
- Other sizes within ±3% of 195/60R15
Calculated from the size alone. Real tires vary a little by brand and model, and the loaded radius is a bit smaller. Confirm the wheel width range, clearance, load index and speed rating for your vehicle. See how to read a tire size, the load index chart and the speed rating chart.
Size pages: 195/60R15 · 195/65R15. More swaps: all tire size comparisons.