195/50R16 vs 195/55R16
195/55R16 is taller than 195/50R16 by 3.24% — a diameter difference of 0.76″.
What changes between 195/50R16 and 195/55R16
Switching from 195/50R16 to 195/55R16 changes overall diameter by +3.24%, a taller tire by 0.76 inches. This sits in the 3–5% caution band, where rubbing at full steering lock or suspension compression becomes possible. Leveling kits or fender-liner trims are often needed on lifted trucks. Section width moves by 0.00″ (195mm → 195mm), which affects contact patch and fender-well clearance. Sidewall height shifts by +0.38″: a taller sidewall softens ride quality and adds off-road bump protection, with some loss of steering crispness. Revs per mile moves by -27, which translates directly to speedometer error — at an indicated 65 mph, actual speed becomes 67.1 mph. Both sizes share the same 16″ rim, so no wheel change is required — this is a pure tire-only swap.
| Spec | 195/50R16 | 195/55R16 |
|---|---|---|
| Overall diameter | 23.68″ | 24.44″ |
| Section width | 7.68″ (195 mm) | 7.68″ (195 mm) |
| Sidewall height | 3.84″ (50%) | 4.22″ (55%) |
| Rim diameter | 16″ | 16″ |
| Circumference | 74.38″ | 76.8″ |
| Revs per mile | 852 | 825 |
Interactive comparison
275/65R18 or "33" for inch aliases195/50R16
- Diameter
- 23.68″ / 601.4mm
- Section Width
- 7.68″
- Sidewall
- 3.84″ / 97.5mm
- Circumference
- 74.38″
- Revs/Mile
- 852
195/55R16
- Diameter
- 24.44″ / 620.9mm
- Section Width
- 7.68″
- Sidewall
- 4.22″ / 107.25mm
- Circumference
- 76.8″
- Revs/Mile
- 825
Speedometer & Diameter Impact
At an indicated 60 mph, your actual speed is 61.95 mph (99.69 km/h). Your speedometer reads 3.24% low versus actual speed.