235/55R19 vs 255/50R19
255/50R19 is 3.0 mm shorter than 235/55R19 in overall diameter (−0.4%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 255/50R19 fitted, the speedometer reads 100 km/h when you are doing 99.6 km/h.
Dimensions side by side
| 235/55R19 | 255/50R19 | |
|---|---|---|
| Overall diameter | 741 mm (29.2″) | 738 mm (29.1″) |
| Section width | 235 mm | 255 mm |
| Sidewall height | 129 mm | 128 mm |
| Rim | 19″ | 19″ |
| Revolutions per km | 430 | 431 |
| In stock | 126 tires from $178.00 | 56 tires from $160.00 |
What changes
- Overall diameter: 255/50R19 is 3.0 mm shorter (−0.4%).
- Speedometer: reads 100 km/h at an actual 99.6 km/h with 255/50R19.
- 255/50R19 is 20 mm wider, so check clearance and the recommended rim width.
- Choose a load index at least as high as the one on your door placard.
Vehicles that came with both sizes
Vehicles that use 235/55R19
Vehicles that use 255/50R19
See every alternate size for 235/55R19
Frequently asked questions
Can I use 255/50R19 instead of 235/55R19?
Usually, yes: 255/50R19 is within 3% of the overall diameter of 235/55R19 (−0.4%). Use wheels of the right size and width, match or exceed the original load index, and check clearance at full steering lock.
How much does the speedometer change between 235/55R19 and 255/50R19?
With 255/50R19 instead of 235/55R19, the speedometer shows 100 km/h when you are actually doing 99.6 km/h.
Which vehicles came with both 235/55R19 and 255/50R19?
Both sizes were original equipment, on different trims or packages, on the 2015–2024 Porsche Macan, 2021–2024 Volkswagen ID.4, 2022–2024 Audi Q4 e-tron.