255/40R20 vs 295/35R20
295/35R20 is 3.0 mm taller than 255/40R20 in overall diameter (+0.4%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 295/35R20 fitted, the speedometer reads 100 km/h when you are doing 100.4 km/h.
Dimensions side by side
| 255/40R20 | 295/35R20 | |
|---|---|---|
| Overall diameter | 712 mm (28.0″) | 715 mm (28.1″) |
| Section width | 255 mm | 295 mm |
| Sidewall height | 102 mm | 103 mm |
| Rim | 20″ | 20″ |
| Revolutions per km | 447 | 445 |
| In stock | 47 tires from $164.00 | 12 tires from $392.00 |
What changes
- Overall diameter: 295/35R20 is 3.0 mm taller (+0.4%).
- Speedometer: reads 100 km/h at an actual 100.4 km/h with 295/35R20.
- 295/35R20 is 40 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 255/40R20
Vehicles that use 295/35R20
See every alternate size for 255/40R20
Frequently asked questions
Can I use 295/35R20 instead of 255/40R20?
Usually, yes: 295/35R20 is within 3% of the overall diameter of 255/40R20 (+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 255/40R20 and 295/35R20?
With 295/35R20 instead of 255/40R20, the speedometer shows 100 km/h when you are actually doing 100.4 km/h.
Which vehicles came with both 255/40R20 and 295/35R20?
Both sizes were original equipment, on different trims or packages, on the 2022–2024 Porsche Taycan, 2017–2023 Aston Martin DB11, 2019–2023 Aston Martin Vantage, 2017–2022 BMW Alpina, 2009–2016 Porsche Panamera.