265/45R20 vs 295/35R21
295/35R21 is 7.0 mm shorter than 265/45R20 in overall diameter (−0.9%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 295/35R21 fitted, the speedometer reads 100 km/h when you are doing 99.1 km/h.
Dimensions side by side
| 265/45R20 | 295/35R21 | |
|---|---|---|
| Overall diameter | 747 mm (29.4″) | 740 mm (29.1″) |
| Section width | 265 mm | 295 mm |
| Sidewall height | 119 mm | 103 mm |
| Rim | 20″ | 21″ |
| Revolutions per km | 426 | 430 |
| In stock | 38 tires from $162.00 | 21 tires from $319.00 |
What changes
- Overall diameter: 295/35R21 is 7.0 mm shorter (−0.9%).
- Speedometer: reads 100 km/h at an actual 99.1 km/h with 295/35R21.
- 295/35R21 is 30 mm wider, so check clearance and the recommended rim width.
- Wheel size changes from 20″ to 21″: you need wheels in the new size.
- Choose a load index at least as high as the one on your door placard.
Vehicles that came with both sizes
Vehicles that use 265/45R20
Vehicles that use 295/35R21
See every alternate size for 265/45R20
Frequently asked questions
Can I use 295/35R21 instead of 265/45R20?
Usually, yes: 295/35R21 is within 3% of the overall diameter of 265/45R20 (−0.9%). 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 265/45R20 and 295/35R21?
With 295/35R21 instead of 265/45R20, the speedometer shows 100 km/h when you are actually doing 99.1 km/h.
Which vehicles came with both 265/45R20 and 295/35R21?
Both sizes were original equipment, on different trims or packages, on the 2015–2024 Porsche Macan, 2017–2023 Maserati Levante, 2018–2021 Mercedes-Benz GLC 63, 2018–2021 Mercedes-Benz GLC 63 S, 2016–2019 Mercedes-Benz GLE63, 2014–2015 Mercedes-Benz ML63.