265/40R22 vs 265/45R21
265/45R21 is 1.0 mm taller than 265/40R22 in overall diameter (+0.1%), within the usual 3% limit, so it can replace it where the wheels and clearance allow. With 265/45R21 fitted, the speedometer reads 100 km/h when you are doing 100.1 km/h.
Dimensions side by side
| 265/40R22 | 265/45R21 | |
|---|---|---|
| Overall diameter | 771 mm (30.4″) | 772 mm (30.4″) |
| Section width | 265 mm | 265 mm |
| Sidewall height | 106 mm | 119 mm |
| Rim | 22″ | 21″ |
| Revolutions per km | 413 | 412 |
| In stock | 17 tires from $168.00 | 22 tires from $195.00 |
What changes
- Overall diameter: 265/45R21 is 1.0 mm taller (+0.1%).
- Speedometer: reads 100 km/h at an actual 100.1 km/h with 265/45R21.
- Wheel size changes from 22″ 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 265/40R22
Vehicles that use 265/45R21
See every alternate size for 265/40R22
Frequently asked questions
Can I use 265/45R21 instead of 265/40R22?
Usually, yes: 265/45R21 is within 3% of the overall diameter of 265/40R22 (+0.1%). 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 265/40R22 and 265/45R21?
With 265/45R21 instead of 265/40R22, the speedometer shows 100 km/h when you are actually doing 100.1 km/h.
Which vehicles came with both 265/40R22 and 265/45R21?
Both sizes were original equipment, on different trims or packages, on the 2018–2024 Land Rover Range Rover Velar, 2019–2024 Jaguar F-Pace, 2023–2024 Polestar Polestar 3, 2024 Audi Q8 e-tron.