If wet braking matters most
Graded A for wet grip, and nothing else that fits is graded higher. Graded C for rolling resistance. EPREL registration 2744391.
Kumho PS71
rear 255/45 R20 105Y XL, no front in this range
£143.19inc VATFull spec
BMW iX3 tyres
The BMW iX3 leaves the factory on 245/45 R20 and 245/50 R19 and 255/35 R22 and 255/45 R20 depending on wheel size, and the 245/50 R19 105W XL below is the one most owners are replacing. XL is not optional here; it is what the car was type approved on. It is staggered: a 245 section at the front and a 275 at the back, so the two can never be swapped across axles and the rear goes first. The BMW i7 takes the same size.
Every fitment
| Generation | Trim | Wheel | Tyre size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | First generation, 2020-2025 (19in) | 19in | 245/50 R19 | 105 | W | XL | none | see plate |
| Current | First generation, 2020-2025 (20in) | 20in | 245/45 R20 front, 275/40 R20 rear | 103 | W | XL | none | see plate |
| Current | Neue Klasse, 2025-on (20in) | 20in | 255/45 R20 | 105 | W | XL | none | see plate |
| Current | Neue Klasse, 2025-on (22in) | 22in | 255/35 R22 front, 275/35 R22 rear | 99 | Y | XL | none | see plate |
Your own placard is the authority. You will find it on the on the driver's door jamb, on the B-pillar. Where it disagrees with this page, it wins. Match or exceed the size, load index, speed rating and construction class it gives, and use its pressure figure rather than anything printed on the tyre.
What changes on this car
Two different cars share the name. The first iX3 was built on the X3 body from 2020 to 2025; the Neue Klasse iX3 that replaced it in 2025 is a new platform and runs a wider 255 front tyre where the old car used 245.
BMW's 2020 data puts the first-generation car on a square 245/50 R19 105W XL, while its 20in option is staggered with a 275/40 rear. The first generation is W-rated on both sizes, as is the new car's standard 20in.
For the Neue Klasse iX3 50 xDrive, BMW quotes a 1,565 kg rear axle limit and fits 255/45 R20 105W XL as standard, 1,850 kg for the rear pair. The 22in option is staggered and moves to a Y rating.
Michelin's UK data lists several 21in combinations for the new car, square and staggered, without agreeing on one, so the 21in is not given here.
Which one to buy
How these were chosen. Everything here already clears this vehicle's own load index, speed rating and construction class. Each heading is a question about use rather than a ranking. The whole method.
If range is what you care about
Graded B for rolling resistance, the best of anything here, and that is the figure that shows on the range display. Graded A for wet grip, and nothing else that fits is graded higher. EPREL registration 2422476.
Nexen N'FERA Sport
rear 255/45 R20 105W XL, no front in this range
£192.32inc VATFull spec
If you want the cabin quiet
Measured at 72 decibels. Graded A for wet grip, and nothing else that fits is graded higher. EPREL registration 2548644.
Michelin Pilot Sport EV
rear 255/45 R20 105W XL, no front in this range
£299.70inc VATFull spec
If it gets properly cold where you are
A winter tyre, so a second set rather than a replacement for what is on the car now. Graded D for wet grip. Graded B for rolling resistance, the best of anything here, and that is the figure that shows on the range display. EPREL registration 727673.
Nokian Hakkapeliitta R5 EV
rear 255/45 R20 105T XL, no front in this range
£147.99inc VATFull spec
Rated below the speed this vehicle left the factory at, which is permitted for a winter tyre and is why it carries a T or an R. The load index and the construction class still match. Do not exceed the tyre's own rating while it is fitted.
Everything that fits the 255/45 R20
Season
Order by
Ordering is by the registered label figure, not by anything we think of them.
summerExtra load
Kumho Tire · Manufacturer material, used by permission
Graded A for fuel efficiency in several of the sizes heavy electric cars use, which is a harder result on a two tonne car than it looks.
Built for EVsWinterExtra load
Nokian Tyres plc · Manufacturer material, used by permission
A studless winter tyre built for the weight and the rolling resistance demands of an electric car.
Rated below the speed this vehicle left the factory at, which is permitted for a winter tyre and is why it carries a T or an R. The load index and the construction class still match. Do not exceed the tyre's own rating while it is fitted.
summerExtra load
Nexen Tire Corporation · Manufacturer material, used by permission
A Korean-built summer tyre that turns up as original equipment more often than its profile suggests, graded A for fuel efficiency.
summerExtra load
Continental AG · Manufacturer material, used by permission
A high performance summer tyre available in the Y rated sizes that heavy, fast electric cars are specified with.
Built for EVsSummerExtra load
Manufacture Francaise des Pneumatiques Michelin · Manufacturer material, used by permission
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A performance summer tyre built for heavy, fast electric cars, with an acoustic foam liner bonded inside the cavity.
Where these figures come from
- BMW Group media information 07/2020, BMW iX3 technical data (tyres front/rear 245/50 R19 105W XL): https://www.press.bmwgroup.com/global/article/attachment/T0314265EN/457881
- BMW Group media information 09/2025, BMW iX3 50 xDrive technical data (tyres front/rear 255/45 R20 105W XL; max axle load 1305/1565 kg): https://www.press.bmwgroup.com/global/article/attachment/T0451998EN/636975
- Michelin UK vehicle fitment tool (2026 ix3 ev-286-210-kw; 245/50 R19 105W): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2026/ev-286-210-kw/245---50-R-19-105W
- Michelin UK vehicle fitment tool (2025 ix3 ev-286-210-kw; 245/50 R19 105W): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2025/ev-286-210-kw/245---50-R-19-105W
- Michelin UK vehicle fitment tool (2026 ix3 ev-286-210-kw; 245/45 R20 103W front, 275/40 R20 106W rear): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2026/ev-286-210-kw/245---45-R-20-103W_275---40-R-20-106W
- Michelin UK vehicle fitment tool (2025 ix3 ev-286-210-kw; 245/45 R20 103W front, 275/40 R20 106W rear): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2025/ev-286-210-kw/245---45-R-20-103W_275---40-R-20-106W
- Michelin UK vehicle fitment tool (2026 ix3-50-xdrive ev-469-345-kw; 255/45 R20 105W): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3-50-xdrive/2026/ev-469-345-kw/255---45-R-20-105W
- Michelin UK vehicle fitment tool (2026 ix3 40-ev-320-235-kw; 255/45 R20 105W): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2026/40-ev-320-235-kw/255---45-R-20-105W
- Michelin UK vehicle fitment tool (2026 ix3-50-xdrive ev-469-345-kw; 255/35 R22 99Y front, 275/35 R22 104Y rear): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3-50-xdrive/2026/ev-469-345-kw/255---35-R-22-99Y_275---35-R-22-104Y
- Michelin UK vehicle fitment tool (2026 ix3 40-ev-320-235-kw; 255/35 R22 99Y front, 275/35 R22 104Y rear): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/bmw/ix3/ix3/2026/40-ev-320-235-kw/255---35-R-22-99Y_275---35-R-22-104Y
Including the manufacturer's own published figure. Neither source is standing next to your vehicle, which is why the placard still wins.
Spotted something wrong? A correction to a fitment is the most useful thing you can send us and it goes to the front of the queue. Tell us.
Fit tyres for a living? Trade accounts get volume pricing on every tyre we list. Open an account.
Other cars on the same size
Common questions
- What size tyres does the BMW iX3 take?
- It runs 245/45 R20 and 245/50 R19 and 255/35 R22 and 255/45 R20. The exact fitment for your car is on On the driver's door jamb, on the B-pillar.
- Can I fit a cheaper tyre to a BMW iX3?
- Only at 245/50 R19 105W XL or better. That is the figure to hold: a tyre below the load index, the speed rating or the construction class is not a cheaper one, it is the wrong one.