Toyota bZ4X tyres
The Toyota bZ4X leaves the factory on 235/50 R20 and 235/60 R18 depending on wheel size, and the 235/60 R18 103H below is the one most owners are replacing. A standard load 103 rating is modest for an electric car and says something about where this one's kerb weight sits. The Kia EV5 takes the same size.
Every fitment
| Generation | Trim | Wheel | Tyre size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | 18in | 18in | 235/60 R18 | 103 | H | SL | none | see plate |
| Current | 20in | 20in | 235/50 R20 | 104 | V | 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
The 20 inch fitment differs by market. UK cars list 235/50 R20 104V, an XL rating good for 900 kg, while US cars are listed at a standard-load 100V (800 kg). A US-spec replacement is under-rated for a UK car.
On 18 inch wheels the load index is 103 in both countries, with an H rating in the UK and a V in the US.
In the US the car is sold as the bZ from the 2026 model year, on the same two sizes. It was developed alongside the Subaru Solterra.
No tyres listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 235/60 R18. Match or exceed every figure in the table above and you cannot go far wrong.
Where these figures come from
- Toyota UK media, bZ4X technical specifications: wheel and tyre size 18in 235/60R18, 20in 235/50R20: https://media.toyota.co.uk/wp-content/uploads/sites/5/pdf/220605M-bZ4X-Tech-Spec.pdf
- Toyota UK media, The new Toyota bZ4X press pack (November 2025): 18in 235/60R18, 20in 235/50R20: https://media.toyota.co.uk/wp-content/uploads/sites/5/pdf/251201-bZ4X-Press-Pack.pdf
- Michelin UK vehicle fitment tool (2023 bZ4X 2WD 150 kW, 235/60 R18 103H): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/toyota/bz4x/bz4x-2wd/2023/ev-204-150-kw/235---60-R-18-103H
- Michelin UK vehicle fitment tool (2025 bZ4X 4WD 160 kW, 235/60 R18 103H): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/toyota/bz4x/bz4x-4wd/2025/ev-218-160-kw/235---60-R-18-103H
- Michelin UK vehicle fitment tool (2023 bZ4X 2WD 150 kW, 235/50 R20 104V): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/toyota/bz4x/bz4x-2wd/2023/ev-204-150-kw/235---50-R-20-104V
- Michelin UK vehicle fitment tool (2026 bZ4X 4WD 252 kW, 235/50 R20 104V): https://www.michelin.co.uk/auto/browse-tyres/by-vehicle/toyota/bz4x/bz4x-4wd/2026/ev-343-252-kw/235---50-R-20-104V
- Michelin US vehicle fitment tool (2023 bZ4X XLE, 235/60R18 103V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2023/toyota/bz4x/xle/235---60R18-103V
- Michelin US vehicle fitment tool (2025 bZ4X XLE, 235/60R18 103V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2025/toyota/bz4x/xle/235---60R18-103V
- Michelin US vehicle fitment tool (2024 bZ4X Limited, 235/50R20 100V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/toyota/bz4x/limited/235---50R20-100V
- Michelin US vehicle fitment tool (2025 bZ4X Nightshade, 235/50R20 100V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2025/toyota/bz4x/nightshade/235---50R20-100V
- Michelin US vehicle fitment tool (2026 bZ XLE, 235/60R18 103V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2026/toyota/bz/xle/235---60R18-103V
- Michelin US vehicle fitment tool (2026 bZ Limited, 235/50R20 100V): https://www.michelinman.com/auto/browse-tires/by-vehicle/2026/toyota/bz/limited/235---50R20-100V
- Tyrepress, Bridgestone tyres OE on Toyota bZ4X (Alenza 001 235/60 R18 103H and 235/50 R20 104V XL in Europe): https://www.tyrepress.com/2023/01/bridgestone-tyres-oe-on-toyota-bz4x/
Including the manufacturer's own published figure. Neither source is standing next to your vehicle, which is why the placard still wins.
Other cars on the same size
Common questions
- What size tyres does the Toyota bZ4X take?
- It runs 235/50 R20 and 235/60 R18. 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 Toyota bZ4X?
- Only at 235/60 R18 103H 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.