Honda Prologue tires
The Honda Prologue leaves the factory on 255/60 R19 and 275/45 R21 depending on wheel size, and the 255/60 R19 109H below is the one most owners are replacing. A standard load 109 rating is modest for an electric car and says something about where this one's curb weight sits. The Chevrolet Blazer EV takes the same size.
Every fitment
| Generation | Trim | Wheel | Tire size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | EX and Touring (19in) | 19in | 255/60 R19 | 109 | H | SL | none | see plate |
| Current | Elite (21in) | 21in | 275/45 R21 | 107 | H | SL | 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 tire.
What changes on this car
The Prologue is built by General Motors on its Ultium platform, and its sizes are standard load: 109H on the 19 inch and 107H on the Elite's 21 inch, so the larger wheel actually carries less, 975 kg against 1,030 kg.
Honda fits the Elite's 21 inch tires with a self-sealing inner layer and supplies no repair kit for that trim, which matters when choosing a replacement.
Honda's feature text calls the sizes P255/60 R19 and P275/45 R21, but its specification table and Michelin both give the load indices above.
No tires listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 255/60 R19. Match or exceed every figure in the table above and you cannot go far wrong.
Where these figures come from
- Honda Info Center, 2024 Prologue specifications: tires 255/60R19 109H (EX, Touring), 275/45R21 107H (Elite): https://www.hondainfocenter.com/2024/Prologue/Feature-Guide/Specifications/
- Honda Info Center, 2025 Prologue specifications: tires 255/60R19 109H, 275/45R21 107H: https://www.hondainfocenter.com/2025/Prologue/Feature-Guide/Specifications/
- Honda Info Center, 2024 Prologue wheels and tires (Elite 21in self-sealing): https://www.hondainfocenter.com/2024/Prologue/Feature-Guide/Exterior-Features/Wheels-and-Tires/
- Michelin US vehicle fitment tool (2024 Prologue EX FWD, 255/60R19 109H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/honda/prologue/ex-fwd/255---60R19-109H
- Michelin US vehicle fitment tool (2026 Prologue Touring AWD, 255/60R19 109H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2026/honda/prologue/touring-awd/255---60R19-109H
- Michelin US vehicle fitment tool (2024 Prologue Elite, 275/45R21 107H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/honda/prologue/elite/275---45R21-107H
- Michelin US vehicle fitment tool (2025 Prologue Elite, 275/45R21 107H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2025/honda/prologue/elite/275---45R21-107H
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 tires does the Honda Prologue take?
- It runs 255/60 R19 and 275/45 R21. The exact fitment for your car is on On the driver's door jamb, on the B-pillar.
- Can I fit a cheaper tire to a Honda Prologue?
- Only at 255/60 R19 109H or better. That is the figure to hold: a tire below the load index, the speed rating or the construction class is not a cheaper one, it is the wrong one.