If wet braking matters most
Graded A for wet grip, and nothing else that fits is graded higher. Graded B for rolling resistance. EPREL registration 2853258.

The Hyundai Ioniq 6 leaves the factory on 225/55 R18 and 245/40 R20 depending on wheel size, and the 225/55 R18 98W below is the one most owners are replacing. A standard load 98 rating is modest for an electric car and says something about where this one's curb weight sits. The Mini Countryman Electric takes the same size.
| Generation | Trim | Wheel | Tire size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | Standard Range (18in) | 18in | 225/55 R18 | 98 | W | SL | none | see plate |
| Current | 20in wheels | 20in | 245/40 R20 | 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 tire.
The Ioniq 6 is shaped for efficiency, and the 18 inch wheel with its 225/55 R18 suits that best: a narrower contact patch and more sidewall than a larger wheel gives.
The 20 inch option runs 245/40 R20 at Y, a lower and wider tire than the 18's 225/55 R18. A 40 profile leaves about 98mm of sidewall, so the bigger wheel costs range, ride and tires alike.
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.
Graded A for wet grip, and nothing else that fits is graded higher. Graded B for rolling resistance. EPREL registration 2853258.
Graded A for rolling resistance, the best of anything here, and that is the figure that shows on the range display. Graded B for wet grip. EPREL registration 2245816.
Ordering is by the registered label figure, not by anything we think of them.
Graded A for fuel efficiency in several of the sizes heavy electric cars use, which is a harder result on a two ton car than it looks.
A Korean-built summer tire that turns up as original equipment more often than its profile suggests, graded A for fuel efficiency.
Designed for electric cars from the ground up rather than adapted from a combustion tire, and the winner of the 2025 Auto Bild EV tire test.
A touring summer tire built with Bridgestone's Enliten construction, which cuts weight and rolling resistance across the range rather than in one model.
Every figure here comes from one tire maker's own fitment data, checked across different years or trims. That is a second look rather than a second opinion, so check the label on your door jamb before you buy.