285/45R21 tires
Prices, best picks and current deals for 285/45R21, a SUVs size fitted to Audi Q7, Audi Q8, Porsche Cayenne and more.
Yes, this fits your Kia EV9. 285/45R21 is the original size on the 2024 Kia EV9.
The sticker inside the driver's door is still the final word, because trim and wheel package can change the size. Back to every Kia EV9 size.
What 285/45R21 tires cost
Kumho Crugen HP71
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Continental CrossContact LX25
The value sweet spot: long mileage warranty, solid wet grip, sane price.
Michelin Primacy Tour A/S
Best wet and snow braking, quietest ride, longest tread life. Worth it if you keep the car.
Prices are per tire, before mounting and balancing. A set of four in the mid range comes to roughly $1,728 to $2,245, and a brand rebate can take another $50 to $110 off, see this month's deals.
Cheapest 285/45R21 right now
Landspider CityTraxx H/P 285/45R21 113W All Season Passenger Tires
$156.96per tire $627.84 for a set of four
51 tires in this size, priced straight from SimpleTire's own product feed, read 29 September 2026. Stock and prices move daily, so check the shop for today's figure.
See every 285/45R21 tire in stock at SimpleTire
About the 285/45R21 size
Audi Q7/Q8 21 in size, V/W/Y with 113 XL load. OE-marked (AO) touring and summer tires from Continental, Pirelli and Michelin.
The numbers mean: 285 mm section width, sidewall height 45 % of that width, and a 21-inch rim. Overall diameter works out to about 31.1 inches. Any replacement has to match all three, and the load index and speed rating on your door sticker must be met or exceeded. Our guide on reading a tire size walks through it.
Vehicles that use 285/45R21
- Audi Q7 (2017-2024, 21 in)
- Audi Q8 (2019-2024, 21 in)
- Porsche Cayenne (2019-2024, 21 in alternative)
- Bentley Bentayga (2017-2024, 21 in)
- Kia EV9 (2024, GT-Line 21 in)
- Lamborghini Urus (2019-2024, 21 in front)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of 285/45R21 tire?
All-Season Tires
Drivers in the South, West Coast and mild parts of the Midwest who want one set of tires that lasts a long time and is quiet.
All-Terrain Tires
Pickup, Jeep and SUV owners who tow, drive gravel or dirt roads, or need real traction in snow and mud.
Highway Truck & SUV Tires
Pickup and SUV owners who commute, haul the family or tow on pavement and want quiet, long tread life and good fuel economy.
Frequently asked questions
How much do 285/45R21 tires cost?
Expect $157–$432 per tire for a budget brand, $432–$561 for a mid-range tire like the Continental CrossContact LX25, and $561–$758 for a premium tire like the Michelin Primacy Tour A/S. A set of four therefore starts at about $628. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 285/45R21 tires?
285/45R21 is original equipment on Audi Q7 (2017-2024, 21 in), Audi Q8 (2019-2024, 21 in), Porsche Cayenne (2019-2024, 21 in alternative), Bentley Bentayga (2017-2024, 21 in), Kia EV9 (2024, GT-Line 21 in) and Lamborghini Urus (2019-2024, 21 in front), among others. Always confirm with the sticker inside your driver's door, because trim levels and wheel packages can change the size.
What is the best 285/45R21 tire?
For most drivers our mid-range pick, the Continental CrossContact LX25, is the sweet spot of price and tread life. If you keep the vehicle a long time or drive in heavy rain and snow, the Michelin Primacy Tour A/S is worth the extra. On a tight budget the Kumho Crugen HP71 is a sound choice.
Can I replace just one or two 285/45R21 tires?
On a front- or rear-wheel-drive car, yes: replace in pairs on the same axle and put the newer pair on the rear. On all-wheel-drive vehicles most makers want all four replaced together, or a new tire shaved to match, because a difference in circumference strains the drivetrain.