305/40R20 tires
Prices, best picks and current deals for 305/40R20, a SUVs size fitted to BMW X5, BMW X6 and more.
What 305/40R20 tires cost
Kumho Crugen HP71
Lowest price that still brakes and wears acceptably. Fine for a second car or low annual mileage.
Bridgestone Dueler H/P Sport
The value sweet spot: long mileage warranty, solid wet grip, sane price.
Michelin Pilot Sport 4 SUV
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, based on what the big US online retailers charge for this size. A set of four in the mid range comes to roughly $1,040 to $1,320, and a brand rebate can take another $50 to $110 off, see this month's deals.
About the 305/40R20 size
Rear half of the staggered 20 in BMW SUV setup (275/45R20 front). Star-marked run-flats were common from the factory.
The numbers mean: 305 mm section width, sidewall height 40 % of that width, and a 20-inch rim. Overall diameter works out to about 29.6 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 305/40R20
- BMW X5 (2019-2024, 20 in rear)
- BMW X6 (2020-2024, 20 in rear)
Confirm on the door-jamb sticker before ordering. Optional wheel packages often change the size within the same model.
Which type of 305/40R20 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 305/40R20 tires cost?
Expect $200–$250 per tire for a budget brand, $260–$330 for a mid-range tire like the Bridgestone Dueler H/P Sport, and $340–$450 for a premium tire like the Michelin Pilot Sport 4 SUV. Add roughly $15 to $45 per tire for mounting and balancing.
What vehicles use 305/40R20 tires?
305/40R20 is original equipment on BMW X5 (2019-2024, 20 in rear), BMW X6 (2020-2024, 20 in rear), 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 305/40R20 tire?
For most drivers our mid-range pick, the Bridgestone Dueler H/P Sport, 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 Pilot Sport 4 SUV is worth the extra. On a tight budget the Kumho Crugen HP71 is a sound choice.
Can I replace just one or two 305/40R20 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.