By the Rims & Tires Team
Compiled & reviewed by our West Georgia tire & wheel research team · Updated 2026-07-17
The BMW X4 is a mid-size SAC (Sports Activity Coupe) — effectively the coupe-bodied sibling of the X3. It rides lower than the X3 for sportier handling at the expense of some cargo space. Tire selection for the X4 follows X3 logic at the base and xDrive30i trims, but the X4 M40i and X4 M Competition have their own performance-biased fitments that diverge significantly from the standard trims.
BMW X4 Tire Sizes by Trim
The standard BMW X4 xDrive30i ships on 19-inch wheels with 245/50R19 all-season tires in the square base configuration, which allows rotation. The optional 20-inch wheel package uses 245/45R20 front and 275/40R20 rear, a staggered setup that delivers better cornering stance but prevents rotation.
The X4 M40i is offered with the same 245/50R19 square base size, the 20-inch staggered 245/45R20 front / 275/40R20 rear fitment, or a 21-inch staggered upgrade at 245/40R21 front and 275/35R21 rear. The staggered setups are not rotatable.
The X4 M Competition is available with 21-inch wheels using 255/40R21 front and 265/40R21 rear — a wider staggered setup with very low profile sidewalls that maximizes handling precision and minimizes pothole forgiveness. Performance summer tires are typically fitted from the factory on M Competition.
Important: Staggered setups (different front/rear sizes) cannot be rotated. This increases rear tire wear on rear-biased configurations and means replacing rear tires more frequently.
Best All-Season Tire Options for the X4
For the 245/50R19 base configuration: the Michelin CrossClimate 2 or Continental CrossContact RX are strong all-season choices for X4 owners who want year-round capability without a dedicated winter tire set. Both carry 3PMSF winter ratings.
For the 20-inch staggered setup (245/45R20 front / 275/40R20 rear): the Michelin Pilot Sport A/S 4 in both sizes is the benchmark UHP all-season choice. The Continental ExtremeContact DWS06+ is the strong alternative at a lower price point.
Matching brands and compounds front-to-rear on a staggered setup is important. Mismatched grip levels between axles create handling imbalance in emergency situations. Always replace both axles with the same tire model.
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Best Performance and Summer Tires for the X4 M40i
For the X4 M40i on 20-inch staggered fitment: the Michelin Pilot Sport 4S in 245/45R20 / 275/40R20 is the highest-performing summer replacement available. Exceptional dry and wet grip, the preferred choice for spirited driving.
The Continental SportContact 7 is a strong alternative that Continental has developed specifically for high-performance staggered applications — excellent wet grip and track-capable dry performance.
For owners who want high-performance characteristics with four-season usability: the Pirelli P Zero All Season Plus (Elect) is available for some X4 M40i fitments and delivers near-summer performance with all-weather certification.
Frequently asked
What size tires does the BMW X4 use?
Depends on trim and wheel package. Base X4 xDrive30i: 245/50R19 (standard 19-inch square) or 245/45R20 front / 275/40R20 rear (optional 20-inch staggered). X4 M40i: same 20-inch staggered fitment, or 245/40R21 front / 275/35R21 rear (optional 21-inch). X4 M Competition: 255/40R21 front / 265/40R21 rear (staggered). Verify with your door jamb sticker.
Can you rotate BMW X4 tires?
Only on the base 19-inch square setup (245/50R19 all four corners). All staggered configurations (20-inch and 21-inch) cannot be rotated front-to-rear because the front and rear tires are different sizes. Directional tires can be dismounted and remounted on the opposite side of the same axle, but not moved between axles on a staggered setup.
What are the best all-season tires for the BMW X4?
The Michelin Pilot Sport A/S 4 is the top recommendation for staggered fitments. The Continental ExtremeContact DWS06+ is the strong value alternative. For the base 19-inch square setup, the Michelin CrossClimate 2 offers excellent all-weather performance including genuine winter capability.
What is the difference between BMW X4 and X3 tires?
Base and xDrive30i trims share the same tire sizes. The X4 M40i and X3 M40i also share fitments. The primary difference is that the X4 M Competition uses a wider staggered setup (255/40R21 / 265/40R21) versus the standard M40i setup, with performance-biased summer tires from the factory on the M Competition.
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Last updated 2026-07-17. General guidance only — confirm specifics with a local shop for your exact vehicle.