2019-2025 BMW X5: the quick answer
The 2019-2025 BMW X5 ships with 275/45R20 tires on the base trim — that's an overall diameter of 29.7″. The 275 mm width and 45% sidewall ratio give you 123.8 mm of sidewall cushion between the rim and the road.
Tire fitment
2019-2025 BMW X5 tire size
The 2019-2025 BMW X5 base tire size is 275/45R20 — 275 mm wide with a 45% aspect ratio on 20″ rims. 3 OEM sizes are available across trims.
2019-2025 BMW X5
275/45R2029.7″ overall diameter · 123.8 mm sidewall · ~678 rev/mi
| Trim | Tire size | Rim | Diameter | vs Base |
|---|---|---|---|---|
| xDrive40i/M60i ★ | 275/45R20 | 9×20″ | 29.7″ (755.5 mm) | — |
| optional (front) | 275/40R21 | 9.5×21″ | 29.7″ (753.4 mm) | -0.28% |
| optional (rear) | 315/35R21 | 10.5×21″ | 29.7″ (753.9 mm) | -0.21% |
Staggered: 275/40R21 front, 315/35R21 rear.
Before you buy tires
Match the load index and speed rating from your door-jamb placard — not just the size. If you're switching sizes, keep the overall diameter within ~3% to avoid speedometer error and potential ABS/traction-control issues.
Factory fitment for the 2019-2025 BMW X5; verify against your door-jamb placard or owner's manual.
FAQ
What tire size does the 2019-2025 BMW X5 use?
The base 2019-2025 BMW X5 uses 275/45R20 tires — 275 mm wide, 45% aspect ratio, on 20-inch rims. The overall diameter is 29.7″ (755.5 mm). Higher trims use different sizes — see the table above. Confirm against your door-jamb placard.
Can I use a different tire size on my X5?
Yes, within limits. Keep the overall diameter within about 3% of 29.7″ to avoid speedometer error and clearance issues. A wider tire may improve grip, but match the load and speed ratings your X5 requires.
What is the overall diameter of 275/45R20 tires?
275/45R20 tires have an overall diameter of 29.7″ (755.5 mm), with a 123.8 mm sidewall height. That's about 678 revolutions per mile.
The 2019-2025 BMW X5 tire sizes shown are OEM factory fitments. Confirm your exact tire size, load rating, and speed rating against the door-jamb placard or owner's manual before buying tires.