Commonly, the 2018 Audi Q5 wears 235/60R18 tires on the standard 18-inch wheels; when equipped with larger wheels, sizes such as 255/45R19 on 19-inch rims or 255/40R20 on 20-inch rims are typical. The exact tire size depends on the trim level and wheel package, so always verify the placard on the driver’s door jamb for the precise specification.
Overview of tire sizing by wheel option
The 2018 Q5 was offered with multiple wheel choices, and tire sizes scale with wheel diameter. The following sizes are among the most commonly seen OEM configurations across different trims and packages.
- 18-inch wheels: 235/60R18
- 19-inch wheels: 255/45R19
- 20-inch wheels: 255/40R20
These sizes reflect typical factory configurations for many 2018 Q5 models, but variations can occur based on regional options and specific packages. Always confirm with the vehicle’s tire placard or owner’s manual.
Trim- and package-specific notes
The tire size you see can vary by trim level and optional wheel/tire packages. For example, base models and mid-level trims commonly use 18-inch wheels with 235/60R18, while higher trims or sport-oriented packages may upgrade to 19- or 20-inch wheels with wider tires.
18-inch wheels
Typically 235/60R18, common on Premium and Premium Plus configurations with standard wheels.
19-inch wheels
Often 255/45R19, seen on mid-level trims or with optional wheel packages that upgrade to larger rims.
20-inch wheels
Frequently 255/40R20, associated with higher-end trims or performance-oriented packages. Some regional or model-year variations may use slightly different widths or aspect ratios.
Because tire sizes are tied to the exact wheel configuration, the safest approach is to check the door placard on the driver’s side or consult the owner’s manual for the precise OEM size for your specific vehicle.
How to confirm the exact tire size for your Q5
To determine the precise tire size for a given 2018 Audi Q5, look at the tire sidewall for the code (for example, 235/60R18) or locate the Tire and Loading Information label on the door jamb. The same information is echoed in the vehicle’s owner’s manual and often in the vehicle’s infotainment system under vehicle information. If you’re replacing tires, consider matching the speed rating and load index specified by Audi for your trim and checking the spare tire size if applicable.
Summary
The 2018 Audi Q5 offers multiple OEM tire sizes depending on wheel diameter and trim: 235/60R18 on 18-inch wheels, 255/45R19 on 19-inch wheels, and 255/40R20 on 20-inch wheels are among the most common configurations. Because sizes vary with packages and regional specs, the door jamb placard or the owner’s manual should be your definitive reference. Always verify before purchasing tires to ensure proper fitment and performance.