Audi A6 Allroad (4BH, C5) Tire Sizes & Rim Dimensions by Year and Trim
The Audi A6 Allroad (4BH, C5) features various tire size markings depending on the model year and trim level. Common tire dimensions include 235/55 R17 and 255/45 R18, corresponding to standard and upgraded trims respectively.\n\nRim width and diameter also vary by trim, with popular configurations such as 7.5×17 inches and 8×18 inches. Understanding these size differences helps when selecting replacements or upgrades for your Audi A6 Allroad (4BH, C5).\n\nTo compare trims effectively, refer to the original equipment manufacturer (OEM) specifications which indicate approved tire sizes and rim widths. This ensures compatibility with suspension and brake components while maintaining ride quality and safety.\n\nAlways verify tire markings stamped on the sidewall and consult owner resources or dealer information specific to your model year. Proper tire and rim matching improves vehicle performance and preserves Audi’s engineering standards.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2005 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2005 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 4.2 V8 quattro | 2005 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2004 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2004 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 4.2 V8 quattro | 2004 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2003 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2003 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 4.2 V8 quattro | 2003 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2002 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2002 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 4.2 V8 quattro | 2002 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2001 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2001 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.5 TDI quattro | 2000 | 215/65R16 | 6.5" × 16" |
| Audi A6 Allroad (4BH, C5) 2.7 T quattro | 2000 | 215/65R16 | 6.5" × 16" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Audi A6 Allroad (4BH, C5).
FAQ
- What tire sizes fit the Audi A6 Allroad (4BH, C5)?
- Standard tire sizes include 235/55 R17 and 255/45 R18, varying by model year and trim.
- How do rim widths vary across Audi A6 Allroad trims?
- Common rim widths range from 7.5 to 8 inches, paired with 17- or 18-inch diameters depending on trim.
- Can I fit tires from a different trim on my A6 Allroad (4BH, C5)?
- Yes, if the tire size and rim width match OEM specifications and are compatible with your vehicle’s suspension and brakes.
Tire size calculatorShow
Compare two tire sizes — diameter, speedometer error, and clearance change.
| Size 1 | Size 2 | Diff | Diff(%) | |
|---|---|---|---|---|
| Diameter | 25.0" | 25.4" | 0.5" | 1.89% |
| Width | 7.7" | 8.5" | 0.8" | 10.26% |
| Circumference | 78.4" | 79.9" | 1.5" | 1.86% |
| Profile height | 5.0" | 4.2" | -0.7" | -15.08% |
| Turnover per mile | 807 | 793 | 14 | -1.73% |
| Clearance | - | - | +0.2" | - |






Speedometer Error
(First wheel OEM size)
| Reading | 20 mph | 30 mph | 40 mph | 50 mph | 60 mph | 70 mph | 80 mph | 90 mph |
|---|---|---|---|---|---|---|---|---|
| Actual | 20.4 | 30.5 | 40.7 | 50.9 | 61.1 | 71.2 | 81.4 | 91.6 |
