Saturn Aura Tire Sizes and Rim Dimensions by Model Year and Trim
The Saturn Aura features varying tire sizes and rim dimensions depending on the model year and trim level. Understanding these differences is essential for proper tire replacement and upgrades.\n\nEarly model years of the Saturn Aura often come with 16-inch rims on base trims, progressing to 17- or 18-inch wheels on higher trims like XR and Red Line. Rim widths typically range from 6.5 to 7.5 inches, affecting tire width compatibility.\n\nTire size markings on the sidewall indicate key details such as width, aspect ratio, and diameter, matching the manufacturer specifications per trim. When comparing trims, note that sportier versions generally use wider tires and larger rims for improved handling.\n\nUsing accurate tire and rim data ensures optimal vehicle performance, safety, and aesthetics when selecting replacements or aftermarket upgrades for your Saturn Aura.
| Make / model / trim | Year | Tire size | Wheel |
|---|---|---|---|
| Saturn Aura 3.5 V6 | 2007 | 225/50R18 | 7.5" × 18" |
For bolt pattern (PCD), offset ET, center bore, and mounting details, open the bolt pattern page for Saturn Aura.
FAQ
- What tire sizes are common for the Saturn Aura base model?
- The base model usually comes with 205/60R16 tires on 16×6.5 inch rims.
- How do rim sizes differ between Saturn Aura trims?
- Lower trims often have 16-inch rims while higher trims like XR or Red Line feature 17- or 18-inch rims with wider widths.
- Why is it important to match tire size to rim width?
- Proper matching ensures tire fitment, optimal handling, and avoids premature tire wear or damage.
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 |
