Alfa Romeo GT Wheel Lug Pattern, Offset ET & Center Bore Reference
The Alfa Romeo GT features a range of wheel lug patterns defined by lug count and pitch circle diameter (PCD), crucial for ensuring correct wheel mounting. Proper fitment depends on matching the lug pattern, offset ET, and center bore specifications.\n\nOffset ET for Alfa Romeo GT wheels typically falls within the range designed to maintain proper suspension geometry and handling balance. The center bore size ensures the wheel fits snugly on the hub, preventing vibration.\n\nRim sizes compatible with the Alfa Romeo GT vary by year and trim, covering dimensions suitable for both performance and comfort. Referencing the year-sorted wheel lug pattern catalog helps identify precise wheel fitment across the model’s production span.\n\nThis reference guide supports enthusiasts and professionals in selecting the right wheels, avoiding fitment issues by aligning lug count × PCD, offset ET, and center bore parameters specific to Alfa Romeo GT models.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Alfa Romeo GT 1.8 TS | 2010 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2010 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2010 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2010 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2009 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2009 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2009 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2009 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2008 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2008 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2008 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2008 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2007 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2007 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2007 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2007 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2006 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2006 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2006 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2006 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2005 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2005 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2005 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2005 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2004 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2004 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2004 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2004 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.8 TS | 2003 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 1.9 JTD | 2003 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 2.0 JTS | 2003 | 195/65R15 | 6.5 | 15 | 5×98 | 35 | 58.1 | M12*1,25 |
| Alfa Romeo GT 3.2 GTA | 2003 | 225/45R17 | 7 | 17 | 5×98 | 35 | 58.1 | M12*1,25 |
FAQ
- What is the typical lug pattern for Alfa Romeo GT wheels?
- The Alfa Romeo GT commonly uses a lug pattern with 5 lugs and a pitch circle diameter (PCD) of 98 mm.
- Why is wheel offset ET important for Alfa Romeo GT fitment?
- Offset ET ensures the wheel mounts correctly without causing suspension or clearance issues, maintaining proper handling.
- Can I use wheels with a different center bore on an Alfa Romeo GT?
- Using wheels with the incorrect center bore can cause vibration; adapters or correctly sized wheels are recommended for proper fit.
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 |
