Alfa Romeo 156 Wheel Lug Pattern, Offset, and Rim Size Reference
The Alfa Romeo 156 features a specific wheel lug pattern crucial for selecting compatible wheels. Its lug pattern is defined by the lug count and the PCD (pitch circle diameter) measured in millimeters. Understanding these measurements helps ensure proper wheel fitment.\n\nOffset (ET) values for the Alfa Romeo 156 vary depending on the model year and trim, affecting the wheel positioning relative to the suspension and fenders. Center bore size is equally important to ensure proper centering of the wheel on the hub.\n\nRim sizes compatible with the Alfa Romeo 156 range across different widths and diameters to match various performance or aesthetic requirements. This year-sorted reference allows for accurate selection of wheels that maintain proper safety and handling characteristics.\n\nConsult the detailed year-by-year catalogue on this site to check specific Alfa Romeo 156 wheel fitment parameters including lug pattern, offset, and center bore measurements before purchasing replacements or upgrades.
| Make / model / trim | Year | Tire | Rim width (in) | Rim diam. (in) | Bolt pattern | Offset ET | Bore DIA | Mounting |
|---|---|---|---|---|---|---|---|---|
| Alfa Romeo 156 1.6 16V T.SPARK | 2005 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2005 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2005 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD 16V | 2005 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 JTS | 2005 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 Twin Spark | 2005 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2005 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2005 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 3.2 GTA | 2005 | 215/45R17 | 8 | 17 | 5×98 | 31 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 2004 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2004 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2004 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD 16V | 2004 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 JTS | 2004 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 Twin Spark | 2004 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2004 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2004 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 3.2 GTA | 2004 | 215/45R17 | 8 | 17 | 5×98 | 31 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 2003 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2003 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2003 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD 16V | 2003 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 JTS | 2003 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 Twin Spark | 2003 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2003 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2003 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 3.2 GTA | 2003 | 215/45R17 | 8 | 17 | 5×98 | 31 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 2002 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2002 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD 16V | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 JTS | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 Twin Spark | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2002 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 3.2 GTA | 2002 | 215/45R17 | 8 | 17 | 5×98 | 31 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 2001 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2001 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2001 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 2001 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2001 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2001 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 2000 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 2000 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 2000 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 2000 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 2000 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 2000 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 1999 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 1999 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 1999 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 1999 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 1999 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 1999 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 1998 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 1998 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 1998 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 1998 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 1998 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 1998 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.6 16V T.SPARK | 1997 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.8 16V T.SPARK | 1997 | 205/50R16 | 6 | 16 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 1.9 JTD | 1997 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.0 16V T.SPARK | 1997 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.4 JTD | 1997 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
| Alfa Romeo 156 2.5 V6 24V | 1997 | 185/65R15 | 6 | 15 | 5×98 | 38 | 58.1 | M12*1,25 |
FAQ
- What is the Alfa Romeo 156 wheel lug pattern specification?
- The Alfa Romeo 156 has a wheel lug pattern defined by the number of lug nuts and a PCD specific to its production years, crucial for wheel compatibility.
- Why is offset (ET) important for Alfa Romeo 156 wheels?
- Offset determines the positioning of the wheel relative to the hub and suspension, affecting handling and fitment—using the correct ET preserves vehicle performance.
- Can I use wheels with different center bore sizes on an Alfa Romeo 156?
- Wheels must match the Alfa Romeo 156 center bore size or use proper hub-centric rings for safe installation and alignment.
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 |
