Alfa Romeo Wheel Lug Pattern Catalog | PCD & Offset Reference

Alfa Romeo wheel lug pattern data is essential for owners looking to replace or upgrade their wheels and tires. This catalog provides detailed specifications for each Alfa Romeo model, including lug count and pitch circle diameter (PCD), offset (ET), and center bore diameter.\n\nEach Alfa Romeo vehicle model listed links to year-sorted pages containing precise wheel and tire fitment references. This ensures that fitting aftermarket or replacement wheels maintains proper alignment, safety, and performance.\n\nThe Alfa Romeo bolt patterns covered here strictly refer to wheel mounting specifications, not vehicle lines. Understanding these technical details helps Alfa Romeo owners avoid compatibility issues and select wheels and tires optimized for their car's design.\n\nCheck individual model pages for exact tire markings and other wheel data aligned with your vehicle’s year and trim to find the best match for your Alfa Romeo’s wheels and tires.

19 models

Tire size calculatorShow

Compare two tire sizes — diameter, speedometer error, and clearance change.

inchmm
Size 1Size 2DiffDiff(%)
Diameter25.0"25.4"0.5"1.89%
Width7.7"8.5"0.8"10.26%
Circumference78.4"79.9"1.5"1.86%
Profile height5.0"4.2"-0.7"-15.08%
Turnover per mile80779314-1.73%
Clearance--+0.2"-
25.0"
7.7"
old tire side
25.5"
8.5"
new tire side
old tire
15"
old rim
5.0"
new tire
17"
new rim
4.2"

Speedometer Error

(First wheel OEM size)

Reading20 mph30 mph40 mph50 mph60 mph70 mph80 mph90 mph
Actual20.430.540.750.961.171.281.491.6