GMC Wheel Lug Pattern Catalog & Bolt Patterns | PCD Offset Guide

This GMC wheel lug pattern catalog provides detailed information on the bolt patterns, offset (ET), and center bore diameters for multiple GMC vehicle models. Wheel lug patterns are expressed in terms of lug count and pitch circle diameter (PCD) in millimeters, essential for determining wheel fitment compatibility.\n\nEach GMC model listed includes links to pages with year-sorted wheel fitment references, making it easy to find exact wheel mounting specs for your specific vehicle. Offset (ET) values indicate the positioning of the wheel relative to the hub, impacting wheel clearance and handling.\n\nAccurate GMC bolt patterns and wheel data ensure proper mounting and performance when selecting aftermarket wheels or replacement tires. Use this reference to compare wheel fitment options and avoid fitment errors by confirming lug pattern, offset, and center bore diameter matching your GMC.

7 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