The standard K11 hubs come with 4 studs with a Pitch Circle Diameter (PCD) of 100mm. Often this is referred to as 4×100 (Number Of Studs x PCD). This is a very common stud pattern for smaller FF cars and a select amount of FR cars, notably the NA and NB Mazda MX5.

Wheel Offset Illustration

The offset of a wheel indicates how far a wheel will sit inside or outside the wheel guards in relation to the distance between the face of the hub and the edges of the rim.

Offset has a significant effect on many elements of a vehicle's suspension, including suspension geometry, clearance between the tire and suspension elements, the scrub radius of the steering system, and visually, the width of the wheel faces relative to the car's bodywork.

Zero Offset - The plane of the hub mounting surface is even with the centerline of the wheel.

Positive Offset - The plane of the hub mounting surface is shifted from the centerline toward the front or outside of the wheel. Positive offset wheels are generally found on front wheel drive cars and newer rear wheel drive cars.

Negative Offset - The plane of the hub mounting surface is toward the back or brake side of the wheel's centerline.

Wheel offset calculators such as this can give an idea of the clearances that can exist in relation to suspension struts and the wheel guard.