4x100 is the classic small-car four-lug pattern. You will find it on Honda Civic, Toyota Yaris and older compact cars. We stock 493 wheels drilled 4x100.
Measuring is simple: count the studs, then measure the diameter of the circle they sit on. Five studs are measured from the far edge of one hole to the center of the one two holes away; six or eight studs across opposite centers. Ordering the wrong pattern is the most common fitment mistake — if your measurement falls between two patterns, confirm with the vehicle's spec sheet first.