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In 2014, the Cadillac CTS has a wheel bolt pattern of 5 X 120 millimeters, meaning it uses 5 lug nuts to fasten its wheels onto hubs with a diameter of 120 mm. The "MM" refers to millimeters, typically used for measuring wheel bolts and nuts. The "hex" denotes the top diameter of the lug nut, which is crucial for rim replacement, but the shaft diameter is more critical for proper fit. The thread size, indicated as M14 X 1.5, corresponds to the shaft size and the spacing between its grooves or "threads," with a hex size of 22 mm.
As an American, I'd say: I have a 2014 Cadillac CTS4, and I'm considering buying 215/40ZR18 rims and tires from someone. I want to know if my current tires size 245/40RF18 will fit on these rims and if the bolt patterns match up.
The 2014 Cadillac CTS features a wheel bolt pattern of 5 bolts with a spacing of 120 millimeters.