Sizes of wheel bolts of Alfa Romeo 4C

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For the 4C model, the wheel is attached to the hub using wheel bolts. The number of fasteners depends on the 4C year of manufacture and is presented in the table below.

Total dimensions of fasteners:

Number of fasteners: 5;
Fastener size: M12x1.25;
Diameter of the mounting holes (PCD): 98;
Disc offset (ET): 58.10.

Important: the above data are limits for all vehicle modifications, specific figures depend on the year of manufacture.

Rules for selecting wheel fasteners:

Different wheel fasteners are often used for cast and stamped disks - this applies to the length of the bolts, since the thickness of different types of disks can vary significantly.

When selecting any fasteners, special attention should be paid to the thread pitch. This parameter is always indicated after the “x” in the marking.

Most of the wheel fasteners have metric threads with fine pitch (М12х1.25/М12х1.5/М14х1.25/М14х1.5), which must correspond to the threads of thread studs or threaded holes in the wheel hub.

Important: the marking of fastener bolt M12x1.5 is deciphered as follows: thread with a nominal diameter of 12 (mm), thread pitch 1.5 (mm).

Wheel fastener - full drawing

General parameters of wheel bolts of Alfa Romeo 4C

General view General view	N Number of fasteners per hub for Alfa Romeo 4C.	Size Metric size of fasteners: Thread M14 x 1.5 means: M14 - thread diameter 14 (mm); 1.5 - thread pitch (distance between adjacent threads).	PCD (mm) Disc drilling: 1. Number of bolt holes. 2. Diameter of the circle on which the mounting holes are located.
(General view)	5	M12x1.25	98

Size tables of wheel bolts of Alfa Romeo 4C

Years Year of manufacture or modification of the 4C	n Number of fasteners per hub for Alfa Romeo 4C.	Size Metric size of fasteners: ThreadM14 x 1.5 means: M14 - thread diameter 14 (mm); 1.5 - thread pitch (distance between adjacent threads).	PCD (mm) Disc drilling: 1. Number of bolt holes. 2. Diameter of the circle on which the mounting holes are located.	ET (mm) Disc offset: Distance between the vertical plane of symmetry of the wheel and the plane of contact of the disc to the hub.
2018	5	M12x1.25	98	58.10
2017	5	M12x1.25	98	58.10
2016	5	M12x1.25	98	58.10
2015	5	M12x1.25	98	58.10
2014	5	M12x1.25	98	58.10
2013	5	M12x1.25	98	58.10

Warning: the above data are official figures of the manufacturers, however, it should be borne in mind that the information is for reference and does not guarantee unambiguous accuracy.

Other parameters Alfa Romeo 4C:

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