BMW Style 24 wheels were first introduced in 1994 as an optional wheel for the E36 M3 at a dealer price tag of $1,850.  These wheels came standard on the limited production E36 M3 LTW and E36 M3 GT in 1995 which are the model M3s which made these wheels gain some real recognition.  

Style 24's came only in 17-inch diameter with 7.5 inch wide fronts and 8.5 inch wide rears.  The offset is ET+41 and each front wheel weighs 8.94 kg (19.71 lbs) with the rears weighing 9.48 kg (20.90 lbs) each.  Although an inch difference in width, both the front and rear wheels use the same tire dimensions of 234/40-17. Each wheel produced was individually inspected using X-ray and precision balanced after forging and machining, as a result some wheels show evidence of grinding on the inside get true balance.

The preface E36 M3 (3.0L S50 engine 1994 - 1995) had a slightly different version of wheel than the facelifted E36 M3 (3.2L S52 engine 1996 - 1999).  These wheels are still a popular OEM wheel option for the E36 M3 and as a result, the design is replicated by many companies trying to profit off the look.  

It is worth knowing what to look for in differences if you are in the market for a set.  Let's get into the details of what makes the wheel original from a replica.

Style 24 Dealer Details

The 1994 - 1995 wheel has the "BMW MOTORSPORT" stamp on the outside of the wheel.
The 1995 - 1999 wheel has the "M" badge decal below the center cap.
Only offered with a painted silver finish or polished.
Has BMW stamped on the inside of the spoke.

Manufacturer Stamp Codes

A 3 digit stamp exists on the outside of the wheel next to the valve stem, the 3 digits decode to:
350 : original painted front rim through 1995 stamped "BMW MOTORSPORT"
360 : original painted rear rim through 1995 stamped "BMW MOTORSPORT"

759 : original polished front rim M3 GT only
760 : original polished rear rim M3 GT only

850 : polished front rim with "M badge decal" below center cap
860 : polished rear rim "M badge decal" below center cap

851 : later polished 7.5" rim but I have no info on when or where these were used

BMW Wheel Style 24 Replica Warning Signs

Any replica wheel will obviously not have the official BMW stamp on the back.  The wheels will often be stamped with Italy as the country of origin. In addition, the majority of the replica wheels will only have the "MOTORSPORT" stamped on the front, it will NOT have the full "BMW MOTORSPORT".  If the wheels are replicating the facelifted version many will omit the recessed area for the "M" badged sticker below the center cap.  See below pictures for examples of authentic LTW / GT Style 24 wheel markings.