Originally Posted by sixto

There should be an ETxx code near the embossed wheel size. ET is negative offset in mm.

Rectangular holes are a hint it’s a 124/201 wheel. 124/201 wheels have an offset of 48- or 49mm. Sometimes too deep for the rear of a 126. Just to add confusion, early 124 wheels have oval holes.

126 wheels come in 6.5” with 21.5mm offset and 7” with 25mm offset. Either size fits any 126.

Sixto
98 E320s sedan and wagon
02 C320 wagon