for sale are 4 500e wheels that I purchased from ebay, been told that they wouldnt fit my 300e, so I'm selling them for 380plus shipping,

Yeah, they wont fit your 300E, they push out too far. Thats why the 500Es have such big fenders.

What are all the dimentions 16x8 ET##?

I think they might fit w123s and w126s, but if you give me that ET number I could tell you.

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Current Stable:
1994 S500 v140, 210k miles, white with grey.

Former Mercedes in the Stable:
1983 300CD Turbo diesel 515k mi sold (rumor has it, that it has 750k miles on it now)
1984 300CD Turbo Diesel 150 k mi sold
1982 300D Turbo Diesel 225 sold
1987 300D Turbo Diesel 255k mi sold
1988 300 CE AMG Hammer 15k mi sold
1986 "300E" Amg Hammer 88k mi sold (it was really a 200, not even an E (124.020)
1992 500E 156k mi sold
etc.