The first time i removed my wheel, i had no help either. So...i cut a 2x4 the a good length to stand under the upper left spoke on the wheel and slipped towel over the top to act as a "dead-man". Gripped the wheel in my right hand and set the breaker at about the 10 o'clock position so i could get the maximum downward leverage with my left hand. Hope this helps.

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Earl McLain
'02 C230 Kompressor
'89 560 SEL "Frau BlueCar" (retired April 2004)