They will probably settle after a bit of driving.

HD's will be a stiffer shock. I would be asking what will happen with hd's int he front and comfort in the rear? Will that adversely affect ride / car handling?

Alon

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'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon - Sold
2006 E350 Wagon - 368 - Dead
2015 GL350 Bluetec - 197U