I have found a 300E (24V) that Im driving around for a couple of days now - and planning to buy if the owner agrees - it was standing for about a year due to some bad wiring bits (OVP, NSS) and worn out key, the car is OK for its age - no concours etc. (far more powerful than my diesel of course), body cladding, black leather etc - could use a weeks worth of detailing team elbow grease.

The car drives a bit funny - the alignment is terrible (tires are 5 years old - front nearly chewed flat from the outer edges) - I tried to quick fix align it so atleast it does not want to yank to the left.

While driving it on the dry - it felt like it needed a new set of struts and shocks, but when I drive on wet roads the car becomes smooth as a new car, perfect body control on the same roads it was hopping and hammering on.

How can water cause this? dry bushings?

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

Bushings and other dried out rubber would be my guess. I would a complete suspension check on all 4 corners. Ball joints, tie rod ends, sway bar bushings/brackets, and all the control arms and stuff in the rear end. Its what keeps you on the road!

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Streetside: 1987 Mercedes 300E Petrol Blue/Green
2014 Ford Mustang Grabber Blue
1999 Ford Ranger Green

Dockside: 1968 Eltro 17
1985 Silverton 34C

I have had 124 cars with bushings that were squeeky in the dry but quiet in the wet. Can't say I could detect any difference in the ride quality between wet & dry though, only noise.

I think you are perhaps on the right path. Perhaps try hitting up the bushings with some spray lube to see if it temporarily fixes the problem?

use armorall on the rubber,not wd 40

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

I applied some RC silicon oil, its only a bit better (placebo I think), I reckon its a combined wear of the ball joint and extremely off alignment.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)

The pull can be just the way the bad alignment has worn the tires so don't align it based on the pull.

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2016 Monsoon Gray Audi Allroad - 21k
2008 Black Mercedes E350 4Matic Sport - 131k
2014 Jeep Wranger Unlimited Sahara - 62k
2003 Gray Mercedes ML350 - 122k