Well, I checked the tires to make sure they were installed properly, and they are. Also, they are the same tires that I had previously installed (Falken's - not a great tire, but decent enough). On the highway, smooth rode the car just glides along - runs great. It's only when I hit the bumps - and I'm not talking pothole bumps...

So, I checked the air pressure and they all had around 38 psi (Max pressure stamped on the tire is 51 psi). My gas flap says Max front at 28 psi, rear at 33 psi...so I removed some air - fronts are down to 30 psi and rear's are right at 32 psi. Car does run better, I need to take it out on the highway, but the bouncing has definitely been reduced. Still there some and it really 'feels' like shocks to me...

My question - can 6-8 psi make this much difference? Do you guys generally ignore Mercedes recommended psi's after the original tires are gone? Big difference between 51 Max psi on these tires and 27-33 psi on the gas tank door...

ryan

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RG Newell

1984 300D
1972 250
1986 560SL
1991 300CE