There is no difference in the suspension between a sport and non-sport E430.
Sport only changed the wheels and body trim.
I also looked into buying the E55 suspension, it was around $3,000.
Not sure about the cost now.

Best of luck.

I'm looking into new suspension set-ups for my W210. The E55 has different springs and sway bars than the stock W210. All I'm looking to do is probably add Bilstein HD shocks with a slightly lower spring.

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Ed
-1984 Mercedes 190D 2.2 5-speed gray market(bought@30,000 miles) (Sold back to original owner@170,000 miles)
-1999 Mercedes E300DT (245,000 miles)
-1999 Mercedes S500 Grand Edition (80,000 miles)

I am considering adding Bilstein HD's, too, but Bilstein's website states that they do not recommend using HD's with a lower spring. Instead, they suggest their Sport shocks.

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Paul S.

2001 E430, Bourdeaux Red, Oyster interior.
79,200 miles.

1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".

I know that this thread is a million years old, but I just HAD to say something because there is seemingly a lot of misinformation going on here...

I have a 1998 E430 SPORT, I believe that all Sport models came with the AMG styling/appearance package. I also believe that they came with the bigger 17" wheels. Also, my car in particular has a fairly firm/harsh ride. Very much stiffer than a non-sport model. It has Bilstein Sport Shocks. I have had other E430 sports, and they ALL rode the same.

I have driven other E430s and E420s (1997) and the ride was very soft, almost floaty in comparison. Same with E320 Base models.

I guess Mercedes used to take "sport" seriously. lol

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Current cars:
2000 ML55 AMG, 174k miles
2003 C240 T-Modell, 202k miles
1995 S320, 207k Miles