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      02-24-2009, 01:33 PM   #1
TBONE1969
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For people running RDsports

How much does the RDsport's additional drop over the H&R springs effect how much you scrape going over driveways, speed bumps, etc? I have been told that the RD springs drop the car low enough to be a nuisance and I should stick with H&R's. Thoughts?
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      02-24-2009, 02:07 PM   #2
m34jlp
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I'll give you my impressions based on RD Sporst only (I have no experience with the H&R on the M3).

The driveway to my house is very steep so I will list some cars that scrape on it and some that dont to give you an idea how low it is:

E90 M3 with 18's (RD Sport): No scraping
Viper GTS with stock wheels (not lowered): scrapes slightly
Porsche 993 with 18's (lowered on H&R): scraped slightly
Acura NSX on 17f/18r's (lowered on Intrax): scraped
Stock C6 Corvette: Scrapes the plastic flap

On speedbumps I have yet to scrape. If you have EDC I would put it on the stiffest setting when going over speedbumps or steep inclines. The main thing that causes to bottom out is when you dont take your time going over the bump and the spring compress too much...TAKE YOUR TIME GOING OVER A BUMP OR GOING INTO A STEEP DRIVEWAY.
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      02-25-2009, 09:52 AM   #3
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Thanks for the info. Sounds like as long as I am careful I won't have any problems
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      02-25-2009, 10:01 PM   #4
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RDs are ordered! Now I have to wait a painful 2-3 weeks for them to come in
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      02-26-2009, 12:46 PM   #5
m34jlp
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I agree waiting sucks!
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      02-26-2009, 02:15 PM   #6
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I had both. The only difference is that the RdSport's sit perfect all around. The H&R sit a little higher in the front than the rear from my experince. Maybe cuz I have a vert.
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