Why Bother With Aftermarket Springs? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 02-03-2005, 10:00 AM
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92 325i- I am very new to bmws... i read a report where two springs were compared to stock springs on a timed road test. The cars with the after markets (i believe H&R and ebiach? im not sure) only fineshed about 1.8% faster than those on stock springs. Although ive searched this forum and the web, I am still not sure whether to just replace my struts (with konis or bilstein HD) , or to include some H&Rs with Bilstein sports. If i stuck with my stock springs, i would have to purchase one stock rear spring since one of mine is cracked (so i am told). There is a squeek and more bounce in the rear right which leads me to believe this diagnosis. But, i have not been able to locate stock springs online, and do not like the idea of sifting through local part warehouses.
I had tokicko illuminas and tockico lowering springs on my 97 maxima and loved the response, but i put the struts/springs in at the same time. So, I don't have any frame of reference to compare stock springs with aftermarket struts vs aftermarket springs with aftermarket struts. Though I've never tracked my car, i would like to as well as autocross. Most of my driving is very spirited city/highway driving, but i like to keep a smooth ride, and heard that H&R's offer a nice compromise. When considering H&R's, Is it not the 1.8% difference in track time that i should be looking for, but rather the enhanced feel and shorter turns of the steering wheel ? As a student, my funds are limited, and i would gladly use that 250 for a chip if i dont get the H&Rs. Lastly, I have to put up with Cleveland snow. Would the drop still be worth it? Your help is much appreciated.
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#2 (permalink) Old 02-03-2005, 10:27 AM
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Quote:
Originally posted by jsomogyi@Feb 3 2005, 09:00 AM
92 325i- I am very new to bmws... i read a report where two springs were compared to stock springs on a timed road test.* The cars with the after markets (i believe H&R and ebiach? im not sure) only fineshed about 1.8% faster than those on stock springs.* Although ive searched this forum and the web, I am still* not sure whether to just replace my struts (with konis or bilstein HD) , or to include some H&Rs with Bilstein sports.* If i stuck with my stock springs, i would have to purchase one stock rear spring since one of mine is cracked (so i am told).* There is a squeek and more bounce in the rear right which leads me to believe this diagnosis.* But, i have not been able to locate stock springs online, and do not like the idea of sifting through local part warehouses.
* * * * I had tokicko illuminas and tockico lowering springs on my 97 maxima and loved the response, but i put the struts/springs in at the same time.* So, I don't have any frame of reference to compare stock springs with aftermarket struts vs aftermarket springs with aftermarket struts.* Though I've never tracked my car, i would like to as well as autocross.* Most of my driving is very spirited city/highway driving, but i like to keep a smooth ride, and heard that H&R's offer a nice compromise.* When considering H&R's,* Is it not the 1.8% difference in track time that i should be looking for, but rather the enhanced feel and shorter turns of the steering wheel ? As a student, my funds are limited, and i would gladly use that 250 for a chip if i dont get the H&Rs. Lastly, I have to put up with Cleveland snow.* Would the drop still be worth it? Your help is much appreciated.
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Suspension upgrades will make the biggest improvement to any BMW. BMW's were designed for great handling. You won't notice much of a difference with a performance chip, not enough to justify the cost. You will be very happy with the H&R sport and Bilstein Sport damper upgrades. I don't know what 1.8% difference means exactly. However, if you can shave off more than 2 seconds off of an auto-x or track lap time, that's already a lot! H&R's are quite a bit stiffer than the Eibachs. However, if you look around there were some other threads going around and I recommended people not buy Eibach's even though they have stock like spring rates and are quite soft. The ride will be a little more uncomfortable. Especially if the roads where you are located are uneven and bumpy. Highway driving should be very comfortable. The ride will be much firmer with less body roll. The stock E36 suspension is VERY bouncey, so right away you should notice how much firmer the ride is. Highway high speed statability is also improved significantly. The car will feel a lot more safe and stable at higher speeds. If you corner hard and have decent tires, granted you have proper alignment done, you should also notice a much much higher conering speed. This is what I was most impressed with when I installed my H&R springs and Bilstein dampers.

You should also upgrade your rear shock mounts to urethane ones while you're at it. It's a very common failure on BMW's with or without upgraded suspension.

Oh yeah, please avoid Tokico suspension parts at all costs. Their so called "performance" suspension is not so much performance oriented. I sold them for less than a year a while ago. I had so many complaints from customers, friends, track buddy's that I decided not to sell them anymore. They are what we in the industry call "ricer shocks".

Good luck!

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#3 (permalink) Old 02-03-2005, 08:11 PM
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My first BMW was a '95 325is completely stock. I really enjoyed the ride. I was really impressed at the responce and the ride on the highway. She parted from me after a guy ran a red and is now being rebuilt. Now I have a '96 328is and was lucky enought to find it with already installed Dinan stage 1 suspension.
http://www.dinancars.com/Series.asp?Series...is%20Tuning#907
Hopefully that link will work. The car also has 17in rims with Michelin Pilot S 235/40ZR17 tires. Yes, the ride is much stiffer and tighter. With the low profile tires and stiffer suspenison you feel every crack in asphalt and dip in the rode. But the handling is through the roof. I could never get enough body roll to break the front tires free. I've taken clover leaves onto highways at 60mph when is posted 30mph. Since I live in snow country of Minneapolisl, Minnesota I got snow tires and rims with the car. they are 16's with Michelin Pilot Alpin PA2 205/55HR16. They give me great traction and handling while still giving me the performance when the rode are cleared. I havn't got into any trouble with snow this year even though my car is lowered yet. I don't really go out in the snow unless its to play in some parking lots or down a river road todo some drifting with no traffic. I have also noticed with the winter tires that the freewayhas smoothed out alot. I guess the tire is adding to the suspension since there is more sidewall unlike the 40 series tires. All in all I think my setup is pretty trick and I can't even amagine what a Stage 2 or Stage 3 Dinan suspension would be like. How much better can it get.

O God now I must go out for a cruise and wet myself

Chris

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