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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Sat, Dec-16-2017, 08:17:43 PM   #1
GO4BROKE
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Default Bilstein B12 Pro-Kit

I am consider replacing my original shocks & struts for the B12 Pro Kit. This will be my daily driver and it is nearing 115,000 miles. Is it necessary to also replace the front strut mounts and strut bearings? Not trying to cheap out but would like to save $300 if it's not all that important to switch out. Currently experiencing no symptoms to suggest they are going bad.

Last edited by GO4BROKE; Sat, Dec-16-2017 at 10:45:20 PM.
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Old Sat, Dec-16-2017, 11:33:48 PM   #2
Danwilz
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Default Re: Bilstein B12 Pro-Kit

Hey I have the B12 kit it’s been on for about a year and a half. If there’s no noise and no play you don’t need to do the bearings at the moment. Only advice I can give you if your daily driving the car is to either modify the bump stops on the front strut pistons, I think Obioban has a DIY or link to it. Also you can do camber plates to restore your front travel otherwise if your not riding on glassy smooth roads you’ll constantly bottom out the front shocks, ask me how I know! Just saying there’s better ways to go the B12 kit might look good for the price, but will end up costing more money in the long run to have it function the way it should!

Last edited by Danwilz; Sat, Dec-16-2017 at 11:39:08 PM.
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Old Sun, Dec-17-2017, 12:01:03 AM   #3
GO4BROKE
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Default Re: Bilstein B12 Pro-Kit

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Originally Posted by Danwilz View Post
Hey I have the B12 kit itís been on for about a year and a half. If thereís no noise and no play you donít need to do the bearings at the moment. Only advice I can give you if your daily driving the car is to either modify the bump stops on the front strut pistons, I think Obioban has a DIY or link to it. Also you can do camber plates to restore your front travel otherwise if your not riding on glassy smooth roads youíll constantly bottom out the front shocks, ask me how I know! Just saying thereís better ways to go the B12 kit might look good for the price, but will end up costing more money in the long run to have it function the way it should!
Interesting perspective, I have heard good things about the kit. If you could do it over which strut/spring kit would you go with? I am not really interested in the dynamics of a coilover setup. Would Konis/Eibach springs be a better alternative?

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Old Sun, Dec-17-2017, 01:11:10 AM   #4
Danwilz
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Default Re: Bilstein B12 Pro-Kit

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Originally Posted by GO4BROKE View Post
Interesting perspective, I have heard good things about the kit. If you could do it over which strut/spring kit would you go with? I am not really interested in the dynamics of a coilover setup. Would Konis/Eibach springs be a better alternative?

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from my experience yes the konis Eibach combo is a better choice, and you can choose your spring rates. The spring rates on the B12 kit are slightly firmer than OEM. Hope this helps maybe some other members will chime in good luck.
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Old Sun, Dec-17-2017, 04:12:01 AM   #5
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Default Re: Bilstein B12 Pro-Kit

Had B12 kit without modifying the bump stops nor camber plates without issue of bottoming out. Loved them for daily driving.


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Discussing Bilstein B12 Pro-Kit in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)