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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, Nov-04-2017, 07:38:24 PM   #201
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Default Re: BMW Performance Brakes on E46 M3

Originally Posted by L0ADED View Post
Excessive runout on the wheel hub sounds like it it is causing the knock back. When one starts getting into R compound tires and tracking the car more often, one should consider replacing the hub bearings at more frequent intervals or when they show excessive runout.

I spoke with one person (and his mechanic) who was competing in the GTS3 class and from what I remember when seeing his M3 on the lift, it looked like he had racing front hub assemblies where the bearings were easily serviceable or at least that is what his mechanic mentioned. When I look back at his build thread, he writes in his mod list that he recently serviced the hub bearings, but does not mention if he had a different hub assembly or if he just services the stock wheel bearings. He was running a Brembo GT kit. I believe my initial question had to do with the knock back issue.
That's what it sounds like. I looked for high performance front bearings but wasn't able to find anything. I decided to purchase two new front bearings from FCP Euro. If this happens to turn into a yearly maintenance item, I'll take advantage of FCP Euro's lifetime warranty policy.
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Discussing BMW Performance Brakes on E46 M3 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 (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)