XBimmers | BMW X3 Forum - View Single Post - Ditching the cross drilled rotors & going solid

Kevin_The_Clean1 · 12-02-2023, 08:03 PM

Hi fellas. I hope that one of you F97 X3 M gurus can help me out here. I've always hated the way the cross-drilled rotors rust the moment you look at them. Now that I have the 6-piston X5 M calipers on my X3 MC, I'm going to ditch the cross-drilled rotors & go for the tradition vented blanks. They not only have much more meat for the bigger pads to grip onto... they're also coated from the factory & will not rust. In other words, they will look much better in the long run & last much longer too. They also won't chew up my pads & dust as much.

The FRONT ROTORS measure 395x36mm & are EASY TO SOURCE from a 2020 G05 X5 40i X-Drive.

These two nice SUV's share the very same front calipers. So finding these FRONT ROTORS were a piece of cake one you select the right diameter & width rotors. The rear rotors however, are a much different story.

Part # 34-11-6-887-397
Part # 34-10-6-887-398

https://www.realoem.com/bmw/enUS/sho...diagId=34_2790

https://www.realoem.com/bmw/enUS/sho...diagId=34_2632

The REAR ROTORS measure 370x24mm & are NOT EASY TO SOURCE. I pulled up the (rear brake diagram) from this same 2020 G05 X5 40i X-Drive & got a part number 34-21-6-860-927.

And these were non side specific. So they would be need to be ordered in a pair, in other words x2. But BMW parts guy says this isn't a great part & none are currently available in the country. BMW parts guys also they're currently experiencing rotor issues. So WTF guys & gals. I also walked around the lot & found a few current gen X5's. So pulled their VIN #'s & my parts guy came up with 2 different "potential" rear brake rotor part numbers. That measured 370x24mm. But he could not be sure this would fit or work. So his confidence level was really low on this.

https://www.realoem.com/bmw/enUS/sho...diagId=34_2791

https://www.realoem.com/bmw/enUS/sho...diagId=34_2660

He pulled up two different part numbers from those vins...

Part # 34-20-6-896-673
Part # 34-20-6-896-674

Part # 34-20-6-898-493
Part # 34-20-6-898-494

^^^ The first series of numbers looks like he could probably get them. The second series of numbers say they're backordered. But the applications for the REAR ROTORS ending in 673 & 674 don't show they fit an X5. So WTF should I do... ??

12-02-2023, 08:03 PM	#1
Kevin_The_Clean1 Brigadier General 3384 Rep 4,008 Posts Drives: 2020 X3 MC Join Date: Jan 2016 Location: Campbell, CA iTrader: (11)	Ditching the cross drilled rotors & going solid - X3 M PRO's PLEASE HELP... Hi fellas. I hope that one of you F97 X3 M gurus can help me out here. I've always hated the way the cross-drilled rotors rust the moment you look at them. Now that I have the 6-piston X5 M calipers on my X3 MC, I'm going to ditch the cross-drilled rotors & go for the tradition vented blanks. They not only have much more meat for the bigger pads to grip onto... they're also coated from the factory & will not rust. In other words, they will look much better in the long run & last much longer too. They also won't chew up my pads & dust as much. The FRONT ROTORS measure 395x36mm & are EASY TO SOURCE from a 2020 G05 X5 40i X-Drive. These two nice SUV's share the very same front calipers. So finding these FRONT ROTORS were a piece of cake one you select the right diameter & width rotors. The rear rotors however, are a much different story. Part # 34-11-6-887-397 Part # 34-10-6-887-398 https://www.realoem.com/bmw/enUS/sho...diagId=34_2790 https://www.realoem.com/bmw/enUS/sho...diagId=34_2632 The REAR ROTORS measure 370x24mm & are NOT EASY TO SOURCE. I pulled up the (rear brake diagram) from this same 2020 G05 X5 40i X-Drive & got a part number 34-21-6-860-927. And these were non side specific. So they would be need to be ordered in a pair, in other words x2. But BMW parts guy says this isn't a great part & none are currently available in the country. BMW parts guys also they're currently experiencing rotor issues. So WTF guys & gals. I also walked around the lot & found a few current gen X5's. So pulled their VIN #'s & my parts guy came up with 2 different "potential" rear brake rotor part numbers. That measured 370x24mm. But he could not be sure this would fit or work. So his confidence level was really low on this. https://www.realoem.com/bmw/enUS/sho...diagId=34_2791 https://www.realoem.com/bmw/enUS/sho...diagId=34_2660 He pulled up two different part numbers from those vins... Part # 34-20-6-896-673 Part # 34-20-6-896-674 Part # 34-20-6-898-493 Part # 34-20-6-898-494 ^^^ The first series of numbers looks like he could probably get them. The second series of numbers say they're backordered. But the applications for the REAR ROTORS ending in 673 & 674 don't show they fit an X5. So WTF should I do... ?? __________________ 1998 E36 M3 - Totaled 2003 E39 M5 - Gone but not forgotten 2011 E90 335i M-Sport - Daily Driver 2017 F87 M2 - Sold & missed 2020 F97 X3 M Competition - Finally arrived /// Last edited by Kevin_The_Clean1; 12-02-2023 at 10:21 PM..
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