05-06-2019, 10:35 AM | #45 | |
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I wouldn't mention anything about the caliper bleeder. A good shop should see this on inspection and take the appropriate measures to reduce the chances of the bleeder snapping. If does snap, it's not the end of the world as a good mechanic should have dealt with this numerous times before and has the extractors and tools available to fix the issue. The brake flush cost is reasonable as it's a somewhat labor intensive process. The alignment thing always bugs me. If the car tracks straight, the steering wheel is straight, and the wear is consistent across the tires, then an alignment shouldn't be necessary. It seems like one of these recommended things that higher end makes recommend on tire replacements. These are sports cars that tend to be driven harder and the OEM alignment and suspension design tends to be a little more aggressive than what you see on a typical passenger car, so it should be no surprise that the tires will wear a bit wonky as they get towards their end of life.
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05-06-2019, 02:50 PM | #46 |
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I bought all pads and cleaners and brake grease but I’m now thinking I should go ahead and replace the rotors, too.
Is it a std practice to replace rotors at 40k when changing pads? |
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05-06-2019, 03:31 PM | #47 |
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Depending on where you live, try either Stickly BMW in Bellevue or Car Tender in Seattle for good independent BMW service. If you are a BMWCCA member both shops and all the Seattle area dealers will give you a discount.
https://www.strictlybmw.com http://www.car-tender.com |
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05-06-2019, 04:51 PM | #48 |
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and 3x more expensive servicing by BMW's recommendations, at a Dealership. You can go very far, for much less, with a good and honest indy shop, even if their door rates are similar.
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05-06-2019, 07:17 PM | #49 |
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No, not unless the rotors are warped or scored. They should not have worn too thin in only 40k miles.
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05-06-2019, 07:46 PM | #50 | |
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05-06-2019, 08:53 PM | #51 | |
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I typically replace them when I do a brake job as a matter of good practice (or at least have them available if needed), despite being a tightwad. Look on Rock Auto...I bought rotors for years for my B5 S4 (the dreaded Audi) and Z3 there and that's where I will go for my M235. Rear rotors are on closeout for ~13 USD today... Cast iron is cheap. FWIW.
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05-06-2019, 09:03 PM | #52 | |
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A highly underrated aspect of a brake job is a thorough cleaning of components. I see you have the cleaners, I have not done a M235 yet (my brakes were done prior to my purchase by the Original Owner so I have some time and use my brakes sparingly with my long highway commute and rarely brake on the windy roads) but I would suggest having a paint scraper and a decent metal file handy as well to clean the surfaces as well. Taking a few extra minutes to remove the accumulated brake dust off of the bits makes the job much easier. Well done moving forward with this; it is highly satisfying (I work on cars to relax) if you have the time and patience. Good hunting!
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05-06-2019, 09:33 PM | #53 | |
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The Min Thickness is stamped on the rotor hub, but should be 1.6mm of total wear (0.8mm each side). On standard brake rotors you can put a new set of pads on if the rotor is any value above Min Thickness. |
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05-06-2019, 09:35 PM | #54 | |
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05-06-2019, 10:28 PM | #55 | ||
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If you buy enough stuff from Tirerack, they reward you with a complimentary tire pressure/tread depth tool (measures to nearest 1/32nd inch). Each channel might have a different depth by the way. I can vouch for the sales department since I bought my 09 from them. Can't vouch for service department though, since I immediately drove it 800 miles away, and eventually shipped it 2400 miles further. |
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05-07-2019, 06:23 PM | #56 |
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05-07-2019, 06:28 PM | #57 | |
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That said, I'm using these products for those purposes: Tire Pressure Gauge – http://www.longacreracing.com/produc...21&prodid=7339 Tread Depth Gauge – http://www.longacreracing.com/produc...88&prodid=7374
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05-07-2019, 08:44 PM | #58 |
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I bought EBC Red pads for under $300, all four corners. I can change all four corners in an hour to an hour and a half. It's literally 15-20 minutes each corner.
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05-07-2019, 09:13 PM | #59 | |
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As I researched this topic more, it appears that the std BMW brake job may include
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05-07-2019, 09:42 PM | #60 | |
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https://www.newtis.info/tisv2/a/en/f...rakes/J7O1UV0e https://www.newtis.info/tisv2/a/en/f...rakes/JWrOrgzU |
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05-08-2019, 08:32 PM | #62 | |
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I cannot tell how many rotor screws there are for each rotor. Does anyone know? I want to replace those as well. The picture has 6 holes on each rotor but the Turners MotorSport catalog is saying each rotor only needs 2 screws. What are the 4 holes for?
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05-08-2019, 10:58 PM | #64 | |
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Thanks.
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05-09-2019, 12:02 AM | #65 |
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05-27-2019, 12:56 PM | #66 |
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Thanks to all of your info and encouragement, I’ve replaced rear pads + sensor. Tested and they seem to be working fine.
Will tackle front pads and rotors this afternoon. Thanks again, you fine folks! |
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