01-31-2024, 05:50 PM | #67 |
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Drives: 06 e91 325ix
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Personally I liked the dustier of the two msport pads on the street. Good pedal feel amd initial bite an d quietness. Others don’t like the wheel cleaning every week or so amd so make other choices.
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‘06 e91 manual 325ix BarriqueRot
over Terra (one of 1), Nav, Sport, L7 A few OEM+ mods: MTech front bumper, MSport wheel & handbrake, 4AD trim, full rear shades, more to come… |
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02-18-2024, 11:42 AM | #68 | |
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Another alternative is the 'floating' rotor, in which the disk is (sometimes) bolted to the hat. In the case of 'bolted' models, one can replace the disk on a regular basis, reusing the hat. BMW does make a floating rotor but I've never seen the use of bolts. Floating rotors look really cool but it's their $1000+ a pair price makes even most enthusiasts pass on the option, at least for the F30. If one has an M3, well, you've already got poor impulse control when it comes to fast cars and money so what's another grand?
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02-18-2024, 12:30 PM | #69 | |
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When new, a full pad will consume almost all the space between the piston and the rotor. But as the pad is used, a gap will start to form between the piston and the backing plate because the pad, held in place by the pad pins, but not attached to the piston (unlike single caliper brake pads), will only retreat a small amount compared to the piston. On next application of the brake, the piston will 'clack' against the baking plate. Buying new pads when the sounds starts to bug you is one way to fix the problem. Alternatively, buy shims for your Brembo caliper made of stainless steel or titanium but given that for anyone to make a living do that, they'd need to charge a $100 for a set of 4, so you're getting close to buying a new set of pads.
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02-18-2024, 12:51 PM | #70 | |
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1) Lubrication. Would there be additional heat build up on the pad if it cannot slide away from the rotor when the brake is released. Would it prematurely wear the pad? Would it heat the pad (or prevent it from cooling) thus transferring more heat to the caliper? Could the caliper suffer greater wear? Finally, would the rotor wear quicker? 2) Corrosion resistance. Since 2 and 4 piston calipers on BMWs are made of aluminium, I can't see the pad fusing to the caliper, unlike the case of 1 piston calipers, where pads 'ears' fuse to the pad carrier due to rust. In general, pad material life tends to be shorter than backing plate life, but would an increase in corrosive action due to a lack of grease make a difference? These might be elements you want to check on. BMW does instruct repair techs to use grease. I would not go against this advice but I wonder how little one could get away with? I certainly use a lot less now than in the past with no ill-effect.
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02-18-2024, 08:05 PM | #71 | |
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