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A few people expressed concern about brake bias as a result of twiddling with the front and rear discs.. So I've done a calculator for the E89 with the current used and known discs, calipers and pads to look at how different combos work out. I've assumed all pads have the same coefficent of...

Much better ..very original..quite a few goodies..PDC, comfort pack, ( extended storage wind diffuser) idrive , maybe decent audio system, heated seats..no cruise ..obligatory covers missing over door screws ..they fall out..non MSport 17” wheels will float like a barge even with stock runflats

Hi Robbie yup there are two HK/Taiwan guys …problem is there 345mm solution is £2k plus vat and duty ie £2,500..mine is around £650..inc taxes And cosmetically you really need to but their front set to match ..

https://carsonline.bonhams.com/en/listings/alpina/roadster-s/8181288d-451e-4b13-8c2e-0558753afd5b?fbclid=IwY2xjawHNRuBleHRuA2FlbQIxMAABHaQrKbUtrStwCyw19uVuwKM2AkfUwOrT1QKJJUjwAuBAHUaTKsKs8wQC4Q_aem_71K4eDC6iHwCknAHIDRVvA

Another surprisingly capable CarPlay unit fitted to an idrive-less E89…again quite good audio..this one boots up very quickly…great screen and very responsive… :thumbsup: Before the cable police arrive..yes the cables could be better routed..we’ll visit that in the spring..getting a better usb...

I’ve no experience of the vibe with DSP…but I assume it does at least an ok job in a competitive market..the user s/w is the thing that makes it easy / hard to setup.. With a decent DSP setup all your other controls should be set flat..especially any speed/ volume related tone controls.. I...

I've written a primer on this subject..my first draft can be seen here.. https://www.dropbox.com/scl/fi/3slw4e4rlp4ajqotlxxva/This-article-is-about-problems-and-issues-that-are-Specific-to-the-bmw-Z4-E-eighty-nine-three-five-I-and-35-is.pdf?rlkey=xtpss004z1zh9nyy5j6pzugn3&dl=0

A quarter of motorists committing 20mph speed offences have been caught on just two roads in Wales, figures reveal. Enforcement along the A4102 Swansea Road at Gellideg, Merthyr Tydfil - which links the A465 Heads of the Valleys road and the A470 - has caught more than 8,000 drivers in 10...

I'm writing what I hope will be the definitive book on buying, owning, maintaining, upgrading and enjoying your E89! Somewhere between 500 and 1000 pages..to be published early next year. I'm looking for a whole library of pics to tbe used in the book. Specfically pics of all versions and all...

Hi Robbi..yes I discussed his 'experiment' with the G series caliper and a front E46M disc combo..his strong advice, repeated often, was don't do what he did on the rears!!! :tumbleweed: 👎 :headbang: 🤣 🤣

The subject is BMW Z4 E89 rear brake upgrades. The key point is that the E89 was one of the first BMWs to use the TRW integrated electrically operated parking brake which is part of what otherwise is an unremarkable sliding pin single piston rear caliper. Because of this, its very difficult to...

A few people I know have struggled with CarPlay and how to implement it on an E89...here's my first bash at explaining it.. https://www.dropbox.com/scl/fi/mbrg96hh85slzrivax1j8/CarPlay.pdf?rlkey=zqgtfm91cndpat9z15vkowrr0&dl=0 CarPlay Apple CarPlay and Android Auto are two very similar systems...

CherryM on the forum has a 23i with the usual lack of techno goodies.. When I suggested spending several hundred pounds on a Android head unit I could ear his wallet sealing shut.. :tumbleweed: 🤣 Not to be deterred he lashed out £50 on a TEMU car play screen...

https://auctions.hampsonauctions.com/auction/lot/3-2006-bmw-z4-alpina-roadster-s/?lot=1970&sd=1&fbclid=IwY2xjawGzFcdleHRuA2FlbQIxMQABHWgRFss_JEL5hpKYfWSKtl--3ioGSJ03l9EXJjS7G9UdinhHjeLTOcsTWg_aem_WuUFuq3RCRFohaERk4cWBw

I've added a few pics n diagrams to liven it up etc..if I go for a diagram per page its going to be 500-1000 off them..so that's 10 pages done..only 490-990 to go..any topics people suggest should be covered? I thought of a lot but bound to miss some.. New link...

Thank you…hope that format will be useful to the other sections too…too much superficial FB one liners elsewhere :tumbleweed: 🤣

No worries..I’ve never written a book before..lots of multi page proposals / technical docs etc…..bit of a learning curve ..trade off too much detail vs too superficial! :tumbleweed: 🤣

I've decided to write a book about the E89..,, I envisage it will be aroud 500-1000 pages and my plan is to use Amazon to create an E book and printed versions. Its about buying, owning, using your Z4 along with how to maintain and upgrade it..if you so wish. I'm writing various sections and...

The Yellow Peril is poorly….started her up yesterday to find almost nothing working bar the engine!🙈😥😥…plugged the Protool code reader and inundated with errors..layed down in a dark room with several beers..for several hours.. Next day ..the instrument cluster and audio system had...

Came to start the car this morning…engine started ..no instruments, no indicators, no windows, no headlights, etc etc Scanned an most of the car flooded with can bus errors.. Deep joy in trying to find where it’s gone wrong ..just one rogue wire or module and the whole car goes down…