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Will M4 Wheels fit the E89 Z4

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
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Valor1
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Will M4 Wheels fit the E89 Z4

Post by Valor1 » Sat Jun 10, 2017 5:24 pm

Tumnus wrote: Wed Jun 07, 2017 9:36 am Yes they should fit just fine, chap in Germany has them fitted, the offset is the same as the 326m so they'll extend another half inch into your wheel arch, and half an inch outwards compared to the 326 wheels.
http://www.zroadster.com/forum/index.ph ... hr.109152/

Wheel specs:
Front Wheels: 9Jx19 ET29 (p/n BMW 36112284755)
Rear Wheels: 10Jx19 ET40 (p/n BMW 36112284756)
Thank you!

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Valor1
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Will M4 Wheels fit the E89 Z4

Post by Valor1 » Sat Jun 10, 2017 5:34 pm

mr wilks wrote: Sat Jun 10, 2017 10:02 am
Valor1 wrote: Sat Jun 10, 2017 2:28 am Tirerack has BBS wheels that are 19 x 9.5 front and 10.5 rear that weigh just 16.5 front and 17.5 rear!!!! Super expensive but OMB amazing. I heard a formula that states for every one pound of rotating mass you reduce it is like taking 4 pounds of weight off the car. So if these wheels weigh a stunning 40 pounds less than OEM that would be like taking 160 pounds off the car. That's a weight difference you can really feel and measure! BBS FI-R
I understand power to weight equation but why buy a E89 then get hung up on how heavy it is :? they are never going to be svelte or lithe with the roof weight + mech they are carrying :cry:
Weight is relative. An Aston Martin V12 Vantage S Roadster weighs nearly 3,900 pounds and puts out 565 hp. From what I'm seeing with proper bolt on parts the N54 Z4 can put out 450-470 hp and with a manual gearbox weighs around 3300 pounds. I have a set of corner balancing scales so I intend to weigh the car and get an EXACT weight.

But if the Z4 does weigh 3300 pounds and puts out 450 plus hp that's a better hp ratio than the 993 Twin Turbo Porsche.

The Audi R8 V10 spider weighs 3960 pounds and puts out 525 hp.

Interestingly it is also right around the same power / weight ratio as an Aston Martin V12 Vantage and unlike the AM the BMW has a metal roof and a bunch of features the Aston lacks.

It would have a better power to weight ratio than an R8 V10 yet unlike the Audi it has a usable trunk and a metal roof.

So the Z4 N54 is really a wolf in sheep's clothing.

Fazerfahrer
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Will M4 Wheels fit the E89 Z4

Post by Fazerfahrer » Mon Jun 19, 2017 3:38 pm

Hello,

I'm just new on the board and saw that you are looking for Z4 with 437M.

I'm driving the 437M since last year. As we need to get the confirmation from our "TÜV" for most changes I choosed tyre set up close to the original dimensions.

Front: 9x19" ET 29 with 235/35-19 Michelin PS4S
Rear: 10x19" ET 40 with 265/30-19 Michelin PS4S

Two weeks ago I changed the suspension to KW V3 coilovers.
IMG_1614.JPG
IMG_1614.JPG (166.35 KiB) Viewed 543 times
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IMG_1548.JPG (201.11 KiB) Viewed 543 times
IMG_1549.JPG
IMG_1549.JPG (175.36 KiB) Viewed 543 times
Regards Thorsten

E89 Z4 35is valencia orange 2015

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Valor1
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Will M4 Wheels fit the E89 Z4

Post by Valor1 » Tue Jun 20, 2017 5:17 am

Fazerfahrer wrote: Mon Jun 19, 2017 3:38 pm Hello,

I'm just new on the board and saw that you are looking for Z4 with 437M.

I'm driving the 437M since last year. As we need to get the confirmation from our "TÜV" for most changes I choosed tyre set up close to the original dimensions.

Front: 9x19" ET 29 with 235/35-19 Michelin PS4S
Rear: 10x19" ET 40 with 265/30-19 Michelin PS4S

Two weeks ago I changed the suspension to KW V3 coilovers.

IMG_1614.JPG

IMG_1548.JPG

IMG_1549.JPG
Wow! Thank you! It looks very aggressive :) Do you have any rubbing issues? They look like the are out pretty far. If you put a 275mm rear tire on their do you think they would rub? Is there more inner wheel clearance (between the inner edge of the tire and the inner fender well)?

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Will M4 Wheels fit the E89 Z4

Post by Fazerfahrer » Tue Jun 20, 2017 7:24 am

Hello,

normally you have rubbing issues at the rear at the inner plastic fender like you have if you use the standard rims with 12 or 15mm spacers. Therefore you need just to modify the plastic fender.
It also depends which brand of tyre you choose, last year I drove the Goodyear F1 Asymetric 2 which is one of the widest tyres I know, so you have to expect more rubbing than with the Michelin PS4S I use since some weeks.
Regards Thorsten

E89 Z4 35is valencia orange 2015

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Will M4 Wheels fit the E89 Z4

Post by Valor1 » Thu Jun 22, 2017 7:18 pm

mr wilks wrote: Sat Jun 10, 2017 10:02 am
Valor1 wrote: Sat Jun 10, 2017 2:28 am Tirerack has BBS wheels that are 19 x 9.5 front and 10.5 rear that weigh just 16.5 front and 17.5 rear!!!! Super expensive but OMB amazing. I heard a formula that states for every one pound of rotating mass you reduce it is like taking 4 pounds of weight off the car. So if these wheels weigh a stunning 40 pounds less than OEM that would be like taking 160 pounds off the car. That's a weight difference you can really feel and measure! BBS FI-R
I understand power to weight equation but why buy a E89 then get hung up on how heavy it is :? they are never going to be svelte or lithe with the roof weight + mech they are carrying :cry:
Not sure what you mean? I can see getting the weight of an E89 Z4 down to around 3200 pounds for my Sdrive35i with its manual gearbox. With bolt on tuning equipment (JB4, catless downpipes, FMIC, chargepipe, silicone hoses, DCI) horsepower can be around 450.

In today's day and age 3200 pounds, including the aluminum retractable roof, is actually pretty light.

Aston Martin Vantage Roadster weighs hundreds of pounds more as does the Ferrari F12 and Lamborghini Aventador.

A four cylinder 2017 Boxster weighs 3,054 pounds (with PDK) and only puts out 350 hp.

A 2017 911 conv. weighs over 3,300 pounds and puts out 370 hp.

A Ferrari 360 puts out 400 hp and weighs 3,200 pounds.

Put some 255 mm tires up front and 295 tires in the rear on light weight forged wheels along with the aforementioned bolt-on parts and you have a car that will be extremely capable and keep up with much more expensive and more modern machines.

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Will M4 Wheels fit the E89 Z4

Post by Valor1 » Fri Jun 23, 2017 12:10 am

Fazerfahrer wrote: Tue Jun 20, 2017 7:24 am Hello,

normally you have rubbing issues at the rear at the inner plastic fender like you have if you use the standard rims with 12 or 15mm spacers. Therefore you need just to modify the plastic fender.
It also depends which brand of tyre you choose, last year I drove the Goodyear F1 Asymetric 2 which is one of the widest tyres I know, so you have to expect more rubbing than with the Michelin PS4S I use since some weeks.
Thank you!

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Will M4 Wheels fit the E89 Z4

Post by DinosaurEyes » Sat Jun 24, 2017 12:34 am

Valor1 wrote: Wed Jun 07, 2017 7:29 pm
cerbera wrote: Wed Jun 07, 2017 12:20 pm Didnt Mr Wilks old E89 have these wheels?


Image
That looks interesting! I wonder if he had any rubbing issues and what size tires he used. Looks nice and aggressive and from whnat I have read these wheels are wider and lighter than the comparable z4 wheels.
That's my car! No issues with rubbing! :thumbsup:

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