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19" alloys

Alloy wheels and tyre discussion
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Woodmic
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19" alloys

Post by Woodmic » Fri Aug 11, 2017 5:26 am

Hi l have recently purchased a late 2009 z4 coupe l would like to fit 19" alloys and tyres but do not want to upset the cars handling or have problems with tyres rubbing thanks
Michael

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mr wilks
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19" alloys

Post by mr wilks » Fri Aug 11, 2017 11:22 am

Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
3 ZMRs
3 E89s
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997 C4
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Buckz
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19" alloys

Post by Buckz » Fri Aug 11, 2017 11:33 am

mr wilks wrote: Fri Aug 11, 2017 11:22 am Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o

https://www.dropbox.com/s/8gsxy7j26sa1h ... 3.jpg?dl=0
Last edited by Buckz on Fri Aug 11, 2017 11:36 am, edited 1 time in total.
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jamie_z4
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19" alloys

Post by jamie_z4 » Fri Aug 11, 2017 11:36 am

Buckz wrote: Fri Aug 11, 2017 11:33 am
mr wilks wrote: Fri Aug 11, 2017 11:22 am Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o
ive got et30 18x10J rear 225 rubber

no rubbing :o

:rofl:
18 Z4s owned to date.

Current: 2.5i Titan silver

Daily driver: 480bhp M140i Shadow edition.

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Buckz
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19" alloys

Post by Buckz » Fri Aug 11, 2017 11:37 am

jamie_z4 wrote: Fri Aug 11, 2017 11:36 am
Buckz wrote: Fri Aug 11, 2017 11:33 am
mr wilks wrote: Fri Aug 11, 2017 11:22 am Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o
ive got et30 18x10J rear 225 rubber

no rubbing :o

:rofl:
rears are usually fine on z4's it's the front that causes the problems :evil:
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19" alloys

Post by jamie_z4 » Fri Aug 11, 2017 11:38 am

Buckz wrote: Fri Aug 11, 2017 11:37 am
jamie_z4 wrote: Fri Aug 11, 2017 11:36 am
Buckz wrote: Fri Aug 11, 2017 11:33 am

I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o
ive got et30 18x10J rear 225 rubber

no rubbing :o

:rofl:
rears are usually fine on z4's it's the front that causes the problems :evil:
true - im on a 205 40 18 front 8.5J et25 - seems i could have got away with a 215 then going off your fronts :)
18 Z4s owned to date.

Current: 2.5i Titan silver

Daily driver: 480bhp M140i Shadow edition.

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Buckz
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19" alloys

Post by Buckz » Fri Aug 11, 2017 11:40 am

jamie_z4 wrote: Fri Aug 11, 2017 11:38 am
Buckz wrote: Fri Aug 11, 2017 11:37 am
jamie_z4 wrote: Fri Aug 11, 2017 11:36 am

ive got et30 18x10J rear 225 rubber

no rubbing :o

:rofl:
rears are usually fine on z4's it's the front that causes the problems :evil:
true - im on a 205 40 18 front 8.5J et25 - seems i could have got away with a 215 then going off your fronts :)
probably, keep in mind that I'm stock sport suspension.

I have a feeling that on eibachs it'll rub a little and I might have to go for 215's up front. We'll see next year :rofl:
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19" alloys

Post by jamie_z4 » Fri Aug 11, 2017 11:42 am

Buckz wrote: Fri Aug 11, 2017 11:40 am
jamie_z4 wrote: Fri Aug 11, 2017 11:38 am
Buckz wrote: Fri Aug 11, 2017 11:37 am

rears are usually fine on z4's it's the front that causes the problems :evil:
true - im on a 205 40 18 front 8.5J et25 - seems i could have got away with a 215 then going off your fronts :)
probably, keep in mind that I'm stock sport suspension.

I have a feeling that on eibachs it'll rub a little and I might have to go for 215's up front. We'll see next year :rofl:
ohhhhh yea so you are.

Yea think i'll stick with me 205s then :)

You might get away with trimming your arch liner
18 Z4s owned to date.

Current: 2.5i Titan silver

Daily driver: 480bhp M140i Shadow edition.

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Joycey
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19" alloys

Post by Joycey » Fri Aug 11, 2017 11:53 am

My new fronts are ET37 going to be snug under there :rofl:
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19" alloys

Post by jamie_z4 » Fri Aug 11, 2017 12:10 pm

Joycey wrote: Fri Aug 11, 2017 11:53 am My new fronts are ET37 going to be snug under there :rofl:
I fitted the 313s on mine with coilovers on a 225/35/19 which are the same specs as your style 225M wheels with no issues even at my height.
18 Z4s owned to date.

Current: 2.5i Titan silver

Daily driver: 480bhp M140i Shadow edition.

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mr wilks
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19" alloys

Post by mr wilks » Fri Aug 11, 2017 12:50 pm

Buckz wrote: Fri Aug 11, 2017 11:33 am
mr wilks wrote: Fri Aug 11, 2017 11:22 am Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o

https://www.dropbox.com/s/8gsxy7j26sa1h ... 3.jpg?dl=0

OP has asked about 19s not 18s , does make a difference depending on tyres , springs , roadster , coupe etc , so many factors as discussed many times . there is no one size fits all Zs magic formula :roll:
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

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Buckz
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19" alloys

Post by Buckz » Fri Aug 11, 2017 1:47 pm

mr wilks wrote: Fri Aug 11, 2017 12:50 pm
Buckz wrote: Fri Aug 11, 2017 11:33 am
mr wilks wrote: Fri Aug 11, 2017 11:22 am Aim for 8j front , 9j rears & et numbers around 40
8.5j fronts , 9.5j rears will be more common & will work but definitely don't go under et40 for the fronts , rears will be fine down to low 30s
Once wheel sizes are known choose the tyre sizes to suit & don't just go off whoever is supplying the wheels :wink:
I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o

https://www.dropbox.com/s/8gsxy7j26sa1h ... 3.jpg?dl=0

OP has asked about 19s not 18s , does make a difference depending on tyres , springs , roadster , coupe etc , so many factors as discussed many times . there is no one size fits all Zs magic formula :roll:
over-all the size is pretty much the same ? you go up in size and go down in sidewall?

his is a coupe, 3.0, sport. Same as mine ;)
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mr wilks
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19" alloys

Post by mr wilks » Fri Aug 11, 2017 2:08 pm

Buckz wrote: Fri Aug 11, 2017 1:47 pm
mr wilks wrote: Fri Aug 11, 2017 12:50 pm
Buckz wrote: Fri Aug 11, 2017 11:33 am

I've got 18's

18x8.5 front et30.. 225 rubber

no rubbing :o

https://www.dropbox.com/s/8gsxy7j26sa1h ... 3.jpg?dl=0

OP has asked about 19s not 18s , does make a difference depending on tyres , springs , roadster , coupe etc , so many factors as discussed many times . there is no one size fits all Zs magic formula :roll:
you go up in size and go down in sidewall?

his is a coupe, 3.0, sport. Same as mine ;)
Supposedly yeah , which is why i said once the wheel size & offset is known then you can decide the tyre size which is as important as the previous 2 sizes .
I said not to go under et 40 as the op specifically mentioned he didn't want rubbing :wink: which i interpreted as he'd rather not play the game of chance & end with the usual " it just rubs a very little when full lock or when i go over a certain hump in road " :cry: nothing worse imo
3 ZMRs
3 E89s
5 Si coupes
5 Si roadsters
997 C4
TTRS
F82 M4
MK7 Golf Gti
current Bmw 6 Gran Turismo

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