Double check wheel fitment???

Spedracer81 · 10-25-2012, 03:35 PM

I'm looking at a set of hamann 19" x 8.5 et38 wheels for my 08 Z4MC..will theses fit without any issues?..
Thanks...

v3.2mc · 10-25-2012, 04:57 PM

are they square? if so you'll need a spacer in back.

8.5 et38 is perfect for the front.

Spedracer81 · 10-25-2012, 05:22 PM

what size spacer? square?

itdnwiwbp · 10-25-2012, 05:29 PM

Square=same size front and back wheels/tires. Sorry, can't help with correct spacer size.

v3.2mc · 10-25-2012, 09:18 PM

read this thoroughly. you'll need this and this too.

these 3 links combined provide a very good insight into choosing a wheel and tire combination that works with the ///m cars. there is a LOT of info in there, and it can be overwhelming... but take the time to read it. no one here can choose the stance you want for you.

as for spacers: they will make a non-aggressive offset fit where an aggressive offset is supposed to be. the rear of the ///m starts with a 9.0 et30... going to a 8.5 et38 will cause the wheel to move in towards the center of the car. spacers correct for this movement. note that you will also need longer studs to make this change work, but only for the wheels installed with spacers. see the first link above for fitments using spacers as well as properly chosen offsets that do not require them.

dubsesd · 10-25-2012, 09:40 PM

You will need a 25mm spacer for the rear. But that rim is too narrow for the back end. It's smaller than stock

RobMCoupe · 10-25-2012, 09:59 PM

OEM CSL have ET 44 offset for the front. You might need 5mm spacer to prevent rubbing on the strut.

The HACK · 10-25-2012, 11:34 PM

Quote:

Originally Posted by RobMCoupe

OEM CSL have ET 44 offset for the front. You might need 5mm spacer to prevent rubbing on the strut.

The offset numbers are negative, meaning the smaller the number, the further away from the surface of the hub it moves. So the ET44 offset of the CSL is actually 6mm CLOSER to the strut than the ET38 of the Hamann OP is interested in.

The problem with the fitment is in the rear, where the OE offset is in the 26-30mm range, while the Hamann wheels are 38 for the entire set. To make the REARS work OP will need 10-15mm of spacers on the narrower 8.5" wheels.

Spedracer81 · 10-26-2012, 08:59 AM

I think I'm going to go a different direction..I really do not want to use spacers..thanks for all the input

10-25-2012, 03:35 PM	#1
Spedracer81 Second Lieutenant 15 Rep 247 Posts Drives: Z4MC Join Date: Sep 2012 Location: New Jersey iTrader: (0)	Double check wheel fitment??? I'm looking at a set of hamann 19" x 8.5 et38 wheels for my 08 Z4MC..will theses fit without any issues?.. Thanks...
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10-25-2012, 04:57 PM	#2
v3.2mc Not a New Member 94 Rep 925 Posts Drives: with both hands and both feet Join Date: Mar 2012 Location: midwest iTrader: (4) Garage List 2007 ///M Coupé [10.00]	are they square? if so you'll need a spacer in back. 8.5 et38 is perfect for the front. __________________ #1498E86 \| Sepang Bronze \| Dark Sepang Leather \| Carbon Leather Trim
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10-25-2012, 05:22 PM	#3
Spedracer81 Second Lieutenant 15 Rep 247 Posts Drives: Z4MC Join Date: Sep 2012 Location: New Jersey iTrader: (0)	what size spacer? square?
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10-25-2012, 05:29 PM	#4
itdnwiwbp Major 78 Rep 1,443 Posts Drives: 330iZHP Join Date: Jun 2012 Location: Long Beach, CA iTrader: (10)	Square=same size front and back wheels/tires. Sorry, can't help with correct spacer size. __________________
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10-25-2012, 09:18 PM	#5
v3.2mc Not a New Member 94 Rep 925 Posts Drives: with both hands and both feet Join Date: Mar 2012 Location: midwest iTrader: (4) Garage List 2007 ///M Coupé [10.00]	read this thoroughly. you'll need this and this too. these 3 links combined provide a very good insight into choosing a wheel and tire combination that works with the ///m cars. there is a LOT of info in there, and it can be overwhelming... but take the time to read it. no one here can choose the stance you want for you. as for spacers: they will make a non-aggressive offset fit where an aggressive offset is supposed to be. the rear of the ///m starts with a 9.0 et30... going to a 8.5 et38 will cause the wheel to move in towards the center of the car. spacers correct for this movement. note that you will also need longer studs to make this change work, but only for the wheels installed with spacers. see the first link above for fitments using spacers as well as properly chosen offsets that do not require them. __________________ #1498E86 \| Sepang Bronze \| Dark Sepang Leather \| Carbon Leather Trim
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10-25-2012, 09:40 PM	#6
dubsesd #dubspec 6332 Rep 5,201 Posts Drives: G05 X5/ 2016 F80 M3 INDVL Join Date: Jul 2011 Location: Ottawa iTrader: (2)	You will need a 25mm spacer for the rear. But that rim is too narrow for the back end. It's smaller than stock __________________ LCI ///F80 M3 Individual Atlantis Metallic / Black Full / Carbon Cermics / 6MT MPE / M Performance & Carbon package / KW v3 / 20" HRE R101LW / 20" HRE 527s / Michelin PSS / 20% tint / 3d Design / Streckenn splitters / OEM GTS hood / EAS Carbon seatbacks / Carbon RKP sideskirt / Bootmod3 / M Performance Tri color alcantara / AWE S Flow instagram: @ dubsesd
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10-25-2012, 09:59 PM	#7
RobMCoupe Captain 60 Rep 932 Posts Drives: 2007 Z4 M Coupe Join Date: Feb 2010 Location: Bay Area iTrader: (6)	OEM CSL have ET 44 offset for the front. You might need 5mm spacer to prevent rubbing on the strut.
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10-26-2012, 08:59 AM	#9
Spedracer81 Second Lieutenant 15 Rep 247 Posts Drives: Z4MC Join Date: Sep 2012 Location: New Jersey iTrader: (0)	I think I'm going to go a different direction..I really do not want to use spacers..thanks for all the input
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