Winter Wheels

rmorin49 · 02-09-2010, 01:25 PM

I've located a set of refurbished BMW wheels that the vendor says will fit my Z4. I have asked for more details on their specs and will post as soon as I receive it. I need some assistance in determining if they will fit properly. My main concern is the offset. Just received a picture, trying to get offset numbers. Anyone know the style number of this wheel?

Memphis1 · 02-09-2010, 02:09 PM

looks like style 138

http://www.realoem.com/bmw/showparts...73&hg=36&fg=15

what i did was i kept the 293's but with winter tires and in the spring i'll get the 313 with summer tires. that way it looks good year round and not retarded with little 17" wheels.

ChuckB · 02-09-2010, 02:15 PM

These have an offset of 20, vice the same size "290" wheels recommended for the Z4 of 29, so double check for any interference between the tire and the suspension/wheel well before you put down money

ChuckB · 02-09-2010, 02:17 PM

Quote:

Originally Posted by memphis2012

looks like style 138

http://www.realoem.com/bmw/showparts...73&hg=36&fg=15

what i did was i kept the 293's but with winter tires and in the spring i'll get the 313 with summer tires. that way it looks good year round and not retarded with little 17" wheels.

With the exception of Mud Flaps, I do not think it is possible for a Z4 to look "retarded", this is borderline Blasphemy

rmorin49 · 02-09-2010, 02:21 PM

As I will only be running winter tires for about 3 months and probably not a lot of driving I am not too concerned with looks. A set of decent 17" tires is considerably cheaper than 18s as well.

So, am I to understand that if these wheels are a 20 offset they should be OK? Since my car is an s30i, the size of the brakes should not be a problem, correct?

Memphis1 · 02-09-2010, 02:50 PM

assuming that the new set is the same all around (7,5x17 225/50R17)
they'll fit and they will have 15mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 3mm in the front and 33mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 7mm in the rear.

rmorin49 · 02-09-2010, 03:09 PM

Quote:

Originally Posted by memphis2012

assuming that the new set is the same all around (7,5x17 225/50R17)
they'll fit and they will have 15mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 3mm in the front and 33mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 7mm in the rear.

Sounds like this should work fine. Thanks.

Added: 5:45 pm, Vendor just replied and said wheels weigh 27 lbs and the offset is 43 mm. I don't think these will work, will they? Perhaps I'll just leave the Z garaged during bad weather.

Here is their answer when I questioned the offset: "Being these rims are 7.5" in width, the offset of 43mm should be fine. The normal size is 8" with a 47mm offset."

rmorin49 · 02-10-2010, 01:20 PM

Bump to see if anyone can review the offsets and let me know if these will work. Vendor is too far away to have them test fitted so I need to know if they will work with my car and 225-45-17 tires. Thanks.

Memphis1 · 02-10-2010, 01:55 PM

hold on,

the specs for the #138 are:
7,5x17 - 225/50R17 - ET 20
7,5x17 - 225/50R17 - ET 43

is he telling you something different??

your current wheels are #294:

8x18 - 225/40R18 - ET 29
8,5x18 - 255/35R18 - ET 40

rmorin49 · 02-10-2010, 02:20 PM

Vendor is saying all 4 wheels are the same; 17 x 7.5, offset 43. If I buy them as winter wheels I will put 225-45-17 tires all around.

I think I'll just try to sell my RFTs and put a nice set of all season tires on the car as I did with my 335. It gets too cold in western MD to use the summer tires all year round but in a normal winter we don't get much snow. This year has been unusual to say the least. We have over 3 feet of snow on the ground right now.

Memphis1 · 02-10-2010, 03:20 PM

oh, ok. so in that case the rears will be the same specs i provided before but the fronts will be 8mm LESS clearance on the strut side, and the outside edge of the wheel will RETRACT 20mm.

i know about the snow, here in CT i have maybe 4-6", but i was watching how you guys in MD and DC got hit hard.

Kief · 02-12-2010, 07:21 AM

Quote:

Originally Posted by rmorin49

Bump to see if anyone can review the offsets and let me know if these will work. Vendor is too far away to have them test fitted so I need to know if they will work with my car and 225-45-17 tires. Thanks.

Hey Randall,
I've been happy with my setup:
http://e89.zpost.com/forums/showthread.php?t=330691

Have you checked out Tirerack?

rmorin49 · 02-12-2010, 08:49 AM

Quote:

Originally Posted by Kief

Hey Randall,
I've been happy with my setup:
http://e89.zpost.com/forums/showthread.php?t=330691

Have you checked out Tirerack?

Thanks. I'm leaning toward ditching the RFTs and installing a set of Continental DWS tires so I can use them all year. Normally, we don't get much snow that stays on the road and if it does I'll drive my R32.

Vintage · 02-12-2010, 11:56 AM

I even need winter wheels today in Texas - we had 12 inches of snow yesterday, which is an all time record for this area

rmorin49 · 02-12-2010, 03:11 PM

Quote:

Originally Posted by VintageBMW

I even need winter wheels today in Texas - we had 12 inches of snow yesterday, which is an all time record for this area

Yes, I saw that DFW airport set a record for snowfall in a single day.

02-09-2010, 01:25 PM	#1
rmorin49 Major 53 Rep 1,162 Posts Drives: 11 335d/10 Z4 s30i Join Date: Nov 2006 Location: Hagerstown, MD iTrader: (1)	Winter Wheels I've located a set of refurbished BMW wheels that the vendor says will fit my Z4. I have asked for more details on their specs and will post as soon as I receive it. I need some assistance in determining if they will fit properly. My main concern is the offset. Just received a picture, trying to get offset numbers. Anyone know the style number of this wheel? Attached Images __________________ Colonel (Retired), US Army/Hagerstown, MD 2016 518ixdrive/MSport AW/Ivory White ED-01-10 2010 Z4s30i AW/Beige/Burl/ 6MT/SP/PP/CWP/NAV/ipod/USB/CA (retired) 2011 335d BS/Oyster/PP/CWP/NAV/ipod/USB(Daily Driver) 30+ mpg(retired) Last edited by rmorin49; 02-09-2010 at 01:35 PM..
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02-09-2010, 02:09 PM	#2
Memphis1 Lieutenant Colonel 89 Rep 1,838 Posts Drives: Z4 SDrive 35i Join Date: Oct 2009 Location: CT iTrader: (0)	looks like style 138 http://www.realoem.com/bmw/showparts...73&hg=36&fg=15 what i did was i kept the 293's but with winter tires and in the spring i'll get the 313 with summer tires. that way it looks good year round and not retarded with little 17" wheels. __________________
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02-09-2010, 02:15 PM	#3
ChuckB Lieutenant 17 Rep 448 Posts Drives: 2020 X2 2.0i Join Date: Mar 2008 Location: Hockenheim, Germany (APO) iTrader: (0)	These have an offset of 20, vice the same size "290" wheels recommended for the Z4 of 29, so double check for any interference between the tire and the suspension/wheel well before you put down money
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02-09-2010, 02:21 PM	#5
rmorin49 Major 53 Rep 1,162 Posts Drives: 11 335d/10 Z4 s30i Join Date: Nov 2006 Location: Hagerstown, MD iTrader: (1)	As I will only be running winter tires for about 3 months and probably not a lot of driving I am not too concerned with looks. A set of decent 17" tires is considerably cheaper than 18s as well. So, am I to understand that if these wheels are a 20 offset they should be OK? Since my car is an s30i, the size of the brakes should not be a problem, correct? __________________ Colonel (Retired), US Army/Hagerstown, MD 2016 518ixdrive/MSport AW/Ivory White ED-01-10 2010 Z4s30i AW/Beige/Burl/ 6MT/SP/PP/CWP/NAV/ipod/USB/CA (retired) 2011 335d BS/Oyster/PP/CWP/NAV/ipod/USB(Daily Driver) 30+ mpg(retired)
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02-09-2010, 02:50 PM	#6
Memphis1 Lieutenant Colonel 89 Rep 1,838 Posts Drives: Z4 SDrive 35i Join Date: Oct 2009 Location: CT iTrader: (0)	assuming that the new set is the same all around (7,5x17 225/50R17) they'll fit and they will have 15mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 3mm in the front and 33mm MORE clearance on the strut side, and the outside edge of the wheel will EXTEND an extra 7mm in the rear. __________________
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02-10-2010, 01:20 PM	#8
rmorin49 Major 53 Rep 1,162 Posts Drives: 11 335d/10 Z4 s30i Join Date: Nov 2006 Location: Hagerstown, MD iTrader: (1)	Bump to see if anyone can review the offsets and let me know if these will work. Vendor is too far away to have them test fitted so I need to know if they will work with my car and 225-45-17 tires. Thanks. __________________ Colonel (Retired), US Army/Hagerstown, MD 2016 518ixdrive/MSport AW/Ivory White ED-01-10 2010 Z4s30i AW/Beige/Burl/ 6MT/SP/PP/CWP/NAV/ipod/USB/CA (retired) 2011 335d BS/Oyster/PP/CWP/NAV/ipod/USB(Daily Driver) 30+ mpg(retired)
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02-10-2010, 01:55 PM	#9
Memphis1 Lieutenant Colonel 89 Rep 1,838 Posts Drives: Z4 SDrive 35i Join Date: Oct 2009 Location: CT iTrader: (0)	hold on, the specs for the #138 are: 7,5x17 - 225/50R17 - ET 20 7,5x17 - 225/50R17 - ET 43 is he telling you something different?? your current wheels are #294: 8x18 - 225/40R18 - ET 29 8,5x18 - 255/35R18 - ET 40 __________________
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02-10-2010, 02:20 PM	#10
rmorin49 Major 53 Rep 1,162 Posts Drives: 11 335d/10 Z4 s30i Join Date: Nov 2006 Location: Hagerstown, MD iTrader: (1)	Vendor is saying all 4 wheels are the same; 17 x 7.5, offset 43. If I buy them as winter wheels I will put 225-45-17 tires all around. I think I'll just try to sell my RFTs and put a nice set of all season tires on the car as I did with my 335. It gets too cold in western MD to use the summer tires all year round but in a normal winter we don't get much snow. This year has been unusual to say the least. We have over 3 feet of snow on the ground right now. __________________ Colonel (Retired), US Army/Hagerstown, MD 2016 518ixdrive/MSport AW/Ivory White ED-01-10 2010 Z4s30i AW/Beige/Burl/ 6MT/SP/PP/CWP/NAV/ipod/USB/CA (retired) 2011 335d BS/Oyster/PP/CWP/NAV/ipod/USB(Daily Driver) 30+ mpg(retired)
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02-10-2010, 03:20 PM	#11
Memphis1 Lieutenant Colonel 89 Rep 1,838 Posts Drives: Z4 SDrive 35i Join Date: Oct 2009 Location: CT iTrader: (0)	oh, ok. so in that case the rears will be the same specs i provided before but the fronts will be 8mm LESS clearance on the strut side, and the outside edge of the wheel will RETRACT 20mm. i know about the snow, here in CT i have maybe 4-6", but i was watching how you guys in MD and DC got hit hard. __________________
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02-12-2010, 11:56 AM	#14
Vintage Colonel 378 Rep 2,588 Posts Drives: BMW G80 (MT), 718 Spyder Join Date: Aug 2009 Location: Austin, Texas iTrader: (0)	I even need winter wheels today in Texas - we had 12 inches of snow yesterday, which is an all time record for this area
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