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Question Lowering and back spacing.

I looked around but didn't see anything that applied.


I am totaly new to BMW's, so excuse my ignorance.
Im wondering what if anything needs to be done to run some 17" wheels? What would be the correct back spacing for that also?


Thanks

YETI
Buffalo NY

Last edited by YETI; 02-25-2003 at 07:14 AM..
Old 02-25-2003, 07:08 AM
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What model, year, BMW, do you have, most of the new ones can use 17's with no real mods. but need more info to answer your question.
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Old 02-25-2003, 07:35 AM
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Sorry, you would think I would know what I was doing by now!

Car is a 89 325i, stick, all stock

If the 17" won't fit, what do you suggest?

Thanks

YETI
Buffalo NY
Old 02-25-2003, 08:05 AM
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The 17's will fit, though you may have some suspension travel problems and some rubbing, depending on the offset.
Old 02-25-2003, 09:04 AM
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Thanks Jared,

Could you recomend a size that would fit with out rubbing or modifications, 15's or 16''s? I really dont want to modify anything to much.

Thanks
Old 02-25-2003, 11:21 AM
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16 inches would most likely be the limit. Keep in mind that you will also have to address the rear wheel camber if you lower the car. The overall geometry of the suspension will be changed, causing the rear wheels to bow in. The fix is to install the adjustable shock mounts.
Old 02-26-2003, 11:12 AM
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Thanks Jared,

I will probably go with a 16" x 7" wheel and a 205/15 tire
Im am also in the process of researching the different after market companies out there.
Any you can recomend?
Old 02-26-2003, 12:56 PM
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hello YETI, i have an 89 325is with 15"x7.5"bbs split rims with a 20mm offset,but i love the look of 17's on e30's ,with 17" rims you do lose some suspension travel ,but they really update the look of the car. to do it right you need adjustable camber mounts,you can find these at www.bmpdesign.com . for nice 17's goto www.bekkers.com and take a look at thier Alpina replicas,i like these but being that i spent to much money on the bbs rims i just can't seem to let them go.
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Last edited by bimmen325; 02-26-2003 at 09:43 PM..
Old 02-26-2003, 09:39 PM
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Bimmen, do you have problems with steering clearance?
Old 02-27-2003, 02:01 PM
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Hey, bimmen, whatcha' think about the that new look of the Cayenne? Your spelling aint' that bad on this side. (jus' harassin') Those guys are little, well, lets just say,.....
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sticker of Speedy Gonzales..rear bumper...
Old 02-27-2003, 02:05 PM
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well to answer your questions i don't have steering problems at all,but i'm using 205/50/VR-15s .i have a nice turning radius and no unusual tire wear. my wife drives a vw cabrioet with 17s and i had to get the fenders rolled ,its to expensive to replace front tires every 3 months so you have to roll the fenders,i dont know what the problem with those porsche drivers is but if the most important topic to them is spelling then why dont they go to grammer.com .truth is they didn't want to answer my post about the cayenne ,must be ashamed of something .the x5 my not be the most powerful sav but at least it looks good ,i would love to get a 4.6iS . my spelling is going to be off sometimes as i often post replys late at night around 1-2oclock,have trouble sleeping .before i go i would like to say that i really like this forum and everyone has been great.(except a few targa drivers) thanks .
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Old 02-27-2003, 11:14 PM
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I've been considering doing a 5 lug conversion on my 325is, so i can run the 16 inch E36 M3 wheels. I'm going to have to replace the ball joints soon, so I may do the conversion at the same time.
Old 02-28-2003, 07:54 AM
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now that is something i have also contemplated!i know BMP did it to thier project e30 . i don't know everything needed to do this or the cost but i would just love a set of e46 m3 wheels on my car either 16" or 17" . i know my dealer would be stunned if i drove in with 5 lugs. if you do this please post as much info as you can as this is something i feel is worth doing as e30 4lug wheels are getting harder to find. i have seen a few mags from the U.K. with advertisers of newer bmw replicas like the m3 lightweight wheels in 4lugs but none in the U.S. keep us informed of this if you decide to do it .
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Last edited by bimmen325; 02-28-2003 at 08:39 PM..
Old 02-28-2003, 08:37 PM
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Now thats something i woulds like to know more about. Do you have any leads for that UK supplier of wheels?
Old 03-03-2003, 09:17 AM
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hey Jared,heres the sites with replica wheels for 4lug e30s www.autovogue.com and www.topgear.co.uk .i emailed autovogue and asked for info and pricing,so i hope to hear from them soon .the cool thing i saw on thier site are 5 star hamann wheels on a 325 .they advertise in Performance BMW magazine . now if only Pelican Parts could hook us-up with these wheels.or perhaps a group buy? i will post back as soon as i hear something from autovogue.
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Old 03-03-2003, 01:53 PM
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How, exactly, do you lose suspension travel by installing 17 inch wheels? Besides the fact that hey look silly on an E30, (M3 excepted) if you keep the overall tire diameter the same, (a 215/40 would be close), you don't lose anything. Oh wait, since a 17 inch wheel will be MUCH heavier than a 14 or 15, you will lose some acceleration. You'd probably need between a 25-30mm offset on a 17.

Jim
Old 03-16-2003, 07:01 PM
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i am sorry i forgot to mention that when you use 17" rims ,your car will look like a 4x4 unless you drop it ,whitch in turn makes you lose suspension travel .i don't know why this is but it will even though the aspect ratio is close .also you can find 17" rims that weigh less than 15" rims .just remember more weight =more rotational inertia(not good).the correct offset for a 89 325is is 20mm.
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Old 03-16-2003, 11:06 PM
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I agree. But you wouldn't lose anymore suspension travel than with a dropped car using 14, 15, or 16 inch wheels, assuming the overal wheel tire diameter is the same. Heck, even my car looked pretty funny with 225/50/15's before the drop! And you're right about being able to find lightweight 17 inch wheels, but they are BIG $$$$$$$$$.

Cheers, Jim
Old 03-17-2003, 09:40 AM
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Hello, I'm new here, but thought I can help. All pics are with the car lowered 1.5" with H&R sports. Here is my car with 17x7's, 205/40/17's, and 35 mm offset. I didn't like the way they looked
since they sat in too far in the back. No rubbing whatsoever.
http://www.imagestation.com/picture/sraid56/p4c0566b34dd44e39be4d0b581c841c2b/fc763486.jpg

Here it is with the same size wheels and tires except for the offset, which is 40mm, along with 15mm H&R spacers, for an effective offset of 25mm. Again, no rubbing problems, and looked right, but the extra rotating mass slowed down my 318 too much.

http://www.imagestation.com/picture/sraid20/pc351aea604581678346a945a7810ea38/fdbf1399.jpg

This is my current and last setup. 16x7 Panasports with 225/40/16's with 25mm offset, no rubbing and can get much more rubber on the ground.

Hope this helps.
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Old 03-23-2003, 04:56 AM
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Dammit, forgot the last link.

http://www.imagestation.com/picture/sraid24/pbf8680c16c43b25117c43e8ce40d7bc8/fd962d23.jpg
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Old 03-23-2003, 05:00 AM
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Old 03-23-2003, 05:00 AM
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