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      03-18-2008, 01:14 AM   #1
Mguy2008
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M3 wheels questions

My M3 is on order so i have been looking for aftermarket wheels.

I decided to go aftermarket because the 18s look crappy and i dont think the 19s are worth 1200 and everyone is saying they are 2 heavy. Besides 90% of the M3s out there will have the oem 19s and i want to be different.

So i decided to get the oem 18s and put the 1200 towards the aftermarket wheels.

I decided on the SSR GT3s. in 19 inch. How do you guys think these will look on the E90 M3. I saw them on an E46 in person and they looked amazing.

I want to go one size up with the tires. I am considering 255/30s up front and 275/30s in back. Do you think this size will cause and rubbing or other problems.

Last question the SSR GT3 wieght 27lbs. that seems light for 19s. Does anyone know the weights on the oem 19 and 18 inchers
Thanks
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      03-18-2008, 02:32 AM   #2
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Question

Did you check out the wheels and tires at www.tirerack.com ?

I think that the stock 19" wheels weigh about 30 lb.

The BBS wheels look great!
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      03-20-2008, 08:44 PM   #3
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i have the ssr's on my e46 m3 right now. imo they're the best looking wheels out there for this car.

i'm looking to get the 08 m3, and i'd really like to put the ssr's on it, but there's no info on whether they would fit or not.

any ideas?

they're 19", btw
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      03-20-2008, 09:46 PM   #4
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Your rears may be ok, but the front will probably sit in (depending on what offest you are using). The factory offset on the new M3 is ET29 on a 8.5 front wheel.

To the OP, since you are still in the process of looking for wheels, I would wait another month or so, so that further test fitting on the car can be done and some further fitments can be confirmed.

The M3 will be a whole new fitment, just like how the current gen non-M 3 series was a whole new fitment, especially on the rear.

Quote:
Originally Posted by Rea///M3 View Post
i have the ssr's on my e46 m3 right now. imo they're the best looking wheels out there for this car.

i'm looking to get the 08 m3, and i'd really like to put the ssr's on it, but there's no info on whether they would fit or not.

any ideas?

they're 19", btw
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      03-20-2008, 09:50 PM   #5
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Wheel stuff

Quote:
Originally Posted by Rea///M3 View Post
i have the ssr's on my e46 m3 right now. imo they're the best looking wheels out there for this car.

i'm looking to get the 08 m3, and i'd really like to put the ssr's on it, but there's no info on whether they would fit or not.

any ideas?

they're 19", btw
The offset and width are important. We haven't seen enough fitments for this car yet to sort out the best combo. The tires Mguy mentions will be a little smaller OD than stock; the fronts at least would want to be 35 aspect ratio. I may go 9"/10" monoforged wheels with 265/35 & 295/30. Need to figure out the offset issue first.

30 lbs is pretty heavy for a 9.5" forged 19. I wonder if that's rumor or substantiated. Tomorrow I may weigh the assemblies; since Michelin lists the tire weights (24# F & 25# rear), I can caculate the wheel weight, at least to the closest pound.
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      03-20-2008, 09:57 PM   #6
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Here's a photoshop I did a year ago when the concept first rolled out with SSR GT3's. I agree it's one of the best wheels I've seen on the E46. Not so sure on the E92. Maybe it's just my horrible photoshop!!
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      03-20-2008, 09:58 PM   #7
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Quote:
Originally Posted by Mguy2008 View Post

I decided on the SSR GT3s. in 19 inch.

Last question the SSR GT3 wieght 27lbs. that seems light for 19s. Does anyone know the weights on the oem 19 and 18 inchers
Thanks
I wouldn't really consider them light. As far as light wheels go, those are heavy. As an example, the 19" BBS RS-GT's I had were around 20lbs. and they weren't the lightest available either...


Quote:
Originally Posted by Rea///M3 View Post

... but there's no info...

...any ideas?

they're 19", btw
...Oh, the info is there.

Here's a freebie for a newbie, and my good deed for the day:

First thing you'll need to do is let us know what size your wheel is...

...yeah, I know you're thinkin' "...but hey, I already told you, they're 19"!"

But find out what the width & offset of your wheels are and compare to stock, if you can't do the math by yourself, I hear the Tire Rack linked above has a "wheel & tire size calculator."

Next, read through the sticky of this very wheel forum and you will find the stock specs...(for weights, you'll want to search this forum using google)

Now... DO WORK!
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      03-20-2008, 10:02 PM   #8
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Quote:
Originally Posted by GregW / Oregon View Post
I can caculate the wheel weight, at least to the closest pound.
That would be appreciated.
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      03-20-2008, 10:26 PM   #9
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dude on another thread i just saw some new BBS wheels..if your into that style i say those are the ones to go with
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      03-21-2008, 02:43 PM   #10
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Stock 19" wheels weighed

Quote:
Originally Posted by Epacy View Post
That would be appreciated.
I pulled a front & rear 19 today. Measured the wheel/tire weights on a $900 Swiss digital scale. I weighed them 3 times each. Tire weights are listed on TireRack.com as 24# F & 25#R. Here are some pics; I also photographed the calipers/suspension, which I will post later.

Front: 47.0 - 24 = 23# wheel weight
Rear: 51.5 - 25 = 26.5# wheel weight

I suspect the tire weights are approximate, so I would guess the margin of error for this calculation is +/- 0.5 lb. or so. The difference between front and rear is a little surprising.
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      03-21-2008, 02:51 PM   #11
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Nice Greg! Thanks for verifying this for us.

I'm jealous that you're able to have some fun "working on the car" (last pic)

...can't wait.
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      03-21-2008, 03:18 PM   #12
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Sweet! Thanks Greg.

I don't find those weights to be all that bad. Definately less than the 28-30lbs people were incorrectly tossing around.

You said you find the difference in weights to be suprising even though the rear wheels are wider?

Lovely pictures. Can't wait for the suspension pics.
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      03-21-2008, 03:49 PM   #13
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Quote:
Originally Posted by Epacy View Post
Sweet! Thanks Greg.

I don't find those weights to be all that bad. Definately less than the 28-30lbs people were incorrectly tossing around.

You said you find the difference in weights to be suprising even though the rear wheels are wider?
My RAC wheels are only 1.3# difference F to R. I was expecting maybe 2# difference. Of course, if the tire weights are rounded up and down a bit, that could make difference of a pound.
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      03-21-2008, 03:59 PM   #14
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Quote:
Originally Posted by GregW / Oregon View Post
I pulled a front & rear 19 today. Measured the wheel/tire weights on a $900 Swiss digital scale. I weighed them 3 times each. Tire weights are listed on TireRack.com as 24# F & 25#R. Here are some pics; I also photographed the calipers/suspension, which I will post later.

Front: 47.0 - 24 = 23# wheel weight
Rear: 51.5 - 25 = 26.5# wheel weight

I suspect the tire weights are approximate, so I would guess the margin of error for this calculation is +/- 0.5 lb. or so. The difference between front and rear is a little surprising.
Thanks Greg. Always great to see real data rather than best guess!
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      03-21-2008, 04:27 PM   #15
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I highly doubt that BMW would provide 23 lb wheels...I think that they are heavier. The info on Tire Rack is not always correct as those ugly Breyton GTS wheels were said to weigh 20~ lbs, but weighed 24-25 lbs...so until the tires are weighed independently, I cannot believe the 23/26 lb wheel weight.

No offense to your scale or your car or the time you took to do this or tirerack.com, just being analytical.
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      03-21-2008, 04:56 PM   #16
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Quote:
Originally Posted by GewoW View Post
I highly doubt that BMW would provide 23 lb wheels...I think that they are heavier. The info on Tire Rack is not always correct as those ugly Breyton GTS wheels were said to weigh 20~ lbs, but weighed 24-25 lbs...so until the tires are weighed independently, I cannot believe the 23/26 lb wheel weight.

No offense to your scale or your car or the time you took to do this or tirerack.com, just being analytical.
I understand your skepticism. The tire specs come from Michelin, but may be off a little.
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      03-21-2008, 05:34 PM   #17
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Thanks a bunch for providing the numbers Greg!

Yes, they seem light, but why are people surprised exactly? They thought that BMW was going to ship a $65k car with optional forged wheels that weigh 30lbs? I don't think so. The BBS wheels are 20-22lbs so 23-26lbs for the OEM wheels are totally reasonable.

Now that we know the tires + wheels weigh, we'll just need to be patient until someone weighs the tires alone. I'd say the error margin on the tires might be more like +/- 1 lbs, but not more than that. You'd figure Michelin would know how to weigh its product.
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      03-21-2008, 05:53 PM   #18
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Quote:
Originally Posted by Epacy View Post
I don't find those weights to be all that bad. Definately less than the 28-30lbs people were incorrectly tossing around.
Whoever claimed they were 30lbs should be banned.

The information came from a German "wheel catalogue" feature. Thanks to Greg's efforts we know that information was wrong.


Best regards, south
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      03-21-2008, 05:54 PM   #19
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cool. now we just need someone with 18's to do it.
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      03-21-2008, 05:55 PM   #20
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fronts are lighter than BBS LM's @ 23 lbs. that's like RSGT's league, almost.
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      03-21-2008, 08:27 PM   #21
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Quote:
Originally Posted by lucid View Post
Thanks a bunch for providing the numbers Greg!

Yes, they seem light, but why are people surprised exactly? They thought that BMW was going to ship a $65k car with optional forged wheels that weigh 30lbs? I don't think so. The BBS wheels are 20-22lbs so 23-26lbs for the OEM wheels are totally reasonable.

Now that we know the tires + wheels weigh, we'll just need to be patient until someone weighs the tires alone. I'd say the error margin on the tires might be more like +/- 1 lbs, but not more than that. You'd figure Michelin would know how to weigh its product.
The reason why people suspect a heavier wheel is because BMW will not spend as much time creating a wheel as some wheel companies. Also, more importantly, BMW wants to ENSURE no chance of breakage by thus making them heavier. Also, the wheels have many spokes...and each spoke is not thin, and definitely not hollow either...therefore it would really be hard to believe a 23/26 lb wheel weight. I would say a minimum of 25/27, but that's just me.

Again, no offense to anyone, including BMW...they are a company that wants to minimize costs, and by making the wheels heavier, 99% of buyers would not notice, and, in the process, wheel-related incidents would be minimized.
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      03-21-2008, 08:36 PM   #22
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Quote:
Originally Posted by GewoW View Post
The reason why people suspect a heavier wheel is because BMW will not spend as much time creating a wheel as some wheel companies. Also, more importantly, BMW wants to ENSURE no chance of breakage by thus making them heavier. Also, the wheels have many spokes...and each spoke is not thin, and definitely not hollow either...therefore it would really be hard to believe a 23/26 lb wheel weight. I would say a minimum of 25/27, but that's just me.

Again, no offense to anyone, including BMW...they are a company that wants to minimize costs, and by making the wheels heavier, 99% of buyers would not notice, and, in the process, wheel-related incidents would be minimized.
The 23 - 26 lb weight range is respectable; for a forged wheel these would place style and strength over sheer light weight as priorities. Given the $1,200 surcharge for these, add the base wheel cost (another $1,200?) and given the volumes these must be produced in would potentially make them comparable to a $3k + set. Until we can weigh them bare, I'm not confident of the weight numbers, but they're certainly not in the 28-30# range like many cast wheels of these sizes.
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