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This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 04-15-2013, 05:32 PM   #17981
DavidDee
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Originally Posted by Mango View Post
I've never heard of that in my life. Care to share the reasoning behind your claim?
The wheel is pushed out more. Increasing the distance to the hub. Increased distance is pitting more stress on the wheel bearing. We talked about it in my Statics class. I'll draw something up later if you'd like.

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Old 04-15-2013, 05:34 PM   #17982
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Originally Posted by Mango View Post
I've never heard of that in my life. Care to share the reasoning behind your claim?
The wheel's center of mass will be shifted further away from the bearing. More axial load on the bearing.

That said, there's room for error. Take the rear bearings for example -- 330i, E46 M3, and Z3M all use the same rear bearing. The Z3M runs ET8 wheels, considerably lower than what the 330 and even M3 comes with. So running spacers there isn't really a problem.

In the front there aren't as many stark differences, but I imagine the bearings are durable enough to tolerate some variations
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Old 04-15-2013, 05:37 PM   #17983
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Thank you for explaining more. I'm in class now and couldn't fully explain. Like I said. There isn't going to be a big difference in wheel bearing wear but there will be a difference. Nothing to really worry about though. I have 20mm spacers with my style 45's. Cheap way to add some pop to your wheel setup

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Old 04-15-2013, 05:39 PM   #17984
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the force is transferred to the threads of the wheel bolts, so no. The wheel bearing itself sees no difference. Think about it this way: take the forces to the extreme. If anything, you'd strip the bolts out starting at the bottom where the force is greater. But obviously that's not an issue.

Last edited by Schlag96; 04-15-2013 at 05:40 PM.
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Old 04-15-2013, 05:48 PM   #17985
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the force is transferred to the threads of the wheel bolts, so no. The wheel bearing itself sees no difference. Think about it this way: take the forces to the extreme. If anything, you'd strip the bolts out starting at the bottom where the force is greater. But obviously that's not an issue.
Imagine a 3 foot spacer -- that will exert more axial load on the bearing. Of course the lugs receive more load too.

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Old 04-15-2013, 05:58 PM   #17986
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Originally Posted by TerraPhantm View Post
Imagine a 3 foot spacer -- that will exert more axial load on the bearing. Of course the lugs receive more load too.
Only one way to figure out for sure.

I'm ordering some 3 foot spacers!!!!

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Old 04-15-2013, 09:15 PM   #17987
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Jeez sorry lol. Sway bar links?
^^^^^^ This ^^^^^^/LOL. I bought everything Meyle HD from this place: http://www.oembimmerparts.com/BMW_E4...rts_s/1966.htm

From the minute i slid the jack under the car until the last lug nut went in, it took me 2 hours to do control arms, bushings,and end links
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Old 04-15-2013, 10:00 PM   #17988
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Old 04-15-2013, 10:56 PM   #17989
WDE46
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Originally Posted by DavidDee View Post
Increased wheel bearing wear. Won't be a huge difference in wear but they will wear faster

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Quote:
Originally Posted by Mango View Post
I've never heard of that in my life. Care to share the reasoning behind your claim?
Quote:
Originally Posted by DavidDee View Post
The wheel is pushed out more. Increasing the distance to the hub. Increased distance is pitting more stress on the wheel bearing. We talked about it in my Statics class. I'll draw something up later if you'd like.

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Quote:
Originally Posted by TerraPhantm View Post
The wheel's center of mass will be shifted further away from the bearing. More axial load on the bearing.

That said, there's room for error. Take the rear bearings for example -- 330i, E46 M3, and Z3M all use the same rear bearing. The Z3M runs ET8 wheels, considerably lower than what the 330 and even M3 comes with. So running spacers there isn't really a problem.

In the front there aren't as many stark differences, but I imagine the bearings are durable enough to tolerate some variations
Quote:
Originally Posted by Schlag96 View Post
Only one way to figure out for sure.

I'm ordering some 3 foot spacers!!!!

Hey guys: DavidDee is right, though the increased wear will be practically negligible. In his example of "3 foot spacers" he's just listing an extreme case to prove a principle. It will apply a larger moment (torque) to the wheel bearing. This is an undeniable fact.

Schlag, you are right and wrong in the same sentence. The forces are transferred through the bolt threads, but they are then transmitted to the hub face and then to the bearing itself. Forces don't just stop existing. They have to be transferred all the way through.

Basically spacers increase the twisting force that the wheel applies to the bearing, but it is a very small increase, so it's likely not to make a real difference.
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Old 04-15-2013, 11:17 PM   #17990
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Just got my f30 mats earlier today and I put them in I believe it's a great fit they seem too be a tad bit wider but makes the mats more snug and secure! Even though the rears don't have the Velcro locking system as the two front mats their big enough that they probably won't move. I love these mats lol
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Old 04-16-2013, 12:03 AM   #17991
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i had a feeling that was the argument to be played. im sorry but thats retarded. in theory, i could see it being correct, but so is the theory that if you wiggle your ass slightly in a turn every turn for your cars lifetime, you'll wear the bearing out 5 miles sooner over 150k miles. or when you change tires to a wider size, or use the same bearing in a bmw with a different offset wheel... or when driving a zhp with a wider/heavier wheel. its negligible at best and only brought up for the sake of argument. quite simply, it's meaningless. climate or your favorite route to work would have far greater (if any) impact on the life of a bearing than a 15mm spacer ever would. some bearings last 50k and some 200k. it's not worth mentioning at all as a "downside"

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Old 04-16-2013, 12:05 AM   #17992
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Originally Posted by THECLEANERBEAMER View Post
Just got my f30 mats earlier today and I put them in I believe it's a great fit they seem too be a tad bit wider but makes the mats more snug and secure! Even though the rears don't have the Velcro locking system as the two front mats their big enough that they probably won't move. I love these mats lol
Not bad, though I think they'd look a lot better with a black interior, or at least one of the two tone colors (nat brown, tannin red, cinnamon, imola... Some others available outside of the US)
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Old 04-16-2013, 12:05 AM   #17993
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Originally Posted by THECLEANERBEAMER View Post
Just got my f30 mats earlier today and I put them in I believe it's a great fit they seem too be a tad bit wider but makes the mats more snug and secure! Even though the rears don't have the Velcro locking system as the two front mats their big enough that they probably won't move. I love these mats lol
i think those mats would look better in a black interior so you don't notice the gaps

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Old 04-16-2013, 07:48 AM   #17994
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Ehh I think their alright it's got tan piping around edge on all the mats so would look weird with black interior, and you would be able to see the gaps on black interior anyways
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Old 04-16-2013, 08:20 AM   #17995
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Old 04-16-2013, 08:43 AM   #17996
WDE46
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i had a feeling that was the argument to be played. im sorry but thats retarded. in theory, i could see it being correct, but so is the theory that if you wiggle your ass slightly in a turn every turn for your cars lifetime, you'll wear the bearing out 5 miles sooner over 150k miles. or when you change tires to a wider size, or use the same bearing in a bmw with a different offset wheel... or when driving a zhp with a wider/heavier wheel. its negligible at best and only brought up for the sake of argument. quite simply, it's meaningless. climate or your favorite route to work would have far greater (if any) impact on the life of a bearing than a 15mm spacer ever would. some bearings last 50k and some 200k. it's not worth mentioning at all as a "downside"

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I agree Mango. He was just technically correct: the best kind of correct.
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Old 04-16-2013, 09:29 AM   #17997
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I agree Mango. He was just technically correct: the best kind of correct.
I never said he wasn't correct
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Old 04-16-2013, 09:29 AM   #17998
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And in other news: clay-barring your car destroys your paint
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Old 04-16-2013, 09:44 AM   #17999
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And in other news: clay-barring your car destroys your paint
it does?
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Old 04-16-2013, 09:47 AM   #18000
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And in other news: clay-barring your car destroys your paint
Thanks. Now I don't feel guilty for not doing it.
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