Will these suit my M3?. Opinions please.

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fuzzy
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Sat Sep 29, 2007 11:10 pm

fuzzy wrote:
maxfield wrote:Sprung mass is everything that's supported by the suspension. Unsprung mass is everything connected to the suspension rather than supported by it, I.E brakes wheels etc. That make sense?
yes it does make sense but how would the unsprung mass of the wheel and brakes adversly effect the handling. as long as both sides are the same then its all balanced?
cancel that question as ive just fully read oze30's post winkeye
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Sat Sep 29, 2007 11:12 pm

:cool:
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Sat Sep 29, 2007 11:28 pm

I love those wheels 8)
Handling compromise or not they look great :cool:
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Sun Sep 30, 2007 12:15 am

they are :cool:
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Rich_W
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Sun Sep 30, 2007 7:57 pm

Darylzimm3 wrote:No don't buy them, they look rubbish, don't suit the car, hate them... :?
LOL
gazm3
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Sun Sep 30, 2007 11:11 pm

Some interesting opinions.
Anyway... they are sat on the sofa with me.

The fat boys will look nice on the car!.

The wife just doesn't understand.

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oze30
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Sun Sep 30, 2007 11:12 pm

nice one gazza!
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Mon Oct 01, 2007 12:55 am

i think they look fantastic and really suit the car (hard with a E30)

one thing to note with caliper clearance: sliding calipers get closer to the wheel when they have new pads fitted.
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Jimb
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Mon Oct 01, 2007 2:53 am

Nothing personal in my pinion..eh?
Get the lips polished and i could change my mind.
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Mon Oct 01, 2007 10:03 am

They will match your tail lights if nothing else ! :eek:
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Mon Oct 01, 2007 10:43 am

pacerpete wrote:They will match your tail lights if nothing else ! :eek:
Pete having seen you taste in charriotts and sweaters at the Pod your opinion on style/taste should be ignored :P
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Mon Oct 01, 2007 10:48 am

gazza325cab wrote:Thanks Gents.

Indeed they look class.
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Mon Oct 01, 2007 10:49 am

:eek: Even pete isnt sick enough to put car parts on his sofa!
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Mon Oct 01, 2007 10:49 am

fuzzy wrote:
maxfield wrote:Sprung mass is everything that's supported by the suspension. Unsprung mass is everything connected to the suspension rather than supported by it, I.E brakes wheels etc. That make sense?
yes it does make sense but how would the unsprung mass of the wheel and brakes adversly effect the handling. as long as both sides are the same then its all balanced?
It takes more energy to stop or change direction on a heavier rotational force.
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Mon Oct 01, 2007 10:51 am

Gyroscope anyone?
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Mon Oct 01, 2007 7:52 pm

pacerpete wrote:They will match your tail lights if nothing else ! :eek:
How rude considering the poverty spec, flintstone vehicle at the pod winkeye
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Mon Oct 01, 2007 8:05 pm

Demlotcrew wrote:Gyroscope anyone?
Erm.. What's a gyro scope got to do with anything? Yes, both are rotating same direction and ultimately the same speed, so the gyroscopic effect is negligable.Plus, they are connected by a tie rod to each other, so the chances of both sides pointing in different directions is negligable unless you have some major probs with your steering! Remember, we're talking about unsprung mass. The more weight you have the slower the wheel is to respond.
Gyroscopic effect hasmore to do with a single wheel as it will always try to remain upright (or in whichever start position you rotate it in. (hence motor bikes using the leaning effect to turn as opposed to a steering effect. Look at a slow motion video of a motorbike at speed, turning into a corner. you will notice the front wheel turn against the turn slightly before being forced around by the weight of the bike and geometry of the forks/suspension setup.

Rotational mass and the force required to retard the mass is the point in question. The bigger the mass in respect to wight as well, the more energy is required to retard the rotational force, thus more friction required = more heat. (as Rosco said).

Less rotational mass + weight means less friction, easier on the brakes.

Think trying to stop your bike wheel with your hand vs a car wheel at the same speed and stopping it with your hand. Which one is going to:
a) hurt more
b) be easier to stop and
c) less likely to rip your hand off if you grab the thing?

The bike wheel. Less Mass/weight.
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Tue Oct 02, 2007 1:07 am

ever heard of ackerman angle?

geometry built into the front suspension so the front wheels turn different amounts for a certain amount of lock. obviously the inside wheel has to be turned more as it has to go around a tighter curve than the outside one, therefore you're upseting the 'balanced gyroscope' every time a wheel goes over a bump, or turns even a fraction.

one of the main reasons why cars with heavy wheels and low profile tyres tend to tramline like a bastard and have all sorts of steering feel wierdness going on.

that asside, i quite like the look of the rondels, and was considering getting a set of the 17in versions for my m3. then i realised what a tit i was being and bought some style 5s instead. i can't believe anyone would change from style 5s to rondels :cry: :mad:
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Tue Oct 02, 2007 10:26 am

harry_p wrote:ever heard of ackerman angle?

geometry built into the front suspension so the front wheels turn different amounts for a certain amount of lock. obviously the inside wheel has to be turned more as it has to go around a tighter curve than the outside one, therefore you're upseting the 'balanced gyroscope' every time a wheel goes over a bump, or turns even a fraction.

one of the main reasons why cars with heavy wheels and low profile tyres tend to tramline like a bastard and have all sorts of steering feel wierdness going on.

that asside, i quite like the look of the rondels, and was considering getting a set of the 17in versions for my m3. then i realised what a tit i was being and bought some style 5s instead. i can't believe anyone would change from style 5s to rondels :cry: :mad:
True to an extent, but the ackerman has no effect in a straight line.
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Tue Oct 02, 2007 2:23 pm

gazza325cab wrote:
pacerpete wrote:They will match your tail lights if nothing else ! :eek:
How rude considering the poverty spec, flintstone vehicle at the pod winkeye

Next time i will bring another of my 'woody' jeeps for you peasants to check out ! (i have 3 :D )

I would have brought my 63000 km macau evo 2 to the pod but i didn't want to upset all of you who own 'ordinary' M3's ! :D
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Tue Oct 02, 2007 3:29 pm

oze30 wrote: Hold a 2 litre bottle of milk in your hand and try to shake it up and down as fast as you can. Now try it without the bottle. Which one can you do faster?
I bet someone, somewhere has tried this; Shaken the bottle up & down, & then tried to pour the milk into their hand to shake it up & down without the bottle! Sorry, just amused me... :)
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Tue Oct 02, 2007 3:42 pm

Ziggy wrote:
oze30 wrote: Hold a 2 litre bottle of milk in your hand and try to shake it up and down as fast as you can. Now try it without the bottle. Which one can you do faster?
I bet someone, somewhere has tried this; Shaken the bottle up & down, & then tried to pour the milk into their hand to shake it up & down without the bottle! Sorry, just amused me... :)
I bet someone's manage to infer self-abuse to a passer-by during the second stage of the test.
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Tue Oct 02, 2007 4:53 pm

gazza325cab wrote:Image
the 255s will be OK on the back but you'll want a 225 on the 8.5j.

I had a set on an E34 with 255s on 10s on the back and 225 on 8.5s on the front.

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oze30
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Sun Oct 14, 2007 10:36 pm

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These are 17x8.5 all round.
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Sun Oct 14, 2007 11:20 pm

all this talk of bbs copy rims is making me feel dirty.... I feel the need for a pic of a real bbs wheel again!

http://www.bmwpower.hu/gallery/albums/u ... 06%7E5.jpg
Bollocks to this 24v scrap!
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