I got a whole new car for < US$ 5 000
09-26-2005, 11:40 PM
#41
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Originally Posted by das' date='Sep 27 2005, 03:15 AM
[quote name='BMW#5' date='Sep 26 2005, 03:02 PM']Ok so Style 135
18 x 8: 8" wide, ET 20mm (0.79" offset) = 4" (wheel centerline) + 0.79" offset = 4.79" distance from hub,
and
172 wheel, 19 x 9.5: 9.5" wide, ET 32mm (1.26" offset) = 4.75" (wheel centerline) + 1.26" offset = 6.01" distance from hub
Which gives:
6.01" - 4.79" = 1.22" or 30mm more offset from hub on 172 rear wheels vs 135 rear wheels.
I could beleive a 15mm difference, but 30mm is just not possible. Could we be neglecting a factor of 2 somewhere in the calculation?
18 x 8: 8" wide, ET 20mm (0.79" offset) = 4" (wheel centerline) + 0.79" offset = 4.79" distance from hub,
and
172 wheel, 19 x 9.5: 9.5" wide, ET 32mm (1.26" offset) = 4.75" (wheel centerline) + 1.26" offset = 6.01" distance from hub
Which gives:
6.01" - 4.79" = 1.22" or 30mm more offset from hub on 172 rear wheels vs 135 rear wheels.
I could beleive a 15mm difference, but 30mm is just not possible. Could we be neglecting a factor of 2 somewhere in the calculation?
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Let's take a look at this diagram again:
I have been adding A + C to get B, the rim's "backspace", and those calculations are indeed correct. But what we are looking for is the distance from the wheel's bolt face to out outer edge of the rim, in other words, not A + C, but A - C (or, 2A -
. So let's try this again:Style 135
18 x 8: 8" wide, ET 20mm (0.79" offset) = 4" (wheel centerline) - 0.79" offset = 3.21" distance from hub
Style 172
19 x 9.5: 9.5" wide, ET 32mm (1.26" offset) = 4.75" (wheel centerline) - 1.26" offset = 3.49" distance from hub
Which gives:
3.49" - 3.21" = 0.28", or 7mm more offset from hub on 172 rear wheels vs 135 rear wheels.
Now let's do the fronts:
Style 135
18 x 8: 8" wide, ET 20mm (0.79" offset) = 4" (wheel centerline) - 0.79" offset = 3.21" distance from hub
Style 172
19 x 8.5": 8.5" wide, ET 18mm (0.71" offset) = 4.25" (wheel centerline) - 0.71" offset = 3.54" distance from hub
Which gives:
3.54" - 3.21" = 0.33", or 8.4mm more offset from hub on 172 front wheels vs 135 front wheels.
Does that look better?
------
Soooo...width still comes into play, but I was just figuring the wrong dimension!
For what it's worth, this also means that the Style 172 wheel is inset an additional 4mm than the Style 166 wheel on the rear, and 6mm on the front. And that answers my worries about the Style 166 sticking out too much on the xi; the Style 172 seems like it will work just fine:
Style 123 (for reference)
4" - 0.787" offset = 3.213"
Style 172
Front: 4.25" - 0.709" offset = 3.541" - 3.213" = 0.328" (+8.33mm)
Rear: 4.75" - 1.260" offset = 3.490" - 3.213" = 0.277" (+7.04mm)
Style 166
Front: 4.25" - 0.472" offset = 3.778" - 3.213" = 0.565" (+14.35mm)
Rear: 4.75" - 1.102" offset = 3.648" - 3.213" = 0.435" (+11.05mm)
Based on that information, I feel comfortable ordering the Style 172 for my own car.
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[/quote]That's spot on Dave.
Sorry but I only saw your diagram above this morning. Was reading on my phone yesterday, and kept image download off
Now anyone interested in trading some 10mm spacers for my 15mm spacers??
I think that the 172's + 15mm are just slightly too much. The set up on my 135's + 15mm was perfect, so I really need to add an 8mm spacer, but I don't think that size is available.
09-26-2005, 11:42 PM
#42
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Originally Posted by shiny' date='Sep 27 2005, 09:33 AM
Man, I love those wheels. They are now on my wishlist, they look absolutely brilliant, better even than the M5 wheels.
However, Mrs Shiny hates you, as she's not getting a new kitchen now?
However, Mrs Shiny hates you, as she's not getting a new kitchen now?
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09-27-2005, 10:28 AM
#43
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Originally Posted by stu' date='Sep 26 2005, 06:33 PM
Thanks for the update on the Michelins. My 124's (current Dunlop DSST run flats) need new tyres, COSTCO only stock Michelin and I was unsure about buying them.
The rears are over 260GBP each, it's a big expense. I want to make the right choice.
The rears are over 260GBP each, it's a big expense. I want to make the right choice.
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I say get the PS2's.
They are MUCH more comfortable than the Dunlops.
Check out www.tirerack.com, which is where I got mine. They have some useful comparison tools and reviews & tests.
.
09-28-2005, 12:49 PM
#44
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My Ride: E60 2005 535d Sport, Carbon Black, 19" M-light Double Spoke 172 8J Alloys, Media Package, Bi-Xenons, Heated seats, Black Dakota leather, Sun protection glass.
I have the same wheels on my 535d Sport which incidentally, is the same colour as yours, picked it up last week. Your pics look great. Enjoy.
regards
Grafiker
regards
Grafiker
10-02-2006, 06:39 PM
#46
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My Ride: 2006 523i M Sport Package white
2002 996 C2 silver
1997 993 C2s red
Originally Posted by BMW#5' post='175023' date='Sep 26 2005, 01:48 AM
Well I am finally free from my Runflats
I got my Style M 172 BMW wheels mounted on Friday with Michelin Pilot Sport 2 tyres, and the difference is amazing
It is like driving a brand new and different car all together
Despite being an even lower profile than I had before with the M 135 Rims, the ride is much smoother. I no longer feel all those tiny road imperfections and bumps to the same degree. Obviously you still feel them to a degree, but at least it is now like a damped or gentle feeling, rather than a harsh jolt.
Here are some pics (please excuse the poor lighting):
Note: I still have the same 15mm H&R Spacers on the rear.
I got my Style M 172 BMW wheels mounted on Friday with Michelin Pilot Sport 2 tyres, and the difference is amazing
It is like driving a brand new and different car all together
Despite being an even lower profile than I had before with the M 135 Rims, the ride is much smoother. I no longer feel all those tiny road imperfections and bumps to the same degree. Obviously you still feel them to a degree, but at least it is now like a damped or gentle feeling, rather than a harsh jolt.
Here are some pics (please excuse the poor lighting):
Note: I still have the same 15mm H&R Spacers on the rear.
You car sure looks awesome!!!
I am about to get rid of the 135 on my 523iM and replace it with 172...may I ask what is the use of the 15mm H&R Spacers?
Thank you for the feedback
10-03-2006, 03:58 PM
#47
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Nice....Love the wheels....I think I'll get the same!!! Oh....wait......I HAVE the same !!! 
M-Pack....Carbon black and 172 rims..........That's the right combo!!!! lol
Looks like we have the same taste!
M-Pack....Carbon black and 172 rims..........That's the right combo!!!! lol
Looks like we have the same taste!
10-04-2006, 12:07 AM
#48
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My Ride: 2006 523i M Sport Package white
2002 996 C2 silver
1997 993 C2s red
Originally Posted by nwilliams' post='341395' date='Oct 3 2006, 06:58 PM
Nice....Love the wheels....I think I'll get the same!!! Oh....wait......I HAVE the same !!!
M-Pack....Carbon black and 172 rims..........That's the right combo!!!! lol
Looks like we have the same taste!
M-Pack....Carbon black and 172 rims..........That's the right combo!!!! lol
Looks like we have the same taste!
will post the spec in ALPINE WHITE after 172 installed!!!
BIMMER RULZ
