BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      03-19-2018, 06:10 AM   #23
Gangplank
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Quote:
Originally Posted by gjm120 View Post
I think all springs are fitted based on the car and it's options (like BMWP springs which have been much discussed). I've seen at least 4 front spring codes on 1 series. My guess is the tolerance on the OE ride height sheets linked above are due to the fact that a car just over the edge D5 is going to sit higher than a car just below D6.

It would contribute to the collective knowledge base if people could also post their spring codes and vehicle options.

For what it's worth, I'm at 588 / 576 front / rear. My strut mounts have only about 7,000 miles so that partially explains the relatively high front end. Also I'm on D6 front and L3 rear springs that I think would have been standard on a 135i with AT. My car is lighter than a 135i spec'd the same so the spring codes explain some of the ride height also.

Also, squatting down next to the car in the garage with a tape measure is not completely accurate.
Interesting. So your 128i does has some squat. The added front height might have something to do with it being a 128i vs 135.

What size rims? (This is why the center of rim to arch is better - b/c then rim size doesn't matter).

So is the entire suspension new w/ 7,000 miles or just the top hat upper mounts?
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      03-19-2018, 10:39 AM   #24
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Quote:
Originally Posted by Gangplank View Post
Interesting. So your 128i does has some squat. The added front height might have something to do with it being a 128i vs 135.

So is the entire suspension new w/ 7,000 miles or just the top hat upper mounts?



One thing I just thought of is that I've also got the Whiteline RSFB inserts. They likely add 1/4 to 1/2 inch rear ride height.


It appears my car sits pretty level. I'll try to get a measurement from around the jack points to the ground later. As pointed out earlier, much of the front to back variance is the wheel well shape. The OE ride heights have 8mm diff front > back while my car has 12mm so I have 4mm more squat or 4mm less rake than OE. (Terminology assumption - rake is tail up, squat is tail down)

If your subframe inserts do add rear height, and you take away the effect of say 3/8" (~10mm) , you are at 578 front, 573 rear. A difference much closer to the spec diff. Then consider how much front strut mounts can compress your car gets into squat territory.

N.B. I have 17" wheels so the absolute numbers will not be a valid comparison to your measurements. So you pointing out the front to back differences is pertinent.

My springs and dampers have ~17,000 miles on them.
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      03-19-2018, 10:51 AM   #25
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BTW, the stock measurements are "higher" in the front because the front wheel well openings are larger, as the front wheel have to turn. It is not actually higher.

More accurate to measure rake at the jack points.

Last edited by MightyMouseTech; 03-19-2018 at 10:57 AM..
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      03-19-2018, 12:41 PM   #26
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Quote:
Originally Posted by MightyMouseTech View Post
BTW, the stock measurements are "higher" in the front because the front wheel well openings are larger, as the front wheel have to turn. It is not actually higher.

More accurate to measure rake at the jack points.
Yeah this is how the entire side conversation about rake started lol
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      03-19-2018, 12:45 PM   #27
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Quote:
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Yeah this is how the entire side conversation about rake started lol
My bad.
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      03-19-2018, 01:17 PM   #28
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Quote:
Originally Posted by MightyMouseTech View Post
BTW, the stock measurements are "higher" in the front because the front wheel well openings are larger, as the front wheel have to turn. It is not actually higher.

More accurate to measure rake at the jack points.
Quote:
Originally Posted by bbnks2 View Post
Yeah this is how the entire side conversation about rake started lol
Quote:
Originally Posted by MightyMouseTech View Post
My bad.

Do you guys measure to the side skirt just in front of the front jack point and just behind the rear? Or to the jack block itself?

I'll see if I can find time to measure it later today. My driveway isn't flat so I have to go for a drive. Oh darn!
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      03-29-2018, 01:03 PM   #29
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So is there anyone else out there that can measure their wheel gap front and rear on a stock 2011+ 135I?
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      06-05-2018, 10:25 PM   #30
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mine is a 128 and convertible non sport. I know you needed a 135 but it's data from another stock e8x so maybe useful.
corroborating other people's results the front has a larger gap.
front 36.5 cm center to arch
rear 36 cm center to arch
like somebody in the forum said: "monster truck"

EDIT: corrected units from inches to cm.
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      06-06-2018, 04:12 AM   #31
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Quote:
Originally Posted by Enoe Ulbeht View Post
mine is a 128 and convertible non sport. I know you needed a 135 but it's data from another stock e8x so maybe useful.
corroborating other people's results the front has a larger gap.
front 36.5" center to arch
rear 36" center to arch
like somebody in the forum said: "monster truck"
Umm... those numbers can't be right - 36" is counter height (kitchen counter). Unless you've turned it into an x5 with monster truck suspension.
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      06-06-2018, 08:34 AM   #32
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I knew I should stick to the metric system. these inches mean nothing to me
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      06-06-2018, 07:46 PM   #33
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Quote:
Originally Posted by Gangplank View Post
Quote:
Originally Posted by Enoe Ulbeht View Post
mine is a 128 and convertible non sport. I know you needed a 135 but it's data from another stock e8x so maybe useful.
corroborating other people's results the front has a larger gap.
front 36.5" center to arch
rear 36" center to arch
like somebody in the forum said: "monster truck"
Umm... those numbers can't be right - 36" is counter height (kitchen counter). Unless you've turned it into an x5 with monster truck suspension.
OK fixed the mistake. I should not be taking measurements when tired. I was reading cm and writing inches. Sorry guys!
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      07-15-2018, 07:22 AM   #34
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I measured my 135i M Sport using the bottom of wheel to bottom of arch.

Mine has 18" wheels and has done 164,000 km (102,000 miles) and I got almost the exact same result as Gangplank.

Front 580 mm
Rear 585 mm

It looks like these cars sag at the front and I reckon mine should be lifted about 10 mm at the front to be right.

I'm getting coilovers fitted next week as all my bump stops are split, smashed or gone. I'll get the experts there to investigate further as I want to keep close to factory ride height.
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      07-15-2018, 08:32 PM   #35
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Quote:
Originally Posted by JBT2 View Post
I measured my 135i M Sport using the bottom of wheel to bottom of arch.

Mine has 18" wheels and has done 164,000 km (102,000 miles) and I got almost the exact same result as Gangplank.

Front 580 mm
Rear 585 mm

It looks like these cars sag at the front and I reckon mine should be lifted about 10 mm at the front to be right.

I'm getting coilovers fitted next week as all my bump stops are split, smashed or gone. I'll get the experts there to investigate further as I want to keep close to factory ride height.
Thanks for posting up the numbers. What suspension are you going with?
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      07-15-2018, 11:16 PM   #36
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Quote:
What suspension are you going with?
MCA - an Ozzie company and in my city. I only hear good things about their products.
I am getting street essentials fitted tomorrow. https://mcasuspension.com/suspension
Comes with front strut camber plates too.
I'll test fly it on the weekend. and get some more measurements next week.
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      07-18-2018, 03:03 PM   #37
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2008 128i Koni Sports and 135 springs. 10,000 miles on new hardware. Center of roundel to front fender 14.5" or about 368 mm.

Either the 135 springs did nothing, or Enoe's car sagged about an inch from the worn out bushing i mentioned in another thread. https://www.1addicts.com/forums/album.php?albumid=15081 https://www.1addicts.com/forums/show....php?t=1436998
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      07-18-2018, 06:36 PM   #38
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Quote:
Either the 135 springs did nothing, or Enoe's car sagged about an inch from the worn out bushing i mentioned in another thread
Was the suspension loosened and then torqued up under load (weight on wheels) after the springs were fitted?

Update on mine:
Just collected the car and drove home in peak traffic so didn't get much of a chance to check it out. However, the ride feels comfy and, on the freeway exit near home that I normally zip around in a "spirited driving" fashion, the car just sat flat and felt superbly planted.

Ride height data on the set-up sheet given to me, shows suggested ride height 322 mm front and rear, measured from wheel centre to fender arch lip. However, although it is certainly sitting higher than that, it does have some rake (nose down attitude). Springs are 200mm 6kg front and 200mm 11kg rear.

I'll take some actual figures and pics after a test drive over the hills on the weekend.

Last edited by JBT2; 07-19-2018 at 06:20 PM..
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      07-20-2018, 02:51 AM   #39
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Pics of my car after installation etc. here:
https://www.1addicts.com/forums/show....php?t=1513893
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      07-20-2018, 03:35 PM   #40
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Quote:
Originally Posted by Tommm View Post

Either the 135 springs did nothing, or Enoe's car sagged about an inch from the worn out bushing i mentioned in another thread. https://www.1addicts.com/forums/album.php?albumid=15081 https://www.1addicts.com/forums/show....php?t=1436998
well, it is an 8 years old car, and perhaps the rubber bushing has sagged. the car has 43K miles on the OEM suspension.
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      01-12-2019, 12:41 PM   #41
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Quote:
Originally Posted by Enoe Ulbeht View Post
well, it is an 8 years old car, and perhaps the rubber bushing has sagged. the car has 43K miles on the OEM suspension.
Isn't the Perfo 18" front ride height value to 592mm a mistake???

The difference between 17" & 18" Radius is one constant value 12mm.

582mm would be the logical correct value, no?

For information on my 125i (same as 128i) with Perfo Springs (Lighter ones) i have mesasured it to 580mm in Front axle.

Thanks
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      01-12-2019, 05:03 PM   #42
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Quote:
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Quote:
Originally Posted by Enoe Ulbeht View Post
well, it is an 8 years old car, and perhaps the rubber bushing has sagged. the car has 43K miles on the OEM suspension.
Isn't the Perfo 18" front ride height value to 592mm a mistake???

The difference between 17" & 18" Radius is one constant value 12mm.

582mm would be the logical correct value, no?

For information on my 125i (same as 128i) with Perfo Springs (Lighter ones) i have mesasured it to 580mm in Front axle.

Thanks
I think you are correct. The Perf suspension is supposed to be 10 mm Lowe than the sport. See the other are all 10mm lower.
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      01-12-2019, 05:09 PM   #43
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Quote:
Originally Posted by Gangplank View Post
I think you are correct. The Perf suspension is supposed to be 10 mm Lowe than the sport. See the other are all 10mm lower.
definitely a mistake. see my earlier post (#18)
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      08-04-2021, 02:49 PM   #44
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Reviving an older thread.

Measured from ground to bottom corner of wheel well behind the front / ahead of the rear wheel, I have 136 mm front and 146 mm rear.

2013 128i originally with M Sports Suspension (S704), now on a full TC Kline adjustable setup; M Sports Package (power sports seats); HK audio; sunroof; and iDrive. Stock wheels and tires.
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