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  #21  
Old 07-15-2015, 05:48 PM
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Hi Guys,

Thought I'd update this very old thread. As of today, the issue has been resolved.

Short version:
ECS sends 15mm spacers and bolts = Shimmy
ECS sends 12.5mm spacers and bolts = Shimmy
ECS stops corresponding with me.

I order 19mm extended head bolts with floating conical seat from a forum member. Reinstall 12.5mm spacers, still has a shimmy.

At this point I gave up and ran without spacers. The only time I rub is when I am on full turning lock. Other than that I am fine without spacers.

A couple weeks ago I finally decided to try this again. Ordered a set of H&R 12mm spacers and used the 19mm bolts from this board.

BAM!! Issue solved. No more shimmy with the H&R spacers.

The thickness in the part of the spacer that goes inside the wheel is considerably thicker on the H&R than the ECS. I'm guessing my larger tires are too heavy for the ECS.

See below. Black is ECS and silver is H&R.
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  #22  
Old 07-15-2015, 06:00 PM
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E28jay nice detail catch. I have a set of ECS spacers that are 17.5 mm. I have not installed them yet on the front of the X5 and as a result of your findings I am going to send those spaces back. Last thing I want is a shimmy on this vehicle.
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  #23  
Old 07-15-2015, 08:37 PM
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I've been saying in a few threads lately I wouldn't trust much other spacers than H&R
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  #24  
Old 07-16-2015, 12:26 AM
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Good read. I may need a spacer next wheel/tire upgrade thanks to the guys that do the "beta testing"


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  #25  
Old 02-13-2020, 07:06 PM
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Let's bring this topic back up for discussion. I recently added the 4.8iS front flares to my X and wanted the look of kicking the front wheels out just a little to align with the flares like I did with the H&R DRA 25mm spacers in the rear.

I decided on H&R hubcentric 15mm spacers and the look is probably the best from all my research and reading but DRA is not an option on sizes less than 25mm. Only the DR series is available to be used with extended 45mm 14x1.5 60 degree conical bolts. Here is where I get sideways.

The only 45mm thread M14x1.5 60 degree bolts I could find with these specifications were 17mm hex instead of the 19mm. The cone fits the wheel but is noticeably smaller.

I went ahead and installed the spacers and torqued the wheels to 100 ft/lbs and took it up on the freeway and sure enough, a shimmy in the steering wheel at 65-68 mph. (good above 70 mph and below 60 mph) Brought it back and removed the spacers, went back to 19mm hex bolts with floating cones and drives perfect again.

IMHO the problem does not come from the H&R spacer vs. the ECS spacer, the problem is in the bolts. The OP solved his shimmy with the larger bolts.
Does anyone know where to get the larger 19mm hex head M14x1.5 bolts in a 45mm thread preferably with the factory style wobble cones?

Picture description:

1. Factory spacing with style 87 and 4.8iS flare
2. 15mm spacing with style 87 and 4.8iS flare
3. Factory 19mm hex M14x1.5 lug comparing cones to 45mm 17mm hex M14x1.5
4. 45mm 17mm hex M14x1.5 compared to H&R 45mm 17mm hex M12x1.5
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Last edited by Overboost; 02-14-2020 at 10:44 AM.
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  #26  
Old 02-13-2020, 07:58 PM
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So what I'm seeing is the stock bolts have captive come that allows the bolt to turn. This will definitely affect the clamping force with torque.

To get the same clamp force I recommend doing this: pre torque to 90 ftlb stock bolt then measure the additional angle to get to 100 ftlb.

Now put in the 17mm cone bolts and reproduce the 90 ftlb plus angle and see how much torque that is.

Odds are more likely the off balance is a minor shift in the spacer than anything to do with the bolts themselves.

Did you torque in the air or on the ground? I would def torque in the air. If you can determine which side is shaking, remove the wheel and turn 72 or 144 and try again you may achieve a good balance by just moving to the next lug.
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  #27  
Old 02-13-2020, 08:09 PM
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Quote:
Originally Posted by andrewwynn View Post
So what I'm seeing is the stock bolts have captive come that allows the bolt to turn. This will definitely affect the clamping force with torque.

To get the same clamp force I recommend doing this: pre torque to 90 ftlb stock bolt then measure the additional angle to get to 100 ftlb.

Now put in the 17mm cone bolts and reproduce the 90 ftlb plus angle and see how much torque that is.

Odds are more likely the off balance is a minor shift in the spacer than anything to do with the bolts themselves.

Did you torque in the air or on the ground? I would def torque in the air. If you can determine which side is shaking, remove the wheel and turn 72 or 144 and try again you may achieve a good balance by just moving to the next lug.
Snugged at maybe 10 ft/lbs in the air and final torque of 100 ft/lbs on the ground. There has to be a reason BMW gave us the larger floating cones

OP found those 45mm bolts with floating cones from someone on here a few years back so they must exist.

The H&R hubcentric spacers fit perfectly on the front hubs so I don't know how they could have any movement. I don't want to have to play with the variable angle wheel installation, something just isn't right.

Last edited by Overboost; 02-13-2020 at 09:50 PM.
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  #28  
Old 02-14-2020, 12:38 AM
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I have a 3.0 and my stock bolts are 17mm. Not sure why you would have 19mm. My wife's X also had 17mm bolts. Did someone maybe change the 17mm for 19mm before you bought it? I've had the wobble problem you describe before, but it was bad control arm bushings causing it.
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  #29  
Old 02-14-2020, 01:19 AM
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Issue with ECS Spacers. Anyone else? FIXED

Mine and wife's both have 19mm lug heads.

OB snug them more before putting on the ground. 1200/1600# with that extra 15mm is a lot of shear force you may be adding 0.01 " or something by putting the weight on the wheels before torquing.

I always torque stick in the air then use torque adapter on the ground.

I don't think the larger is the issue it's the floating. You could put a bit of lube on the cone but I wouldn't recommend it I've read bad things about lube on lugs.

So: back to my recommendation: figure out the correct torque. Determine the torque to angle that 100 ftlb gets you with the regular bolts and then use pretention maybe 70-80 ftlb and measure the angle it takes to get to 100. Do the same pretension and angle and see what torque that ends up and use It.

Advised dry torque is 150 ftlb or 112 lubricated so you are not likely to damage the bolt say If the proper clamp force ends up being with 115-120 ftlb dry.
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Last edited by andrewwynn; 02-14-2020 at 01:25 AM.
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  #30  
Old 02-14-2020, 02:27 AM
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After scouring the internet for hours, I may have found the unicorn lug bolts. Turns out H&R makes them but only available in Europe. Most US sellers want about $25 each for these but fleaBay UK comes through at 4.17 each and 15.99 for international shipping.

H&R 1454808
Silver Cone Seat Lug Bolt by H&R. Thread Size: M14 x 1.5. Hex Size: 19 mm. Thread Length: 48 mm. Seat Angle: 60 deg.
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