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  #11  
Old 08-24-2012, 01:39 PM
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Quote:
Originally Posted by mihalkog View Post
brian5,

while I understand your experience, I did not order anything from H&R.
I've never said you did. The link that you provided said the adapters are for 5-series. If they are, you will most likely have the same bolt issue...
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  #12  
Old 09-16-2012, 10:23 PM
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H&R makes a set that will specifically fit the e70. The bolt size on the e70 seems to be 14x1.25. That would not be the same as on the e53 unfortunately which has 14x1.5 bolts. Not sure why they had to make it so difficult.....

When I come across the part number I'll post it here.

Edit: 3075740725 is 15 mm with thru bolts
4075740725 is the 20 mm version that bolts to the hub first?

Check on H&R Special Springs, LP under the applications tab. If you enter your car (e70) it will list the adapters.
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Last edited by TriX5; 09-16-2012 at 10:35 PM.
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  #13  
Old 09-17-2012, 01:13 PM
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UPDATE

I tried to install the adapters from Motorsports Hardware and had to discover that they were not 74.1mm to 72.56mm adapters, but instead 72.56mm to 74.1mm. So exactly the opposite of what I needed to install smaller 72.56mm hub wheels on the larger 74.1mm hubs found on the E70.
So I had my wheels machined to the larger diameter. I obtained three bids amounting to $280, $200 and $100 for all four wheels. I went with the $100 bid by a Reno machine shop using CNC machine tools. There are a number of videos on Youtube showing do-it-yourself methods using a router, but since I could not find an exact router bit for this application I decided to let a pro do it.
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  #14  
Old 09-23-2012, 09:11 PM
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Had the same experience: could not find 74.1mm to 72.56mm adapters so I had a local machine shop bore out the centers. Cost was $30 per wheel.

It's really best to have this done by a reputable machine shop because the center bore in the wheel serves to center the wheel on the hub ... the bolts are used to secure the wheel to the hub. For this reason it's a good idea to have the cut tolerance to the second decimal (one hundredth of a mm, or 4 thousandth of an inch). This cannot be accomplished accurately with a hand held device such as a dremmel tool.
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