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2Addicts | BMW 2-Series forum Technical Topics Wheels and Tires -- Sponsored by The Tire Rack Wheels need to be shaved a bit - anyone done this?

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      01-01-2018, 11:49 AM   #23
aerobod
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If the manufacturer allows it, this is a common procedure on forged wheels. There are only a limited number of dies used to stamp the wheel, so offset is adjusted by machining the hub area. If the stock wheel bolts protrude less than with a BMW wheel, there well may be a lot of material that can be removed without issue. 10mm from the hardened bolt seat insert to the back of the wheel is a lot, as the minimum thickness is 10mm or so less than where the cone seat outer edge bottoms. Really is dependent on the wheel manufacturers advice.
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      01-02-2018, 11:27 AM   #24
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But don't those manufacturers also offer to do the machining themselves? And likely on some very specialized tooling, given the need for such exacting tolerances? The OP is asking about going out and finding a local machine shop to cut some metal off the back of his wheels, so it looks like he is not working with one of these companies that designed their wheels for hub-machining. Far more likely to get yourself into trouble this way, and I'd still strongly suggest that you skip this.
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      01-02-2018, 11:54 AM   #25
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Agreed, this isn't something that you can just take anywhere and get done easily. It's not a good idea to mess with wheels this way unless you go to a reputable shop that does this on a daily basis.
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      01-03-2018, 05:39 PM   #26
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Quote:
Originally Posted by Maynard View Post
But don't those manufacturers also offer to do the machining themselves? And likely on some very specialized tooling, given the need for such exacting tolerances? The OP is asking about going out and finding a local machine shop to cut some metal off the back of his wheels, so it looks like he is not working with one of these companies that designed their wheels for hub-machining. Far more likely to get yourself into trouble this way, and I'd still strongly suggest that you skip this.
I had them shaved by 4mm from a reputable wheel machine repair shop that machines wheels daily. They checked the tolerances and everything checked out for 4mm to be shaved. Offset is way more bang on now. They just finished shaving a set of wheels for a Porsche owner right before mine and said they shave forged wheels for clients all the time, very common.
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      01-03-2018, 05:44 PM   #27
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Can I see what the back of the hub looks like?
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      01-04-2018, 07:25 PM   #28
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Quote:
Originally Posted by cxp213 View Post
Can I see what the back of the hub looks like?
4mm shaved off back of hub, 255/35/18 PSS on 18x9 wheels
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      11-28-2019, 03:20 PM   #29
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Just wonder lf i can do the same "reduce" (increase) offset with a pair of VMR wheels that I have.

Go from 33->40
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