Machining alloys to change offset?

[V8 Supercharger]

Hello all

Have had a new set of wheels for about 6 months now and i was taking a bit of a risk with them as i thought the offset might be too low.

Standard wheels are near ET45, these are ET35 so sit 10mm further out.

Sure enough, on a regular basis this causes me rubbing issues.

I want to get about 5-8mm off the rear wheels hub shaved off from the back so they sit abit further in. They have plenty of metal so no safety issues, just wanting to know if theres someone around the Leeds/Bradford area who can do this?

Is there anyone on here who has done this by the way?

 

[hotrodder]

http://www.mbclub.co.uk/forums/whee...mg-monoblock-offset-size-change-possible.html

 

[V8 Supercharger]

http://www.mbclub.co.uk/forums/whee...mg-monoblock-offset-size-change-possible.html

Thanks for the link, though nobody mentions any specific company in there.

I figure you yourself, or the company you work for, can do this.

Not too sure where abouts in the south east you are, but depending on what i can find up here and your ability to do this sort of thing it may be worth a trip to you.

As a rough estimate, how much would i be looking at per wheel? And how long does it usually take?

Thanks

 

[hotrodder]

Sorry, was thinking SavMan might have been able to put you touch with the company he used but didn't notice his location at the time!

I'm more of a fabricator and welder than machinist and even if my lathe had enough swing* I doubt i'd be happy to remove even 5mm and i doubt any of the machinists i know/use would be happy to take more than a light skim either.
Obviously wheels differ in design and the amount of material under the bolt seat so this may not apply but very generally do the ET35 wheels fit with the standard wheel bolts or do they require longer ones? If the former it's fair bet to say that there's not enough material to safely remove much without risking the bolt seat cracking in the future. Having said that there's sometimes there's a little 'free' material that can be removed as the bolt holes can be slightly recessed on the back of the wheel like in this random pic nicked from the internet

Another thing to check is the centre register... sometimes it's only a narrow ring with the majority of the centre bore having a larger dia i.e. skim the back of the wheel and you remove it. That at least is an easy one to fix by machining some press fit rings to make new centre registers although it obviously effects the time and price for the job

* it won't, 6.5" centre height & while it'll swing 18" with the gap bed removed there's not enough width in the gap for a typical car wheel