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Increasing wheel offset by shaving inside of rim?

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Old Oct 29, 2002 | 02:41 PM
  #1  
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Default Increasing wheel offset by shaving inside of rim?

I have a set of 15" sparco rims with the offset of about 35-38mm. With yoko 032R 205-50-15, the fronts are fine but stick out a bit. The rears rub the inner fender like crazy. Could I safely shave 2-4mm off the inside of the rims so they will tuck in better? Will this decrease the strength of the wheel significantly?

I have a 1998 gsr with h&r sports, no camber kit.
thanks.
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Old Oct 29, 2002 | 04:07 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

The wheel is NOT something you want to shave.

You effect the structural integrety of the metal by removing material let alone the heating caused by the removing.

Sell the rims and get something else.
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Old Oct 29, 2002 | 09:15 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (Spade)

I ddi that to my Enkei Shogun's....

if not would rub badly.. worked fine... special lath required.
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Old Oct 29, 2002 | 10:00 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (Spade)

The wheel is NOT something you want to shave.

You effect the structural integrety of the metal by removing material let alone the heating caused by the removing.

Sell the rims and get something else.
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Old Oct 31, 2002 | 10:53 AM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

hmm different opinions here. any more feedback?
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Old Oct 31, 2002 | 11:50 AM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

NOOOOOOOOO!!!!!
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Old Oct 31, 2002 | 12:01 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (Spade)

Heat??? Only if your using a torch!!

I've milled the inside of my rims and had no problems. The heat from skimming them with a mill is less than what the drums would generate and transfer.

In regards to strength that would depend on the rim. My rims were a RWD offset (+18) so I had to get them back to a more FWD freindly offset. They haad a raised section that I milled off.

SEEK PROFESSIONAL ADVICE. This advice could only be given after viewing said rims.
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Old Oct 31, 2002 | 12:01 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

i wouldn't recommend doing that unless manufacturer says its o.k. Contact manufacturer and ask if that offset could work for that wheel (find out what can/can not be done). If they haven't tested that offset, it might not be a good idea.
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Old Oct 31, 2002 | 12:01 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (vtec.dc2)

i'd recommend getting another set of wheels
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Old Oct 31, 2002 | 12:03 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

I'm in the same boat. I bought a set of used Kosei K-1s that need to be milled down 4-5mm to avoid rubbing at autoX on my car. Taking off 2-4mm should be fine for most wheel designs. The main issue is if the material behind the lug nut seat is thick enough to still be structurally sound after some of that material is removed. I am having my K-1s done this winter by a local wheel repair shop.

Andrew
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Old Oct 31, 2002 | 02:47 PM
  #11  
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

Ill bring them in to a rim repair/refinishing shop.
Or get another set of stock 15 x 6 rims. Let the yoko 032Rs bulge a bit.
Thanks for the replies.
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Old Oct 31, 2002 | 03:50 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

I think it would be safer to do some trimming inside of the fender well over shaving the actual wheel. Even easier would be to buy rims that fit and sell those puppies to someone else.
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Old Oct 31, 2002 | 05:26 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (b00stn)

I was wondering this myself! I'd like to shave a few mm's off these 16's I have. Not much. I have access to a vertical mill. Ohh, the dilemma!

P.S. if anyone wants to buy some 16's for really cheap, I'll sell them.
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Old Oct 31, 2002 | 08:01 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

i did it too back in the day, no prolbmes at all.
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Old Oct 31, 2002 | 08:27 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (hondaatwsu)

i did it too back in the day, no prolbmes at all.
How much did you shave, and how much does your car weigh?
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Old Oct 31, 2002 | 09:45 PM
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Default Re: Increasing wheel offset by shaving inside of rim? (LudemanDan)

the question you have to ask is: "is my car worth totaling b/k of a broken rim that splintered at 110mph while taking a long sweeper?"

murphy's law always comes and bites your *** in the worst possible way...
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Old Oct 31, 2002 | 10:06 PM
  #17  
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Default Re: Increasing wheel offset by shaving inside of rim? (RotaryBzzz)

I had a set of smiths 'infinities' shaved down approx 4mm a few years ago, from 35 to 39mm,(just the rears) theres a machine shop near me that done it, the lathe thingy they used also sprayed water onto the milling part as the wheel turned so there was no heat generated. I had those rims on for another 2 years and they never gave any bother, and i checked them every so often just to be sure.
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Old Nov 1, 2002 | 10:33 AM
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Default Re: Increasing wheel offset by shaving inside of rim? (mugenracer)

According to the guys who do my wheel work (polishing, machining, etc.) it's okay to mill the inside of the wheel, but to a certain extent depending on the manufacturing of the wheel.

I've personally done it with some 17" MM spiders and the process worked great. btw, I took them down about 8mm.
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Old Nov 1, 2002 | 10:42 AM
  #19  
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Default Re: Increasing wheel offset by shaving inside of rim? (hypa)

Can't say I recommend doing it, but if you must, have a machine shop do it, not some "wheel repair shop". A guy who's got the know how and tooling to deck a cylinder head, something with much closer tolerances than a wheel, will know how to do this job properly. Most "wheel repair places" I've dealt with have some pretty questionable practices and turn out some pretty shoddy (aka dangerous) work.
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Old Nov 2, 2002 | 08:32 AM
  #20  
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Default Re: Increasing wheel offset by shaving inside of rim? (94CivicSi)

depending on the design and structural integrety of the wheel you could remove as much as possible until you start removing to much matterial to mount your lug nuts .. my enkeis had special deep socket nutes so i could remove enough material... and also watch out for the spot for the brake caliper .. that`s also a no no..
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Old Oct 10, 2004 | 10:33 PM
  #21  
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From: THE DUB C, oHIo, usa
Default Re: Increasing wheel offset by shaving inside of rim? (midniteracing)

id like to hear some more input on this one. im thinking about doing this also with my 16x7 slipstreams, they have a 40 mm offset. i was thinking about cutting them down 2-3 mm so i can throw a camber kit on the car without rubbing the fenders
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Old Oct 11, 2004 | 01:41 AM
  #22  
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Default Re: Increasing wheel offset by shaving inside of rim? (hybridb18)

ahhhhhhhhhh
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