Reducing offset without changing lip size.

[iBmxgeo]

I drive a mk6 gti. If this is in the wrong section let me know. Usually stay in the classifieds.

There is a high possibility I will be trading wheels this weekend however I have some concern with how aggresive these wheels are.

They are autostrada ferrari modena wheels
The specs are
17x9.5 et 15. 205/45
17x10.5 et 15. 225/40

I had a set of rs with the specs
17x9 et33. 215/40
17x10.25 et30. 235/40

I have my rear fenders pulled quite a bit and I sat in the lips of the rs' s in the rear (-2.5 degrees of camber) and they tucked in the front
Is it possible to shave the mounting surface of the new wheels down. Ive looked it up and I cant find any information besides "depends on The wheel" the seller clames that I can shave them down 8mm. Effectively making them et23. Is it also possible to shave down the rotor mounting surface a few mm? That would make the wheels sit at about et26. Which with more camber I should be able to make fit.

Thanks for any advice.

Edit:
Also does anyone know a ratio from camber to offset. Sorry if its a stupid question or doesnt make sense but ill try to explain it.
For example if at 0 degrees you are et 40. If you changed it to -.5 degrees how many mm would that pull in the wheel at the top of the lip on a 17" wheel?


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[scweet14]

I don't know much about changing wheels offsets, but grinding them down doesn't seem like too bright of an Idea

[Buck6687]

looks to be plenty of meat on them. you'd easily take 5mm off these:

+11 and +16 fit this (3/4 inch narrower up front and 3/4 inch wider out back)

http://www.golfmkv.com/forums/showpo...29&postcount=6

your old rears vs your new rears-
http://www.willtheyfit.com/index.php...&Submit=Submit
old fronts vs new fronts-
http://www.willtheyfit.com/index.php...&Submit=Submit

[iBmxgeo]

W

[1badg35]

that picture doesnt show anything. how thick is it from the countersunk area for the bolt seat to the back of the pad?

milling off the backpad is fine if the bolt seat isnt too close to the backpad.. doing this would raise offset to a higher number making the wheel less aggressive

[Byron]

15mm is a lot to be milling a backpad, I have yet to see a wheel that can take that much.

If the faces are sandwich mount, you could face mount them which would make the wheel about half an inch narrower but would get the lip in that much more. If they're reserve mount it wouldn't change the width, but the offset would gain about 12-15mm.

[iBmxgeo]

looks to be plenty of meat on them. you'd easily take 5mm off these:

+11 and +16 fit this (3/4 inch narrower up front and 3/4 inch wider out back)

http://www.golfmkv.com/forums/showpo...29&postcount=6

your old rears vs your new rears-
http://www.willtheyfit.com/index.php...&Submit=Submit
old fronts vs new fronts-
http://www.willtheyfit.com/index.php...&Submit=Submit

thanks for the info. much appreciated. I didn't even think about using that willtheyfit site. It's amazing.

any idea on if it's possible to shave the rotor down safely?

[Buck6687]

shaving rotors is a huge NO.
the rotor is all your car relies on to brake. its not even a possibility.

[cbus mkv]

i think he meant shaving the caliper. i have seen this done

[Oh, Word?]

15mm is a lot to be milling a backpad, I have yet to see a wheel that can take that much.

If the faces are sandwich mount, you could face mount them which would make the wheel about half an inch narrower but would get the lip in that much more. If they're reserve mount it wouldn't change the width, but the offset would gain about 12-15mm.

My thoughts exactly. I've seen 5mm taken off backing pads and even that can be sketchy.

[iBmxgeo]

15mm is a lot to be milling a backpad, I have yet to see a wheel that can take that much.

If the faces are sandwich mount, you could face mount them which would make the wheel about half an inch narrower but would get the lip in that much more. If they're reserve mount it wouldn't change the width, but the offset would gain about 12-15mm.

The question was to take 8 off not 15.

i think he meant shaving the caliper. i have seen this done

Thanks for correcting me. Didnt even realize I messed up on that



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[cruuz]

shaving calipers is much more common, and there's a good chance it wouldnt be the entire body, more likely just the high spots/ribs/protrusions that would need to come down. usually not a problem, but that also depends on your specific application. post up some pics, or get in there and measure it out

[a112]

You can shave the center on the hub mount side and on the lip/barrel mount side a bit. You can also shave the rotors and the hubs, and if all that's not enough, go front mount! Also do all that on your own risk. I wouldn't do this on cast wheels for sure, only forged. Also when you shave the disc/hub be careful as they are prone to cracking.