Thinking of widening a rear set of 10" wide ZCP wheels

Dave07997S · 08-27-2011, 12:42 PM

by 1" on the inner rim, how would this affect offset?

Dave

elh0102 · 08-27-2011, 01:22 PM

If you are adding 1" inboard of centerline, wouldn't that have the effect of adding 25mm to offset?

pbonsalb · 08-27-2011, 01:59 PM

I would sell them and buy a set of aftermarket wider wheels.

M3SQRD · 08-27-2011, 02:41 PM

Quote:

Originally Posted by pbonsalb

I would sell them and buy a set of aftermarket wider wheels.

+1

Get rid of factory 10" wide wheel and buy a properly engineered 11" wide wheel.

Dave07997S · 08-27-2011, 03:22 PM

There is nothing wrong with widening wheels as long as its done properly. I have had a set of wheels that I tracked with that was widened as do alot of other people with no issues.

Now can someone give me an answer to the original question...where's Malek?

Dave

signes · 08-27-2011, 10:37 PM

Curious how they do this? Add 1" to the barrel?

Dave07997S · 08-28-2011, 12:01 AM

Quote:

Originally Posted by signes

Curious how they do this? Add 1" to the barrel?

http://www.weldcraftwheels.com/index-1.html

I've used them before, Malek turned me on to someone local in S.Cali.

Dave

pbonsalb · 08-28-2011, 05:27 AM

I am curious what you will be paying for this.

signes · 08-28-2011, 10:54 AM

Quote:

Originally Posted by Dave07997S

Quote:

Originally Posted by signes

Curious how they do this? Add 1" to the barrel?

http://www.weldcraftwheels.com/index-1.html

I've used them before, Malek turned me on to someone local in S.Cali.

Dave

interesting, thanks. Would have thought there would be structural issues but guess that isn't the case in your experience. Let us know how it turns out.

tintboy · 08-28-2011, 01:32 PM

Hey guys i figured since you are on the topic.

They are oem 19x10 comp wheels with 1 in added after i got them back more like 1in 1/4. Rears have 12mm spacer with 295-30-19. Fronts are stock rear comp wheels 19x10 with stock 265-35-19. I currently have 275-30 19 in transit for the fronts to even it out.
sorry for the crappy pics. I took them in the garage while the hurricane was going on,
As you can see in the pic the wheels where done so well they only needed that one little weight to balance the wheel.

Dave07997S · 08-28-2011, 01:35 PM

Quote:

Originally Posted by tintboy

Hey guys i figured since you are on the topic.

They are oem 19x10 comp wheels with 1 in added after i got them back more like 1in 1/4. Rears have 12mm spacer with 295-30-19. Fronts are stock rear comp wheels 19x10 with stock 265-35-19. I currently have 275-30 19 in transit for the fronts to even it out.
sorry for the crappy pics. I took them in the garage while the hurricane was going on,
As you can see in the pic the wheels where done so well they only needed that one little weight to balance the wheel.

Thanks big guy...who did the wheels? Weldcraft? They did mine on a 98 Mustang Cobra I owned. Malek turned me on to someone more local, its just that Weldcraft has been doing this for years.

I will be going down the same road or a set of Forgestar F14s in 19x10 and 19x11. Any idea in how much weight it added? Also no rubbing even with the 12mm spacer and 295's??

Dave

tintboy · 08-28-2011, 02:00 PM

Quote:

Originally Posted by Dave07997S

Thanks big guy...who did the wheels? Weldcraft? They did mine on a 98 Mustang Cobra I owned. Malek turned me on to someone more local, its just that Weldcraft has been doing this for years.

I will be going down the same road or a set of Forgestar F14s in 19x10 and 19x11. Any idea in how much weight it added? Also no rubbing even with the 12mm spacer and 295's??

Dave

I used a shop near me who has been doing wheel work since 1976. Wheel works in Burlington NJ. As far as weight i cant say how much but i can say it didn't add to much when i had them in my hands. I did have a slight rub on the inner fender where the bumper and fender meet it bumps out on the inside. I warmed it up with a heat gun and pushed it in a little. Since then its been good.

M3SQRD · 08-29-2011, 05:50 AM

If you add 1" to the inside edge (inner "barrel") of the ZCP 10" wide rear wheel, you'd change the wheel from a 10" ET25 to an 11" ET38 (actually 37.7).

Malek@MRF · 08-29-2011, 09:56 AM

Hi dave. I tried call you back a couple times, but couldn't reach you at the office. PM me your cell. I'll call you today.

e92_m3 · 04-30-2012, 10:49 PM

Dave,
Any updates on this?

tibra1 · 04-30-2012, 10:57 PM

Some just looks for ways to have a wheel fail.. This is analogous to cutting springs for lower ride height..unsafe imo. Buying a properly made correct sized wheel is clearly the better option

m3an · 04-30-2012, 11:04 PM

Quote:

Originally Posted by tibra1

Some just looks for ways to have a wheel fail.. This is analogous to cutting springs for lower ride height..unsafe imo. Buying a properly made correct sized wheel is clearly the better option

this has been being done for a long time w/ no issues. Done properly it's a good idea. I remember all ther supra guys doing it for slicks back in the day.

Dave07997S · 05-01-2012, 01:32 AM

Quote:

Originally Posted by e92_m3

Dave,
Any updates on this?

Haven't done it yet...not that Im worried about failing its just I may want a lighter wheel. I'm probably leaning toward a set of Forgestars in 19X10 ET25 and 19X11 ET33s. With Mich PSS in 275/30/19 and 295/30/10 the weight won't be that far off the OEM ZCP wheels and tires but with 30mm more width per tire.

Its just that I love the look of the OEM ZCP wheel.

Dave

kaiv · 05-01-2012, 01:51 AM

Quote:

Originally Posted by Dave07997S

by 1" on the inner rim, how would this affect offset?

Dave

Offset is the distance from the center of the wheel to the mounting face.

Widen the wheel = you are relocating the center of the wheel to a new position = its distance to the mounting face changes = you are changing offset.

You'll end up with a 19x11 ET37.5ish.

In any case measure and make sure you have have an extra 1in/25mm to spare on the inside. Maybe a little more to take into account the tire.

And since the wheel is somewhat sunken into the fender (outer clearance doesn't change) you might want to run a spacer to bring it out and gain clearance on the inside.

e92_m3 · 05-01-2012, 02:13 AM

Quote:

Originally Posted by Dave07997S

Haven't done it yet...not that Im worried about failing its just I may want a lighter wheel. I'm probably leaning toward a set of Forgestars in 19X10 ET25 and 19X11 ET33s. With Mich PSS in 275/30/19 and 295/30/10 the weight won't be that far off the OEM ZCP wheels and tires but with 30mm more width per tire.

Its just that I love the look of the OEM ZCP wheel.

Dave

I also wanted to get my wheel widened as well. Anyways, keep us updated on this one Dave!

Quote:

Originally Posted by kaiv

Offset is the distance from the center of the wheel to the mounting face.

Widen the wheel = you are relocating the center of the wheel to a new position = its distance to the mounting face changes = you are changing offset.

You'll end up with a 19x11 ET37.5ish.

In any case measure and make sure you have have an extra 1in/25mm to spare on the inside. Maybe a little more to take into account the tire.

And since the wheel is somewhat sunken into the fender (outer clearance doesn't change) you might want to run a spacer to bring it out and gain clearance on the inside.

^^^Good info.^^^ Thanks!

SROC3 · 05-01-2012, 03:07 AM

gosh....not to be a downer here, but that looks like structural failure waiting to happen. Seems kinda dangerous to have welds consistently bearing rotational loads.

S65V8 · 05-01-2012, 05:17 AM

Quote:

Originally Posted by dbarnes

+1

Get rid of factory 10" wide wheel and buy a properly engineered 11" wide wheel.

+1

Quote:

Originally Posted by SROC3

gosh....not to be a downer here, but that looks like structural failure waiting to happen. Seems kinda dangerous to have welds consistently bearing rotational loads.

+2

08-27-2011, 12:42 PM	#1
Dave07997S Brigadier General 720 Rep 3,964 Posts Drives: 2020 Ford Mustang GT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	Thinking of widening a rear set of 10" wide ZCP wheels by 1" on the inner rim, how would this affect offset? Dave __________________ 2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk
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08-27-2011, 01:22 PM	#2
elh0102 Captain 15 Rep 751 Posts Drives: 2009 335i coupe Join Date: Apr 2010 Location: USA iTrader: (0)	If you are adding 1" inboard of centerline, wouldn't that have the effect of adding 25mm to offset?
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08-27-2011, 01:59 PM	#3
pbonsalb Lieutenant General 5212 Rep 10,592 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I would sell them and buy a set of aftermarket wider wheels.
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08-27-2011, 03:22 PM	#5
Dave07997S Brigadier General 720 Rep 3,964 Posts Drives: 2020 Ford Mustang GT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	There is nothing wrong with widening wheels as long as its done properly. I have had a set of wheels that I tracked with that was widened as do alot of other people with no issues. Now can someone give me an answer to the original question...where's Malek? Dave __________________ 2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk
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08-27-2011, 10:37 PM	#6
signes Brigadier General 199 Rep 4,318 Posts Drives: 991 GT3 RS Join Date: Sep 2008 Location: Living at (almost...) 9k iTrader: (5)	Curious how they do this? Add 1" to the barrel? __________________ GT3 RS \| Desperately seeking the next great M car...
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08-28-2011, 05:27 AM	#8
pbonsalb Lieutenant General 5212 Rep 10,592 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	I am curious what you will be paying for this.
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08-28-2011, 01:32 PM	#10
tintboy Second Lieutenant 52 Rep 261 Posts Drives: 2011 E92 M3 Join Date: Aug 2007 Location: NJ iTrader: (3)	Hey guys i figured since you are on the topic. They are oem 19x10 comp wheels with 1 in added after i got them back more like 1in 1/4. Rears have 12mm spacer with 295-30-19. Fronts are stock rear comp wheels 19x10 with stock 265-35-19. I currently have 275-30 19 in transit for the fronts to even it out. sorry for the crappy pics. I took them in the garage while the hurricane was going on, As you can see in the pic the wheels where done so well they only needed that one little weight to balance the wheel. Attached Images __________________ Present 2022 M5 CS FROZEN BH PAST~2011 E92M3 Space Grey Gintani STAGE X
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08-29-2011, 05:50 AM	#13
M3SQRD Major General 2095 Rep 5,490 Posts Drives: E92 M3,G20 330ix,F22 240iX,F82 Join Date: Jun 2009 Location: Mid-Atlantic iTrader: (11)	If you add 1" to the inside edge (inner "barrel") of the ZCP 10" wide rear wheel, you'd change the wheel from a 10" ET25 to an 11" ET38 (actually 37.7).
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08-29-2011, 09:56 AM	#14
Malek@MRF BimmerPost Supporting Vendor 731 Rep 3,735 Posts Drives: E92 M3, E46 M3, G82 M4 Join Date: Jan 2008 Location: Irvine, California iTrader: (5)	Hi dave. I tried call you back a couple times, but couldn't reach you at the office. PM me your cell. I'll call you today. __________________ BMW PERFORMANCE SPECIALISTS. Race Engines. Suspension. F/I. Brakes. Race Preparation. Factory Service. Alignments. OFFICIAL PARTNERS: KW. MOTON. Brembo. AP Racing. BBS Motorsport. iND. HRE. Turner Motorsport. VAC. BMW Motorsport. Facebook \| Instagram \| Yelp! \| Flikr Phone: 949-233-0448 \| E-Mail: info@mrfengineering.com
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04-30-2012, 10:49 PM	#15
e92_m3 Lieutenant Colonel 194 Rep 1,680 Posts Drives: 2009 e92 m3 Join Date: Mar 2010 Location: Bay Area, California iTrader: (0)	Dave, Any updates on this? __________________ Hellaflush? All I could say is "effyo'flush",*"flushnuff", and Instead of 'illest', I'm calling it "faillest"*. It's just form over function nowadays... -END RANT
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04-30-2012, 10:57 PM	#16
tibra1 Banned 127 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	Some just looks for ways to have a wheel fail.. This is analogous to cutting springs for lower ride height..unsafe imo. Buying a properly made correct sized wheel is clearly the better option
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05-01-2012, 03:07 AM	#21
SROC3 The limit of adhesion is my home. 1702 Rep 3,778 Posts Drives: Like a Boss. Join Date: Sep 2006 Location: three.one.zero iTrader: (1)	gosh....not to be a downer here, but that looks like structural failure waiting to happen. Seems kinda dangerous to have welds consistently bearing rotational loads. __________________ 2019 X3 xDrive30i Glacier Silver \| Cognac w/ Fine Cove \| MSport \| Premium \| Dynamic Handling PKG \| Drive Assist \| HK w/ Bavsound Upgrade \|
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