XY Wheel offsets! Please help! - Aussie V8 | Holden - Ford

PRO-GMH · 27-04-2008, 09:20 PM

Lads,

Dad is finishing off his 13 year build of his XY (GT mock)... the thing is immaculate with mostly genuine parts. Its got a stout 351, toploader and 9 inch but I have finally convinced him to get rid of the white painted globe wheels and get into some weld / centrelines!

The only problem is we dont know what offset to get on the rear. He wants some fat rear tyres and a nice dish. A friend has 265/?/15s on his and they are a custom rim (unsure of size) and seem to be ok... rubs occasionally on the inner gaurd however.

The gaurds are NOT rolled and he does not want to get them done.

So, if you know the correct offset we're chasing and even better if you can provide a picture of how it looks!? His friend is trying to convince him to get 17 inch wheels... pfft... c'mon lads help me out so we can give this XY the finishing touch it needs.

ps: The diff is a standard length 9"
Brett

toryman · 28-04-2008, 11:09 PM

XY offset is +11 mate, with a centre bore of 70.7 if thats any help to u.

PRO-GMH · 29-04-2008, 08:10 AM

+11 what?

I need to know what size rim I can go and what offset to get.

toryman · 29-04-2008, 09:39 PM

Offset is the distance the hub mounting surface of a wheel is offset from the centering of the wheel, measured in millimeters. Its either a + or - figure, so the XY has an offset of positive 11mm, dont stray too far from that number and u will be fine. As far as wheel size goes, im afraid ive forgotten almost everything i ever knew about that side of things mate, sorry.

PRO-GMH · 30-04-2008, 08:45 AM

hrrm... It might be a case of doing some measurements. I was hoping someone just knew what size to get! Thanks for your help.

WB5LTR · 30-04-2008, 08:51 AM

why not try and ring wheel suppliers or speed shops they may know what you can and cant fit

PRO-GMH · 30-04-2008, 12:23 PM

Rang super plus who say its definately a 4.5" rear backspacing on an 8" rim. :P

xwgt · 27-07-2008, 09:46 PM

I have 8'' rims with 245/60s & it slighty rubs on the outside upper rear guard ,roads around here are rough though,my gt is lowered 2 1/2 inchs its low.I will measure the off set of my rims after i get offshift one weeks time (its around 4 ,4 1/2 inchs)

TuffXR · 27-07-2008, 10:24 PM

I have 275-60-15s Auto Drags on the back of mine and have no issues.

xwgt · 28-07-2008, 09:33 AM

how low is your XR is the diff standard length or shortened?
I just measured my diff it is 1515mm, drum to drum. My rim offset is 3.5inches with this offset it slightly rubs my dual 3inch pipes only on large bumps. In the near future I will dump the pipes before the diff which will allow me to go to a 4inch or 4 1/2 inch offset rim. What offset are your rims tuffxr?

TuffXR · 28-07-2008, 01:48 PM

I have 8.5 Auto Drags. It isn't lowed at all just standard height springs.

27-04-2008, 09:20 PM	#1 (permalink)
PRO-GMH Senior Member Trade Rating: (0) Join Date: May 2007 Location: Bronx Ride: monaro coupe 350 Posts: 673	XY Wheel offsets! Please help! Lads, Dad is finishing off his 13 year build of his XY (GT mock)... the thing is immaculate with mostly genuine parts. Its got a stout 351, toploader and 9 inch but I have finally convinced him to get rid of the white painted globe wheels and get into some weld / centrelines! The only problem is we dont know what offset to get on the rear. He wants some fat rear tyres and a nice dish. A friend has 265/?/15s on his and they are a custom rim (unsure of size) and seem to be ok... rubs occasionally on the inner gaurd however. The gaurds are NOT rolled and he does not want to get them done. So, if you know the correct offset we're chasing and even better if you can provide a picture of how it looks!? His friend is trying to convince him to get 17 inch wheels... pfft... c'mon lads help me out so we can give this XY the finishing touch it needs. ps: The diff is a standard length 9" Brett

28-04-2008, 11:09 PM	#2 (permalink)
toryman Pure Evil Trade Rating: (0) Join Date: Dec 2005 Location: Im a local everywhere Ride: everything i can get my hands on, 4 wheels or 2 Posts: 2,335	XY offset is +11 mate, with a centre bore of 70.7 if thats any help to u. __________________ Now available in Sober, but for a limited time only! I wish it wasn't illegal to shoot stupid people.

29-04-2008, 09:39 PM	#4 (permalink)
toryman Pure Evil Trade Rating: (0) Join Date: Dec 2005 Location: Im a local everywhere Ride: everything i can get my hands on, 4 wheels or 2 Posts: 2,335	Offset is the distance the hub mounting surface of a wheel is offset from the centering of the wheel, measured in millimeters. Its either a + or - figure, so the XY has an offset of positive 11mm, dont stray too far from that number and u will be fine. As far as wheel size goes, im afraid ive forgotten almost everything i ever knew about that side of things mate, sorry. __________________ Now available in Sober, but for a limited time only! I wish it wasn't illegal to shoot stupid people.

30-04-2008, 08:51 AM	#6 (permalink)
WB5LTR Do you ever leave? Trade Rating: (0) Join Date: Mar 2007 Location: Vic Ride: Holden WB ute, '05 WR450F Posts: 2,068	why not try and ring wheel suppliers or speed shops they may know what you can and cant fit __________________

28-07-2008, 09:33 AM	#10 (permalink)
xwgt Newbie Trade Rating: (0) Join Date: Mar 2006 Location: brisbane Ride: xwgt Posts: 24	how low is your XR is the diff standard length or shortened? I just measured my diff it is 1515mm, drum to drum. My rim offset is 3.5inches with this offset it slightly rubs my dual 3inch pipes only on large bumps. In the near future I will dump the pipes before the diff which will allow me to go to a 4inch or 4 1/2 inch offset rim. What offset are your rims tuffxr? Last edited by xwgt; 28-07-2008 at 10:22 AM.

29-04-2008, 08:10 AM	#3 (permalink)
PRO-GMH Senior Member Trade Rating: (0) Join Date: May 2007 Location: Bronx Ride: monaro coupe 350 Posts: 673	+11 what? I need to know what size rim I can go and what offset to get.

30-04-2008, 08:45 AM	#5 (permalink)
PRO-GMH Senior Member Trade Rating: (0) Join Date: May 2007 Location: Bronx Ride: monaro coupe 350 Posts: 673	hrrm... It might be a case of doing some measurements. I was hoping someone just knew what size to get! Thanks for your help.

30-04-2008, 12:23 PM	#7 (permalink)
PRO-GMH Senior Member Trade Rating: (0) Join Date: May 2007 Location: Bronx Ride: monaro coupe 350 Posts: 673	Rang super plus who say its definately a 4.5" rear backspacing on an 8" rim. :P

27-07-2008, 09:46 PM	#8 (permalink)
xwgt Newbie Trade Rating: (0) Join Date: Mar 2006 Location: brisbane Ride: xwgt Posts: 24	I have 8'' rims with 245/60s & it slighty rubs on the outside upper rear guard ,roads around here are rough though,my gt is lowered 2 1/2 inchs its low.I will measure the off set of my rims after i get offshift one weeks time (its around 4 ,4 1/2 inchs)

27-07-2008, 10:24 PM	#9 (permalink)
TuffXR casual poster Trade Rating: (0) Join Date: Feb 2005 Location: Melbourne Ride: 1967 XR Fairmont Posts: 67	I have 275-60-15s Auto Drags on the back of mine and have no issues.

28-07-2008, 01:48 PM	#11 (permalink)
TuffXR casual poster Trade Rating: (0) Join Date: Feb 2005 Location: Melbourne Ride: 1967 XR Fairmont Posts: 67	I have 8.5 Auto Drags. It isn't lowed at all just standard height springs.

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