Nissan 370Z Forum  

What did you do with your Z today III

Originally Posted by Pintsize725 Still doesn't help me if I don't know what the heck offset is and what I should get. What widths do you want? I can help

Go Back   Nissan 370Z Forum > Nissan 370Z General Area > Nissan 370Z General Discussions


Closed Thread
 
LinkBack Thread Tools Display Modes
Old 06-07-2012, 11:48 AM   #8716 (permalink)
A True Z Fanatic
 
Red__Zed's Avatar
 
Join Date: Jul 2010
Location: window seat
Posts: 28,940
Drives: Mostly on two wheels
Rep Power: 120
Red__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond repute
Default

Quote:
Originally Posted by Pintsize725 View Post
Still doesn't help me if I don't know what the heck offset is and what I should get.
What widths do you want? I can help once we have that down.


I can also explain...If you teach a man to fish, right?


Offsets aren't particularly hard to work with, but many people struggle because they have never had them explained well.

When you are installing a set of rims, there are generally two things you need to worry about. One is inner clearance, and the other is outer clearance.

I'm going to assume you aren't doing anything truly crazy, which means we can ignore the inner clearance and just worry about the outer clearance, which will make things a little bit easier.

Your wheel basically looks like this, with the right side being the face, and the bulge representing where the wheel mounts. The spacing between the mounting face and the center of the wheel is the offset.



If this number is zero, the mounting face is in the center of the wheel. If it is positive, it is on the face's side of center,(right, in this picture) and if it is negative, the mounting point is on half of the rim away from the face.

This basically translates to meaning a higher (positive) offset brings your wheel in tighter to the car, while a lower (or negative) offset spaces the wheel out.

To start, let's look at the stock 18" rim sizes:

F: 8" ; +43mm
R: 9" ; +15mm

So our outside width for the stock rims is:

F: = 4" - 43mm = 5.86cm
R: = 4.5" - 15mm = 9.93cm

Of course, stock rims aren't very aggressive, and most people want something that pushes them out a bit more.

25mm spacer front and rear gives us something like this:


F: = 4" - 18mm = 8.36cm
R: = 4.5" +10mm = 10.43cm

And a more aggressive 9.5/15 (this may actually rub) || 10.5/5 gives us:


F: = 4.75 - 15mm = 10.565cm
R: = 5.25 - 5mm = 12.835cm


The long and the short of this is that what offset you need is going to vary dramatically based on the width of the wheel you need, and the look you want.

Something aggressive might be in the range of:
F: 9.5" , +18
R: 10.5, +5


If you want to stay with stock widths and keep the offsets, you have those numbers. If you want to space them out more, just subtract out how much extra spacing you want* (ie, 25mm spacer takes the front to a +18 and the rear to a -10).

These numbers should give you an idea how various offsets will sit
Red__Zed is offline  
Old 06-07-2012, 11:53 AM   #8717 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,450
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Quote:
Originally Posted by Red__Zed View Post
I can also explain...If you teach a man to fish, right?
Holy Explanation Batman! Thank you sir. I didn't even know that I didn't know some of that info. Rep'd!
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline  
Old 06-07-2012, 11:54 AM   #8718 (permalink)
A True Z Fanatic
 
m4a1mustang's Avatar
 
Join Date: Feb 2009
Location: Northern VA
Posts: 55,385
Drives: on two wheels
Rep Power: 6962
m4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond reputem4a1mustang has a reputation beyond repute
Default

Damn why is that Mustang fanboy helping Z owners out?
__________________
- Steve
MAZOC Meet Thread
Zs & Coffee - Saturdays at 10AM in Fairfax, VA and Columbia, MD (Click the banner!)
LIKE us on Facebook!
m4a1mustang is offline  
Old 06-07-2012, 11:58 AM   #8719 (permalink)
A True Z Fanatic
 
Red__Zed's Avatar
 
Join Date: Jul 2010
Location: window seat
Posts: 28,940
Drives: Mostly on two wheels
Rep Power: 120
Red__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond repute
Default

Quote:
Originally Posted by m4a1mustang View Post
Damn why is that Mustang fanboy helping Z owners out?
June 7th is a trolling holiday
Red__Zed is offline  
Old 06-07-2012, 11:59 AM   #8720 (permalink)
A True Z Fanatic
 
JARblue's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Age: 43
Posts: 36,450
Drives: 11 Z34, 98 E36 M3
Rep Power: 2684440
JARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond reputeJARblue has a reputation beyond repute
Default

Quote:
Originally Posted by Red__Zed View Post
June 7th is a trolling holiday
lol @ you calling that post trolling
__________________

2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed |
JARblue is offline  
Old 06-07-2012, 12:01 PM   #8721 (permalink)
A True Z Fanatic
 
Join Date: Jan 2012
Location: Austin
Posts: 14,196
Drives: 2016 Mazda 6
Rep Power: 211844
Pintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond repute
Default

Quote:
Originally Posted by Red__Zed View Post
What widths do you want? I can help once we have that down.


I can also explain...If you teach a man to fish, right?

I'm going to assume you aren't doing anything truly crazy, which means we can ignore the inner clearance and just worry about the outer clearance, which will make things a little bit easier.


To start, let's look at the stock 18" rim sizes:

F: 8" ; +43mm
R: 9" ; +15mm

So our outside width for the stock rims is:

F: = 4" - 43mm = 5.86cm
R: = 4.5" - 15mm = 9.93cm

Of course, stock rims aren't very aggressive, and most people want something that pushes them out a bit more.

25mm spacer front and rear gives us something like this:


F: = 4" - 18mm = 8.36cm
R: = 4.5" +10mm = 10.43cm

And a more aggressive 9.5/15 (this may actually rub) || 10.5/5 gives us:


F: = 4.75 - 15mm = 10.565cm
R: = 5.25 - 5mm = 12.835cm


The long and the short of this is that what offset you need is going to vary dramatically based on the width of the wheel you need, and the look you want.

Something aggressive might be in the range of:
F: 9.5" , +18
R: 10.5, +5


If you want to stay with stock widths and keep the offsets, you have those numbers. If you want to space them out more, just subtract out how much extra spacing you want* (ie, 25mm spacer takes the front to a +18 and the rear to a -10).

These numbers should give you an idea how various offsets will sit
I talked to someone at Modbargains yesterday and after explaining the tire/wheel size I'd like to stay at, they recommended 18x8.5 & 18x9.0. Based on this info, what would you recommend I do about the offset?

Thank you for the explanation!! Will definitely rep when I get a chance.
__________________
Tracie
Pintsize725 is offline  
Old 06-07-2012, 12:03 PM   #8722 (permalink)
A True Z Fanatic
 
Join Date: Aug 2009
Location: N/A
Posts: 76,801
Drives: N/A
Rep Power: 141521
kenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond repute
Default

Wheel Tech - Offset

offset. also read the other FAQ's. good info there.
kenchan is offline  
Old 06-07-2012, 12:07 PM   #8723 (permalink)
A True Z Fanatic
 
onzedge's Avatar
 
Join Date: Apr 2010
Location: Battle Lake MN
Age: 64
Posts: 183,964
Drives: 370Z 240Z
Rep Power: 2684736
onzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond reputeonzedge has a reputation beyond repute
Default

Quote:
Originally Posted by Red__Zed View Post
June 7th is a trolling holiday
__________________
Koni|Swift|Michelin|Motordyne|Berk|RJM Performance|Gates|SPL|Motul|Technafit|Ate Super Blue|Hawk
Tommy Kaira|Momo|Optima|Hella|Hotchkis|Red Line|ZSpeed|Stillen|B&M|H&R
onzedge is offline  
Old 06-07-2012, 12:07 PM   #8724 (permalink)
A True Z Fanatic
 
Red__Zed's Avatar
 
Join Date: Jul 2010
Location: window seat
Posts: 28,940
Drives: Mostly on two wheels
Rep Power: 120
Red__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond repute
Default

Quote:
Originally Posted by Pintsize725 View Post
I talked to someone at Modbargains yesterday and after explaining the tire/wheel size I'd like to stay at, they recommended 18x8.5 & 18x9.0. Based on this info, what would you recommend I do about the offset?

Thank you for the explanation!! Will definitely rep when I get a chance.
To stay with stock fitments, you would want +15 in the rear and about 50mm up front. There's probably room to go to about a -10 rear and 25-30mm up front.
Red__Zed is offline  
Old 06-07-2012, 12:21 PM   #8725 (permalink)
A True Z Fanatic
 
Join Date: Aug 2009
Location: N/A
Posts: 76,801
Drives: N/A
Rep Power: 141521
kenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond repute
Default

18x8.5 and 18x9 are good for snow tires.


get 18x9 and 18x10's minimum. front 30-35mm offset, rear 15-20mm offset for stock height.
kenchan is offline  
Old 06-07-2012, 12:22 PM   #8726 (permalink)
A True Z Fanatic
 
LunaZ's Avatar
 
Join Date: Mar 2010
Location: Vagabond
Posts: 6,704
Drives: Project: a white one
Rep Power: 512
LunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond reputeLunaZ has a reputation beyond repute
Default

Left it home today. Weather forecast on my phone said thunderstorms. I have free time for lunch and it's gorgeous out... figures!
__________________

2009 370Z Sport/Touring/Navigation | see my journal for mods
facebook: Be my friend... or not.
LunaZ is offline  
Old 06-07-2012, 12:23 PM   #8727 (permalink)
A True Z Fanatic
 
Join Date: Aug 2009
Location: N/A
Posts: 76,801
Drives: N/A
Rep Power: 141521
kenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond reputekenchan has a reputation beyond repute
Default

Quote:
Originally Posted by LunaZ View Post
Left it home today. Weather forecast on my phone said thunderstorms. I have free time for lunch and it's gorgeous out... figures!
lol, which app are you using? i use weatherbug and it's pretty accurate. better than weatherchannel and other apps ive tried. trick is to see radar in motion and barometric pressure.
kenchan is offline  
Old 06-07-2012, 12:25 PM   #8728 (permalink)
A True Z Fanatic
 
GaleForce's Avatar
 
Join Date: Aug 2011
Location: Ontario, Canada
Posts: 21,749
Drives: Varis Arising II
Rep Power: 51865
GaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond reputeGaleForce has a reputation beyond repute
Default

Quote:
Originally Posted by kenchan View Post
made a little tripod bracket on the rear bar... lol (never mind the tape on there on the bottom... just holding the screw in place until i get the 3/8 to 1/4 adapter on there.

Looks good. Have you tried it out yet? Does the mic pick up any vibration or noise from the bar?

Edit - oops, I assumed this is for the mic...
__________________
GaleForce is offline  
Old 06-07-2012, 12:25 PM   #8729 (permalink)
A True Z Fanatic
 
Join Date: Jan 2012
Location: Austin
Posts: 14,196
Drives: 2016 Mazda 6
Rep Power: 211844
Pintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond reputePintsize725 has a reputation beyond repute
Default

Quote:
Originally Posted by kenchan View Post
18x8.5 and 18x9 are good for snow tires.


get 18x9 and 18x10's minimum. front 30-35mm offset, rear 15-20mm offset for stock height.
Will that work with these tires?

Front Size

225/50ZR18XL 99Y B

Rear Size

245/45ZR18XL 100Y B
__________________
Tracie
Pintsize725 is offline  
Old 06-07-2012, 12:28 PM   #8730 (permalink)
A True Z Fanatic
 
Red__Zed's Avatar
 
Join Date: Jul 2010
Location: window seat
Posts: 28,940
Drives: Mostly on two wheels
Rep Power: 120
Red__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond reputeRed__Zed has a reputation beyond repute
Default

Quote:
Originally Posted by kenchan View Post
18x8.5 and 18x9 are good for snow tires.


get 18x9 and 18x10's minimum. front 30-35mm offset, rear 15-20mm offset for stock height.
She's trying to keep tires.



I personally recommend just running out the new tires and going all out when those wear out though.
Red__Zed is offline  
Closed Thread

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Today was the day..... Investr Introduction 7 01-21-2012 08:56 PM
Got Z? I did today! dharvison New 370Z Owner 17 12-14-2011 05:45 PM
Saw a GTR today bigaudiofanat The Lounge (Off Topic) 30 07-15-2011 06:14 PM
New as of today prodigyz New 370Z Owner 1 04-14-2009 01:42 AM
Got My Car Today PJ370Z New 370Z Owner 2 03-01-2009 01:30 AM


All times are GMT -5. The time now is 09:46 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2