Go Back  MY350Z.COM - Nissan 350Z and 370Z Forum Discussion > 350Z Tech Area > Wheels & Tires
Reload this Page >

BACK TO BASICS: WHEEL OFFSET? (Pictorial Explanation for Offset Novices)

Notices
Wheels & Tires 350Z Rollers and Rubbers
Sponsored by:
Sponsored by:

BACK TO BASICS: WHEEL OFFSET? (Pictorial Explanation for Offset Novices)

Old 03-23-2016, 11:22 PM
  #21  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by cincysilvias14 View Post
ok to let me get this strait. generally a +20 offset and under works best for a new wheel. If you have an offset of say+50 you have to use a spacer to get back to the original +30mm oem offset?
Yes.

I hate spacers but I use 'em to do just that. I use a pair of 20mms to get my Nismo S-Tune 370Z wheels down to a reasonable offset to run on Z33.

And to further illustrate, I'm also including a set of 20mm spacers for a set of +40 wheels I just posted to run at 20mm. So, like 'em or not - and it's ALWAYS better to run without 'em by running "correct" wheels - spacers do have a place in my tool chest.
MicVelo is offline  
Old 03-24-2016, 05:02 AM
  #22  
dboyzalter
6 inch cawk is my fave!
iTrader: (3)
 
Join Date: Apr 2015
Location: Mass
Posts: 6,406
Received 884 Likes on 705 Posts
Default

Im having a hard time getting spacers, I am almost talking myself into a set of enkei 18x9.5 +15s because its only $760 more then a quality pair of spacers... I keep going back and forth though because I like the anniversary wheels, I just dont love the offset or the 8.5 width... I was seriously thinking about buying that dudes 18x10.5 +15 square set-up but I dont want to run front tires that wide... Was thinking 245-40 front 275-40 rears... So many choices...

Are their any venders better than tire rack? They seem like they will be easy to deal with because I can have them mount balance and ship to my door... For $1500 it's tempting.



Last edited by dboyzalter; 03-24-2016 at 05:03 AM.
dboyzalter is offline  
Old 03-24-2016, 07:02 AM
  #23  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by dboyzalter View Post
Im having a hard time getting spacers, I am almost talking myself into a set of enkei 18x9.5 +15s because its only $760 more then a quality pair of spacers... I keep going back and forth though because I like the anniversary wheels, I just dont love the offset or the 8.5 width... I was seriously thinking about buying that dudes 18x10.5 +15 square set-up but I dont want to run front tires that wide... Was thinking 245-40 front 275-40 rears... So many choices...

Are their any venders better than tire rack? They seem like they will be easy to deal with because I can have them mount balance and ship to my door... For $1500 it's tempting.


Well, not speaking ill of TR because I've been buying from them since they were a start up back in the, uhhh, well, "stone age", before most people here were born or out of diapers.

But honestly, I've found comparable pricing at some of the bigger locals when you factor in the need for M&B and paying the shipping costs.

However, if you are buying a full set of tires AND wheels together, as you mentioned, then the economies of scale work out more favorably since you skip the M&B charge.

But that all said, I do and know that I will continue to buy tires from them because sometimes you just have to pay for the expertise, advice, and knowledge that TR offers. (I'm big on that and not one to just use all that research that they do then buy somewhere else to save 20 bucks!)

-------------------

For 9.5" wheels, you can easily run 245/40 & 275/40. Technically and physically, you can run a larger contact patch as well. Len (terrasmak) highly recommends a 265/285 (I think it was 285 rear) out back and all the math checks out OK too. Personally, my tire pyrometer tells me the smaller section widths work FOR ME because I run in the hills not the track, where you can get the temps up higher.
MicVelo is offline  
Old 03-26-2016, 04:45 AM
  #24  
cincysilvias14
Registered User
 
cincysilvias14's Avatar
 
Join Date: Jun 2013
Location: Cincinnati, OH
Posts: 249
Received 12 Likes on 9 Posts
Default

so with that being said i am looking at work xsa 04c wheels it gives the options from a positive to a negative offset (assuming you have to contact them and specify) would a negative offset hurt with a bbk?
cincysilvias14 is offline  
Old 03-26-2016, 12:11 PM
  #25  
rearranged
Registered User
 
Join Date: Aug 2014
Location: Central KY
Posts: 347
Received 65 Likes on 47 Posts
Default

I know we have a tire offset calculator here and I'm not knocking it but I use this one because I like the added visuals and extra info provided. Ymmv
rearranged is offline  
The following users liked this post:
cincysilvias14 (03-27-2016)
Old 03-26-2016, 12:35 PM
  #26  
dboyzalter
6 inch cawk is my fave!
iTrader: (3)
 
Join Date: Apr 2015
Location: Mass
Posts: 6,406
Received 884 Likes on 705 Posts
Default

Wouldn't it depend on the spoke design and not the offset? Depending on how the spokes are positioned on the rim it shouldn't matter if its a +30 or a -30
dboyzalter is offline  
Old 03-26-2016, 12:55 PM
  #27  
Spike100
350Z-holic
 
Spike100's Avatar
 
Join Date: Dec 2006
Location: Edina, Minnesota
Posts: 7,130
Received 157 Likes on 135 Posts
Default

I really like this calculator. It's the best I've seen. Thanks for posting the URL.
Originally Posted by rearranged View Post
I know we have a tire offset calculator here and I'm not knocking it but I use this one because I like the added visuals and extra info provided. Ymmv
Spike100 is offline  
Old 03-26-2016, 01:19 PM
  #28  
Spike100
350Z-holic
 
Spike100's Avatar
 
Join Date: Dec 2006
Location: Edina, Minnesota
Posts: 7,130
Received 157 Likes on 135 Posts
Default

Originally Posted by dboyzalter View Post
Wouldn't it depend on the spoke design and not the offset? Depending on how the spokes are positioned on the rim it shouldn't matter if its a +30 or a -30
Spike100 is offline  
Old 03-26-2016, 01:49 PM
  #29  
dboyzalter
6 inch cawk is my fave!
iTrader: (3)
 
Join Date: Apr 2015
Location: Mass
Posts: 6,406
Received 884 Likes on 705 Posts
Default

Originally Posted by Spike100 View Post
specifically talking about clearing big brakes, not if they would actually fit on the car
dboyzalter is offline  
Old 03-27-2016, 03:02 AM
  #30  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by rearranged View Post
I know we have a tire offset calculator here and I'm not knocking it but I use this one because I like the added visuals and extra info provided. Ymmv
OK, maybe I'm just used to the one here (on all Internet Brands sites) but yes, my mileage varies. Don't like the one linked but it's possible it just takes getting some time to get used to it. I find it too cluttered for my use.

I only use the calculator to know how much movement a wheel/tire is going to move inboard or outboard from a reference point and the one here kicks out that info in short work.

I don't need nor even look at the tire height comparison part because it's irrelevant to why I'm using the calculator.

I can visualize all of the rest in my head where it makes sense versus my having to look at a results chart and "decipher" which info I need. Again, that could just be due to unfamiliarity.

But like you said, YMMV. It works for me, doesn't work as well for others who need the extra info/visuals.


PS It could also be that I don't like it because the site is called RIMS and tires. Wheels HAVE RIMS. RIMS are NOT WHEELS.

Last edited by MicVelo; 03-27-2016 at 03:06 AM.
MicVelo is offline  
Old 03-27-2016, 04:19 AM
  #31  
rearranged
Registered User
 
Join Date: Aug 2014
Location: Central KY
Posts: 347
Received 65 Likes on 47 Posts
Default

Originally Posted by MicVelo View Post

PS It could also be that I don't like it because the site is called RIMS and tires. Wheels HAVE RIMS. RIMS are NOT WHEELS.
I know. That bothered me when I first found the site, but I got over it. I liked all the extra "clutter" because I am not the vast wealth of knowledge that is Mic Velo.
rearranged is offline  
Old 03-27-2016, 04:53 AM
  #32  
cincysilvias14
Registered User
 
cincysilvias14's Avatar
 
Join Date: Jun 2013
Location: Cincinnati, OH
Posts: 249
Received 12 Likes on 9 Posts
Default

thanks for the patience guys, kind of a newb at this stuff now that i finally have a car thats worth building. my 240sx's were literal rust buckets. (literally seat was falling through the floor.)
cincysilvias14 is offline  
Old 03-27-2016, 04:58 AM
  #33  
cincysilvias14
Registered User
 
cincysilvias14's Avatar
 
Join Date: Jun 2013
Location: Cincinnati, OH
Posts: 249
Received 12 Likes on 9 Posts
Default

and as for spokes it has an option for the big brake kit. http://www.workwheelsusa.com/media/w...R2P_2015A2.pdf

kind of an idea on what im looking at and its got me confused.
cincysilvias14 is offline  
Old 03-27-2016, 12:47 PM
  #34  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by cincysilvias14 View Post
and as for spokes it has an option for the big brake kit. http://www.workwheelsusa.com/media/w...R2P_2015A2.pdf

kind of an idea on what im looking at and its got me confused.
So I see the "will these fit my BBK?" question time after time after time and no one can say definitively yes or no unless they've run the EXACT COMBINATION.

But wait.... fret not, there's a solution to this!



AND.....



Just about every BBK mfgr offers a template (downloadable) that you can print/cut/compare to see HOW MUCH CLEARANCE is needed behind the wheel to clear calipers and rotors.

And conversely, if you already have BBK or sport brakes (Brembo, Akebono), you already have the dimensions that you need to measure to see if particular wheels will fit. (This is where the backspacing measurement makes sense.... about the only time it's really needed, frankly.)

Why resort to guesswork or the consensus from people who are guessing as well? Get out the steel rule and measure!!
MicVelo is offline  
The following users liked this post:
cincysilvias14 (03-28-2016)
Old 03-27-2016, 12:49 PM
  #35  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by rearranged View Post
I know. That bothered me when I first found the site, but I got over it. I liked all the extra "clutter" because I am not the vast wealth of knowledge that is Mic Velo.
Laff..... there are times when I wish I could trade some of my "experience" for a few years newer birthdate. But alas..... is what it be.
MicVelo is offline  
Old 03-28-2016, 10:39 AM
  #36  
cincysilvias14
Registered User
 
cincysilvias14's Avatar
 
Join Date: Jun 2013
Location: Cincinnati, OH
Posts: 249
Received 12 Likes on 9 Posts
Default

Originally Posted by MicVelo View Post
So I see the "will these fit my BBK?" question time after time after time and no one can say definitively yes or no unless they've run the EXACT COMBINATION.

But wait.... fret not, there's a solution to this!



AND.....



Just about every BBK mfgr offers a template (downloadable) that you can print/cut/compare to see HOW MUCH CLEARANCE is needed behind the wheel to clear calipers and rotors.

And conversely, if you already have BBK or sport brakes (Brembo, Akebono), you already have the dimensions that you need to measure to see if particular wheels will fit. (This is where the backspacing measurement makes sense.... about the only time it's really needed, frankly.)

Why resort to guesswork or the consensus from people who are guessing as well? Get out the steel rule and measure!!
thanks for the info! i was looking at the akebonos when i upgrade the wheels anyways so that was my major concern since i dont yet have them on the car it was more or less guess work for me.
cincysilvias14 is offline  
Old 03-28-2016, 10:41 AM
  #37  
cincysilvias14
Registered User
 
cincysilvias14's Avatar
 
Join Date: Jun 2013
Location: Cincinnati, OH
Posts: 249
Received 12 Likes on 9 Posts
Default

in hindsight this should really be a sticky post
cincysilvias14 is offline  
Old 03-29-2016, 07:11 PM
  #38  
SmoothZ
Senior Super Moderator
MY350Z.COM
iTrader: (13)
 
SmoothZ's Avatar
 
Join Date: Aug 2004
Location: Twin Cities, MN
Posts: 28,570
Received 1,786 Likes on 1,271 Posts
Default

Originally Posted by cincysilvias14 View Post
in hindsight this should really be a sticky post
Boom!

Agreed and done.
SmoothZ is offline  
Old 09-23-2016, 09:29 PM
  #39  
jcj02
Registered User
 
Join Date: Sep 2016
Location: Bowling green ky
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Default

Well duh
Geez thank you for helping me out here. I have been banging my head against Google looking at wheels and so up in the air wth I could actually get!!!
Great post sir
jcj02 is offline  
Old 10-20-2016, 04:53 PM
  #40  
MicVelo
350Z/370Z Tech Moderator
MY350Z.COM
Thread Starter
 
MicVelo's Avatar
 
Join Date: Oct 2014
Location: Northern California
Posts: 7,048
Received 1,983 Likes on 1,435 Posts
Default

Originally Posted by jcj02 View Post
Well duh
Geez thank you for helping me out here. I have been banging my head against Google looking at wheels and so up in the air wth I could actually get!!!
Great post sir
Thanks.

If it helps just one person select the right setup for their car (or better yet...avoid getting the wrong one ) then it was worth writing.
MicVelo is offline  

Thread Tools
Search this Thread

Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: