Notices
996 Forum 1999-2005
Sponsored by:

Any downsides to wheel spacers (15mm)?

Thread Tools
 
Search this Thread
 
Old 08-11-2021, 05:35 PM
  #16  
e30rapidic
Rennlist Member
 
e30rapidic's Avatar
 
Join Date: Mar 2017
Location: Raleigh, North Carolina
Posts: 782
Received 546 Likes on 283 Posts
Default

15 mm all around on my C4S...
The following users liked this post:
peterp (08-11-2021)
Old 08-11-2021, 11:20 PM
  #17  
barbancourt
Burning Brakes
 
barbancourt's Avatar
 
Join Date: Sep 2014
Posts: 849
Received 504 Likes on 277 Posts
Default

I have 15mm spacers at all four corners and I'm lowered to the top of the tire with no wheel gap. Aligned to factory specs. No rubbing, and the car handles great.
The following users liked this post:
JP_Gervs (08-14-2021)
Old 08-12-2021, 01:16 AM
  #18  
Breakthru
Rennlist Member
 
Breakthru's Avatar
 
Join Date: Feb 2009
Location: SF Bay Area
Posts: 325
Received 327 Likes on 131 Posts
Default

I have 15mm on rears, no issues. Drive great.
The following users liked this post:
JP_Gervs (08-14-2021)
Old 08-12-2021, 08:36 AM
  #19  
dporto
Rennlist Member
 
dporto's Avatar
 
Join Date: Oct 2014
Location: L.I. NY
Posts: 6,789
Received 1,169 Likes on 797 Posts
Default

Originally Posted by peterp
Thanks for feedback. Is ti better to have narrower on the fronts -- (e.g. 15 mm rear / 10 mm front) instead of 15mm front and rear?
I’ve 15mm ECS spacers front and rear. No problems with either set of wheels (summers or winters)...
The following users liked this post:
JP_Gervs (08-14-2021)
Old 08-13-2021, 10:07 PM
  #20  
tsaint117
Intermediate
 
tsaint117's Avatar
 
Join Date: Jun 2021
Posts: 46
Received 20 Likes on 12 Posts
Default

For my NB C2, I decided on 7mm front and 10mm rears. Has an OEM+ look to it that I was looking for.
The following users liked this post:
JP_Gervs (08-14-2021)
Old 08-14-2021, 08:41 AM
  #21  
JP_Gervs
Rennlist Member
 
JP_Gervs's Avatar
 
Join Date: Jun 2021
Posts: 287
Received 178 Likes on 98 Posts
Default

Originally Posted by barbancourt
I have 15mm spacers at all four corners and I'm lowered to the top of the tire with no wheel gap. Aligned to factory specs. No rubbing, and the car handles great.
Originally Posted by Breakthru
I have 15mm on rears, no issues. Drive great.
Originally Posted by dporto
I’ve 15mm ECS spacers front and rear. No problems with either set of wheels (summers or winters)...
Originally Posted by tsaint117
For my NB C2, I decided on 7mm front and 10mm rears. Has an OEM+ look to it that I was looking for.

anyone got pics?!
Old 08-14-2021, 10:07 AM
  #22  
dporto
Rennlist Member
 
dporto's Avatar
 
Join Date: Oct 2014
Location: L.I. NY
Posts: 6,789
Received 1,169 Likes on 797 Posts
Default


This is with winter wheels/tires (Pirelli Soto-zero II) they are not the correct/stock sizes (taller side walls and a little wider - sorry not sure of the sizes off hand), but no problems with rubbing. KW V3 suspension.


Summer wheels/tires - Michelin ps4s correct/stock sizes (18”)
Old 08-14-2021, 02:39 PM
  #23  
Mike Murphy
Rennlist Member
 
Mike Murphy's Avatar
 
Join Date: Aug 2006
Location: Chicago, IL
Posts: 8,997
Received 1,760 Likes on 1,096 Posts
Default

Nobody mentioned the biggest downside of all: vibration! Crappy spacers that don’t fit perfectly and precisely can easily cause a vibration while driving. Many people have posted about this, only to have to remove and scrap their spacers altogether. Really poorly constructed spacers can break, and if you don’t use the proper bolts, your wheel could fall off, lol.
Old 08-14-2021, 06:12 PM
  #24  
peterp
Drifting
Thread Starter
 
peterp's Avatar
 
Join Date: Jun 2005
Location: NJ/NY area
Posts: 2,152
Received 770 Likes on 466 Posts
Default

Originally Posted by zbomb
Come on over to the dark side… women are better looking, beer is colder and grass is greener.
Well, I'm here to report that the dark side is looking very bright. I ordered a pair of 15mm spacers. Instead of putting them on one axle, I installed one on the front and the other on the rear so I could evaluate whether to use 15mm all around. I just took a test drove -- drives the same, but looks a LOT better. I didn't realize how much the inset wheels affect the overall look of the car. I am very happy with the decision and just ordered a 2nd pair of 15mm's for the driver's side.

I used Venom spacers and the quality is very high. The gloss black aluminum spacer is made in the US, and the bolts that come with them are made in Germany. I measured the weight of the extended lug nuts, and all of them weigh exactly 128 grams. The (15mm shorter) original lug bolts weigh 101 grams. That's about the weight difference you'd expect for the length difference, so I think they are made of the same metal (or at least very close). The 15mm spacer itself weighed 765 grams. The total weight difference per wheel is 5 x 27 grams for the lug bolts + 765 grams for the spacer, so a total of 900 grams or 1.98 lbs per wheel. I normally hate adding to wheel weight, but because all of the added weight is centered at the hub, I don't think it changes driving feel at all.

Can't wait for the other pair to arrive so I can do the other side.
The following users liked this post:
zbomb (08-14-2021)
Old 08-14-2021, 10:49 PM
  #25  
zbomb
Race Car
 
zbomb's Avatar
 
Join Date: Dec 2019
Location: Massachusetts
Posts: 3,877
Received 4,295 Likes on 1,813 Posts
Default

Originally Posted by peterp
Well, I'm here to report that the dark side is looking very bright. I ordered a pair of 15mm spacers. Instead of putting them on one axle, I installed one on the front and the other on the rear so I could evaluate whether to use 15mm all around. I just took a test drove -- drives the same, but looks a LOT better. I didn't realize how much the inset wheels affect the overall look of the car. I am very happy with the decision and just ordered a 2nd pair of 15mm's for the driver's side.

I used Venom spacers and the quality is very high. The gloss black aluminum spacer is made in the US, and the bolts that come with them are made in Germany. I measured the weight of the extended lug nuts, and all of them weigh exactly 128 grams. The (15mm shorter) original lug bolts weigh 101 grams. That's about the weight difference you'd expect for the length difference, so I think they are made of the same metal (or at least very close). The 15mm spacer itself weighed 765 grams. The total weight difference per wheel is 5 x 27 grams for the lug bolts + 765 grams for the spacer, so a total of 900 grams or 1.98 lbs per wheel. I normally hate adding to wheel weight, but because all of the added weight is centered at the hub, I don't think it changes driving feel at all.

Can't wait for the other pair to arrive so I can do the other side.
Insert Darth Vader laugh HERE...

Nice to hear you dig it, I believe the original set I used were the Venom ones off Amazon - I sold them with the original wheels but like you, was happy with the quality.

I think the ECS are a notch above, but only went with them on the current setup due to needing a specific size in a hurry and they were the only option.

Look forward to seeing some pics when you get them all sorted - 911's on 17's are cool.
Old 08-15-2021, 12:50 AM
  #26  
pdxmotorhead
Three Wheelin'
 
pdxmotorhead's Avatar
 
Join Date: May 2019
Location: USA/Oregon
Posts: 1,695
Received 399 Likes on 297 Posts
Default

spacer = new wheel with different offset ,, If the spacer is inner and outer hub centric.. if you go over 15 you should absolutely switch to studs, and upsize IMHO..
Old 08-15-2021, 03:19 PM
  #27  
peterp
Drifting
Thread Starter
 
peterp's Avatar
 
Join Date: Jun 2005
Location: NJ/NY area
Posts: 2,152
Received 770 Likes on 466 Posts
Default

Difference in total length of the lug bolts ...





Extended lug nuts are 128 grams each versus 101


15mm Spacer weighs 765 grams




Not the best photos, but driver side is original and passenger side has spacers (steering wheel is slightly turned ...)

Old 08-15-2021, 04:02 PM
  #28  
Mike Murphy
Rennlist Member
 
Mike Murphy's Avatar
 
Join Date: Aug 2006
Location: Chicago, IL
Posts: 8,997
Received 1,760 Likes on 1,096 Posts
Default

Wow, 765 grams per wheel (1.69 lbs) seems non-trivial.
Old 08-15-2021, 04:14 PM
  #29  
peterp
Drifting
Thread Starter
 
peterp's Avatar
 
Join Date: Jun 2005
Location: NJ/NY area
Posts: 2,152
Received 770 Likes on 466 Posts
Default

Originally Posted by Mike Murphy
Wow, 765 grams per wheel (1.69 lbs) seems non-trivial.
I think if the weight was distributed on the outside of the wheel, you'd feel it. Since all the weight is on the hub, you don't feel it at all (at least I don't).
Old 08-15-2021, 04:34 PM
  #30  
plpete84
Drifting
 
plpete84's Avatar
 
Join Date: Jul 2020
Location: Washington DC
Posts: 2,107
Received 1,844 Likes on 934 Posts
Default

Makes me want to pull my studs and nut combo to see what the weight difference is.
The following users liked this post:
peterp (08-15-2021)


Quick Reply: Any downsides to wheel spacers (15mm)?



All times are GMT -3. The time now is 06:07 PM.