Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Model
Stock
Porsche 911
991 : 2011- 12
997 : 2004- 66
996 : 1997-2005 45
993 : 1993-1998 10
964 : 1989-1993 4
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 0
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 2
Porsche Other Models
Classic : 1950-1965 1
Boxster : 1997- 17
Cayman : 2005- 13
Cayenne : 2003- 10
Macan : 2014- 1
Panamera : 2009- 3
912-914-924-928-944-968 4
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Body Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
M
Trainee


Joined: 19 Jun 2016
Posts: 67



PostPosted: Sun Apr 30, 2017 12:16 pm    Post subject: Correct width / offset for 18" wheels? Reply with quote

Hi guys!
Very, very quiet here lately....?

Question, having waited 4 months for my 964 Brembo GT brake kit to arrive from Italy I now realise that the front discs (if I want to use callipers too!) won't fit my 17" wheels. The front discs are a whopping 355mm diameter.

So, I need some 18" wheels. I've looked at BBS but I've heard that the proper 'race' split rims are magnesium and apart from being very expensive they are a ***** to restore (I want the centres to be black).

Anyone point me in the correct direction as far as correct widths/ offsets that will fit please?
I'm running at RS height, currently with 17" Porsche classics with 5mm spacers.

I don't want to have to roll the arches to make them fit. Oh.... the car is a 1990 C2 coupe narrow body.

Thanks in advance!

Mike Thumb
_________________
964 C2 Coupe Manual
997 C4S Coupe Manual
930 Turbo (Sold years ago for £21500 - Aaaargh!)

Last edited by M on Mon May 01, 2017 10:19 pm; edited 1 time in total
 



IMG_9386.JPG
 Description:
 Filesize:  619.91 KB
 Viewed:  2641 Time(s)

IMG_9386.JPG



IMG_9996.JPG
 Description:
 Filesize:  663.51 KB
 Viewed:  2641 Time(s)

IMG_9996.JPG


  
View user's profile Send private message
   
ras62
Montreal


Joined: 20 Jan 2012
Posts: 580
Location: Cheshire


PostPosted: Sun Apr 30, 2017 5:32 pm    Post subject: Reply with quote

355mm Surprised That is overkill on a 964. Does the kit come with adapters to fit the 964 hub?

Wheel size I would suggest 7.5J front with an offset of 50. Rear 9j and offset about 45. Even 18 inch wheels will be a close fit so I would try before you buy.
 
  
View user's profile Send private message
   
M
Trainee


Joined: 19 Jun 2016
Posts: 67



PostPosted: Sun Apr 30, 2017 8:30 pm    Post subject: Reply with quote

ras62 wrote:
355mm Surprised That is overkill on a 964. Does the kit come with adapters to fit the 964 hub?

Wheel size I would suggest 7.5J front with an offset of 50. Rear 9j and offset about 45. Even 18 inch wheels will be a close fit so I would try before you buy.


Thanks for the repy, I believe the kit comes with everything necessary...think I'll look up the info I have somewhere to find out what wheels Porsche fitted to their Cup cars.
Cheers Thumb
_________________
964 C2 Coupe Manual
997 C4S Coupe Manual
930 Turbo (Sold years ago for £21500 - Aaaargh!)
 
  
View user's profile Send private message
   
ras62
Montreal


Joined: 20 Jan 2012
Posts: 580
Location: Cheshire


PostPosted: Sun Apr 30, 2017 9:20 pm    Post subject: Reply with quote

The calipers are probably radial mounts but the 964 brakes are axial mouts. The kit should have adapters to overcome this.
http://www.944racing.de/wheelweights.php shows many of the Porsche wheels available including the ET or offset.
 
  
View user's profile Send private message
   
M
Trainee


Joined: 19 Jun 2016
Posts: 67



PostPosted: Sun Apr 30, 2017 10:06 pm    Post subject: Reply with quote

ras62 wrote:
The calipers are probably radial mounts but the 964 brakes are axial mouts. The kit should have adapters to overcome this.
http://www.944racing.de/wheelweights.php shows many of the Porsche wheels available including the ET or offset.

Thanks for the info. Thanks for the link to the chart... that's really useful.
_________________
964 C2 Coupe Manual
997 C4S Coupe Manual
930 Turbo (Sold years ago for £21500 - Aaaargh!)
 
  
View user's profile Send private message
   
ras62
Montreal


Joined: 20 Jan 2012
Posts: 580
Location: Cheshire


PostPosted: Mon May 01, 2017 8:37 am    Post subject: Reply with quote

Forgot to say the cup cars ran on 8" X 17 front ET 52 and 9.5" x 17 rear ET 68 with a 21mm spacer. Let us know how it all goes Thumb
 
  
View user's profile Send private message
   
Mondrian
Monza


Joined: 30 Apr 2014
Posts: 161



PostPosted: Mon May 01, 2017 12:28 pm    Post subject: Reply with quote

Offset of 50 on fronts and 50-55 on rears seems to be what folks on 18 seem to be aiming for. I have a set of MY02 5 spoke wheels with offset of 50 on front and 65 on rear which I am going to try with 15mm spacer on rear. Cup & RS cars seem to be able to run with less than 50 on rear but they have a slightly different suspension.

Am looking for a set of 17's as well as 964 brakes so pm if you want to sell.
 
  
View user's profile Send private message
   
M
Trainee


Joined: 19 Jun 2016
Posts: 67



PostPosted: Fri May 05, 2017 7:40 am    Post subject: Reply with quote

ras62 wrote:
Forgot to say the cup cars ran on 8" X 17 front ET 52 and 9.5" x 17 rear ET 68 with a 21mm spacer. Let us know how it all goes Thumb


Mondrian wrote:
Offset of 50 on fronts and 50-55 on rears seems to be what folks on 18 seem to be aiming for. I have a set of MY02 5 spoke wheels with offset of 50 on front and 65 on rear which I am going to try with 15mm spacer on rear. Cup & RS cars seem to be able to run with less than 50 on rear but they have a slightly different suspension.


Thanks chaps!
I'm on the hunt now and will let you know how it goes. Thumb
_________________
964 C2 Coupe Manual
997 C4S Coupe Manual
930 Turbo (Sold years ago for £21500 - Aaaargh!)
 
  
View user's profile Send private message
   
cableguy
Barcelona


Joined: 10 Sep 2007
Posts: 1301
Location: North Yorkshire


PostPosted: Fri May 05, 2017 8:16 am    Post subject: Reply with quote

I have a set of 18" MY02's at the refurbishers that i'm thinking of selling. Gloss Black powdercoat with a thin silver painted lip. PM anytime if interested.

Loving the BBK. Thumb

C.
_________________
Pork!
 
  
View user's profile Send private message
   
kevsta
Silverstone


Joined: 16 Mar 2012
Posts: 141
Location: Nw london


PostPosted: Mon May 08, 2017 6:49 pm    Post subject: Reply with quote

That big brake kit looks stopalicious!
 
  
View user's profile Send private message
   
deutschland-dobson
Indianapolis


Joined: 23 Apr 2008
Posts: 2453
Location: NE England


PostPosted: Mon May 08, 2017 7:05 pm    Post subject: Reply with quote

Very jealous of those brakes! Will look just the job!

Keep us posted on fitting Smile

Chris
_________________
Porsche 911 (964) C4 - Project RED - Outlaw4
Guards Red & Linen, Custom Leather, BBS LM Split-rims, H&R Coilovers, Cleaned Bodywork, 90s audio instal...
 
  
View user's profile Send private message
   
M
Trainee


Joined: 19 Jun 2016
Posts: 67



PostPosted: Mon May 08, 2017 8:01 pm    Post subject: Reply with quote

cableguy wrote:
I have a set of 18" MY02's at the refurbishers that i'm thinking of selling.

Thanks for the offer, I like that style but am still in BBS mode at the moment....😀
kevsta wrote:
That big brake kit looks stopalicious!

I can't wait to get them on, I've been really busy so haven't really looked too hard to get some wheels... I guess I better do that first!
_________________
964 C2 Coupe Manual
997 C4S Coupe Manual
930 Turbo (Sold years ago for £21500 - Aaaargh!)
 
  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 Hours
Page 1 of 1

 
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum