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
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 18
997 : 2004- 74
996 : 1997-2005 46
993 : 1993-1998 6
964 : 1989-1993 5
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 1
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 0
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 15
Cayman : 2005- 19
Cayenne : 2003- 8
Macan : 2014- 3
Panamera : 2009- 1
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 & 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
JS1500
Silverstone


Joined: 12 Apr 2017
Posts: 148
Location: Aberdeen


PostPosted: Tue May 02, 2017 4:18 pm    Post subject: 275/35/18 on the back of a 996? Reply with quote

Hello,

Quick question...

Is there any reason why I can't/shouldn't fit 275/35/18 rears to my 996.1 C4?

The fronts are 235/40/18 and the rears are currently 285/30/18.

The wheels are Sport Classic II.
The current tyres are N rated PS2 but I'd like to go for the PS4...

Thanks! Thumb
 
  
View user's profile Send private message
   
jerzybondov
Silverstone


Joined: 27 Apr 2015
Posts: 149



PostPosted: Tue May 02, 2017 5:04 pm    Post subject: Reply with quote

Have you gone up a size on the fronts already? OEM size for the front on a C2 is 225/40/18.

Generally you don't want different sizes front and back on a 4x4, but if the fronts have gone up the difference might be in tolerance. I don't know what that tolerance is though...
 
  
View user's profile Send private message
   
JS1500
Silverstone


Joined: 12 Apr 2017
Posts: 148
Location: Aberdeen


PostPosted: Tue May 02, 2017 7:29 pm    Post subject: Reply with quote

It's a C4 and I think 235 was standard fitment?
 
  
View user's profile Send private message
   
Disco
Estoril


Joined: 13 May 2008
Posts: 3836
Location: Hertfordshire

2010 Porsche 997 GT3

PostPosted: Tue May 02, 2017 8:23 pm    Post subject: Reply with quote

JS1500 wrote:
It's a C4 and I think 235 was standard fitment?


Nope - only on the GT2 and gen 2 GT3 with the 996. Even the Turbo had a 225 front as standard.
[Though that said: moving to GT3 sizes is not exactly an uncommon practice].
_________________
Colin

Black 997 GT3 3.8 CS - Acquired for the 2012 season and beyond
Black 996 GT3 Mk2 - Gone, but will never be forgotten
 
  
View user's profile Send private message
   
JS1500
Silverstone


Joined: 12 Apr 2017
Posts: 148
Location: Aberdeen


PostPosted: Wed May 03, 2017 7:25 am    Post subject: Reply with quote

Hmm, when I put my reg in to one of the tyre websites it shows 235/40 and 285/30...?

Anyway, I'd rather go slightly narrower all round for a bit more chuckability, and slightly taller sidewalls at the rear.

Anyone have 225/40 and 275/35 on a 996 C4?

Thanks for any help.
 
  
View user's profile Send private message
   
Disco
Estoril


Joined: 13 May 2008
Posts: 3836
Location: Hertfordshire

2010 Porsche 997 GT3

PostPosted: Wed May 03, 2017 3:09 pm    Post subject: Reply with quote

JS1500 wrote:
Hmm, when I put my reg in to one of the tyre websites it shows 235/40 and 285/30...?


Better to go straight to the official source : http://www.porsche.com/uk/accessoriesandservice/classic/tyreapproval/ Thumb
_________________
Colin

Black 997 GT3 3.8 CS - Acquired for the 2012 season and beyond
Black 996 GT3 Mk2 - Gone, but will never be forgotten
 
  
View user's profile Send private message
   
JS1500
Silverstone


Joined: 12 Apr 2017
Posts: 148
Location: Aberdeen


PostPosted: Wed May 03, 2017 4:03 pm    Post subject: Reply with quote

Disco wrote:
JS1500 wrote:
Hmm, when I put my reg in to one of the tyre websites it shows 235/40 and 285/30...?


Better to go straight to the official source : http://www.porsche.com/uk/accessoriesandservice/classic/tyreapproval/ Thumb


Thanks Disco.
Looks like my car 'should' have 225/40 ZR18 and 265/35 ZR18...
 
  
View user's profile Send private message
   
JS1500
Silverstone


Joined: 12 Apr 2017
Posts: 148
Location: Aberdeen


PostPosted: Wed May 03, 2017 4:17 pm    Post subject: Reply with quote

That means a full set of PS4 will be £540 fitted at Kwik-Fit.

Can't say fairer than that really... Except for the 19" Pilot SuperSports I put on my Aston which were ~£650 fitted (eventually, once I found a place willing to do some 'artistic' jacking of the car, the jacking points on the V8 Vantage and DB9 are ridiculous)!

Odd because reading through old posts (circa 2015) people were saying that £720 for a full set of fitted Michelins was a bargain. Have tyres really gone down in price over the last two years?
 
  
View user's profile Send private message
   
jerzybondov
Silverstone


Joined: 27 Apr 2015
Posts: 149



PostPosted: Wed May 03, 2017 5:34 pm    Post subject: Reply with quote

JS1500 wrote:
That means a full set of PS4 will be £540 fitted at Kwik-Fit.

Can't say fairer than that really... Except for the 19" Pilot SuperSports I put on my Aston which were ~£650 fitted (eventually, once I found a place willing to do some 'artistic' jacking of the car, the jacking points on the V8 Vantage and DB9 are ridiculous)!

Odd because reading through old posts (circa 2015) people were saying that £720 for a full set of fitted Michelins was a bargain. Have tyres really gone down in price over the last two years?


N-rated tyres cost more than non N-rated tyres (i.e. PS2 N-rated cost more than PS4), that will be the bulk of the cost difference.
 
  
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 cannot attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum