18" wheel offsets
Thread Starter
Pro
Joined: Mar 2005
Posts: 533
Likes: 1
From: Kirtland (Cleveland), OH USA
18" wheel offsets
I had posted earlier that I'm looking for an 18" turbo twist to replace the one that was damaged. Well, surprise- I'm running an aftermarket wheel, that can't be matched (not quite a "twist"). So I started looking here on RL and eBay for the optimum (read cheapest) solution to replace all 4. I'm confused about offsets- e.g., ET52 (or ET 50) front and ET65 (or ET50) rear. I can understand it from an aftermkt/upgrade position, but if I'm just looking for cheap, used OEM wheels for a 993(C4), how will this come into play? I realize that I'm trying to avoid rubbing, but the examples above were taken from 993/996 wheel descriptions.
I hate to sound stupid, but I've never given much thought to the process, until now, when I'm stuck.
Any pointers as to what might/might not work would be appreciated.
thanks!
I hate to sound stupid, but I've never given much thought to the process, until now, when I'm stuck.
Any pointers as to what might/might not work would be appreciated.
thanks!
Thread Starter
Pro
Joined: Mar 2005
Posts: 533
Likes: 1
From: Kirtland (Cleveland), OH USA
Thanks Jean-Pierre. I just hate to seem so lackadaisical about the whole wheel porcess, since I was happy with the ones I had. I could just easily go to Tire Rack and order my replacement tires, etc.
Now that I can't just swap out a wheel, I have to find a set of used ones that work.
cheers,
Now that I can't just swap out a wheel, I have to find a set of used ones that work.
cheers,
Rennlist Member
Joined: Nov 2002
Posts: 12,229
Likes: 104
From: Chicago
Just to add, under certain conditions you can get away with rear offsets that are less than 65. For example, you can run ET54 if you stick with 265 tires and don't lower your car too much. Here's how I view it: 285 rear tires are about the widest you can go with proper offsets (ET65) on a lowered car without rubbing on the outside. So if your wheels are ET60, then you could only run 275 tires. You get the idea. Plus, another 1deg of neg camber will save you 5mm.
Last edited by TheOtherEric; Mar 29, 2006 at 09:56 PM. Reason: typos in tire widths
Addict
Rennlist Member
Rennlist Member
Joined: Oct 2003
Posts: 2,728
Likes: 6
From: Los Gatos / Tahoe, CA
Here are the NB offsets and part numbers for the hollow spoke wheels:
Hollow spoke "Technology" wheels:
8 x 18 - 993.362.136.00 - ET52 - 19.95 lb (front)
10 x 18 - 993.362.140.01 - ET65 - 23.36 lb (narrow body rear)
Hollow spoke "Technology" wheels:
8 x 18 - 993.362.136.00 - ET52 - 19.95 lb (front)
10 x 18 - 993.362.140.01 - ET65 - 23.36 lb (narrow body rear)
Rennlist Member
Joined: Nov 2002
Posts: 12,229
Likes: 104
From: Chicago
Originally Posted by pchak
Eric,
I'm a little confused, since my tires are 265/35/18 in the rear, and 225/40/18 in front.
thanks,
I'm a little confused, since my tires are 265/35/18 in the rear, and 225/40/18 in front.
thanks,
I hope that helps.
Last edited by TheOtherEric; Mar 29, 2006 at 03:56 PM.
Trending Topics
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Jan 2004
Posts: 4,495
Likes: 0
From: Mount Prospect, IL
people get away with putting boxster wheels on their 993 (heck, I've done it before myself) but other people (I'd guess based on suspension and camber) say they rub if they try to put back boxster wheels on their 993.
I met a guy who put 45mm offset 996 turbo wheels on his NA 993 -- wheels stuck out a little in back for 'poke' but he was at stock ride height and could get away with it.. I didn't care for the look but each to their own.
I met a guy who put 45mm offset 996 turbo wheels on his NA 993 -- wheels stuck out a little in back for 'poke' but he was at stock ride height and could get away with it.. I didn't care for the look but each to their own.
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Verdad Gallardo
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Guntherwerks' Final Speedster Creation Is the Ultimate Porsche Restomod
Verdad Gallardo
10 Reasons I Hate Going to the Porsche Dealership (& the 1 Reason I Stay)
Joe Kucinski
Porsche Shakes Up The Nürburgring Lap Record Table Once Again
Verdad Gallardo
6 Ways the Porsche 911 GT3 S/C Redefines Performance
Joe Kucinski
10 Wildest Homologation Specials Porsche Ever Sold
Verdad Gallardo
Super Rare RUF BTR III Comes Out of Hibernation, Looking For a New Home
Verdad Gallardo
10 Porsche Opinions That Can Start a Fight
Joe Kucinski
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Joined: Jan 2005
Posts: 12,346
Likes: 4
From: New Jersey
Originally Posted by pchak
Eric,
I'm a little confused, since my tires are 265/35/18 in the rear, and 225/40/18 in front.
thanks,
I'm a little confused, since my tires are 265/35/18 in the rear, and 225/40/18 in front.
thanks,
Rennlist Member
Joined: Nov 2002
Posts: 12,229
Likes: 104
From: Chicago
Originally Posted by Bull
I'm sure Eric meant to type "285" and "275", unless he is trying to put you on 356 wheels/tires!
I'll get that fixed. 
Rennlist Member
Joined: Jan 2003
Posts: 159
Likes: 4
From: Troy, Idaho
I've got a set of RH AG Cup wheels in near perfect condition that I'll sell for $1000 plus shipping from Idaho. They came off my 96 NB Coupe. The offsets are front 45mm and rear 54mm. PM me and I can send pictures if you're interested.
Thread Starter
Pro
Joined: Mar 2005
Posts: 533
Likes: 1
From: Kirtland (Cleveland), OH USA
Rob,
Thanks for the offer, but I was looking for 52/65 offsets. I've also been searching for (one) Cup replica to replace the broken wheel (now that I know what it's called). I've looked all over and can only find 16 and 17 inch versions, instead of the 18 that I need. Why have these become so rare?
If anybody knows of one p[lease let me know. I'll post on the "wanted" board as well.
thanks!
Thanks for the offer, but I was looking for 52/65 offsets. I've also been searching for (one) Cup replica to replace the broken wheel (now that I know what it's called). I've looked all over and can only find 16 and 17 inch versions, instead of the 18 that I need. Why have these become so rare?
If anybody knows of one p[lease let me know. I'll post on the "wanted" board as well.
thanks!
Rennlist Member
Joined: Nov 2002
Posts: 12,229
Likes: 104
From: Chicago
Bill- FYI, Rob's wheels (RH Cup AG) will indeed fit narrow body cars, despite the offsets. I ran these on my prior 993. The only real drawback is you're limited to 265 rear tires, which is the recommended size anyways. And you might have a problem if you lower dramatically, but it's not a certainty. My current Speedlines are also ET54 IIRC. The Cup AG are gorgeous and $1000 is a good price FWIW.
