Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

18" Wheels experience question

Thread Tools
 
Search this Thread
 
Old Feb 1, 2011 | 03:48 AM
  #31  
Tony's Avatar
Tony
Addict
Lifetime Rennlist
Member
20 Year Member
 
Joined: May 2001
Posts: 14,697
Likes: 598
From: Las Vegas
Default

They look great (depending on style)...they can be heavier..the car will accelerate slower...things will start to rattle over time due to the harsher ride.

But i love my "twists"..so easy to clean yet classic at the same time. Original Phone dial in 18 would be th $hit!
Reply
Old Feb 1, 2011 | 08:24 AM
  #32  
jeff spahn's Avatar
jeff spahn
Rennlist Member
15 Year Member
 
Joined: Nov 2009
Posts: 8,659
Likes: 426
From: Dubuque, IA
Default

Originally Posted by pcar928fan
I agree with Dan, you take a REALLY NICE and well kept 928 (and year!) and put 18" rims on it and folks will probably think the damn thing is new...

When Dan H (S4ordie) and Tony are finished with their cars those things not only will LOOK new, they will pretty much BE NEW!!! They are going to look FANTASTIC! Both of them!
And don't forget Rob with the beautiful stroker motor. That has to count as new.
Reply
Old Feb 1, 2011 | 08:53 AM
  #33  
LightStriker's Avatar
LightStriker
Pro
 
Joined: Jun 2008
Posts: 695
Likes: 2
From: Québec, Québec, Canada
Default

I went from 16x7? to 18x8 and 18x10.
Surprisingly, the new rims are slightly lighter then the phone dial. But not enough to make a difference.

So:
Handling: +
Smoothness: ---
Traction: ++
Look: +++

In my case, the ride got quite rougher. For a familly car or a daily driver, I think I would probably prefer the 16" for the smoothness. But since it's my fun project car, I didn't regret the 18".
Reply
Old Feb 1, 2011 | 01:38 PM
  #34  
White Lightnin''s Avatar
White Lightnin'
Rennlist Member
Veteran: Army
15 Year Member
 
Joined: Jun 2009
Posts: 3,067
Likes: 19
From: Somewhere, NC
Default

Originally Posted by Speedtoys
Which car are those goin on Tony??
Really, you don't know about the 'Teal Deletion GTS' ?!?

Originally Posted by 77tony
Went with Continental Extremes 245/40ZR 18's on the front and 285/35ZR's in the rear, and mounted them on Fikse FM5's. 8.5" rims front, and 11.0" rims rear. These tires are the quietest of the pack according to Tire Rack, and are .9" taller than OEM in the rear and .6" taller than OEM in the front. The speedo might be off a tad, but the ride will be better with that extra sidewall. If your going to spend the $$, go with the 18's, they look great on the car. T
Tony, you WILL want at least 295's on those 11" rear wheels... trust me. Maybe even 305's or 315's with those wide GTS hips. Ask me how I know.


>>Mine with 295/30/18 PS2's on 18x11" rears and 225/40/18 PS2's on 18x8" fronts...
Attached Images
File Type: jpg
10-10-09[A][RL].jpg (79.9 KB, 136 views)
File Type: jpg
10-10-09[D].JPG (83.5 KB, 134 views)

Last edited by White Lightnin'; Feb 1, 2011 at 03:22 PM.
Reply
Old Feb 1, 2011 | 02:52 PM
  #35  
dprantl's Avatar
dprantl
Race Car
 
Joined: Dec 2003
Posts: 4,477
Likes: 5
From: Atlanta, GA
Default

Originally Posted by 928porschepatrick
Yes... i have new shocks, Koni 8240 1085(86)

What to do with the stock springs, Replace them??? to........?
It really depends on what you want/prefer. Some people find stock springs too soft, others do not. For example, many people swear by the Bilstein/Eibach shock/spring combo, but I have heard people say it is too harsh. I think you will need to experiment with what works best for you, keeping in mind on how you will use the car.

Dan
'91 928GT S/C 475hp/460lb.ft
Reply
Old Feb 1, 2011 | 03:04 PM
  #36  
pcar928fan's Avatar
pcar928fan
Nordschleife Master
 
Joined: Apr 2008
Posts: 9,337
Likes: 4
From: Austin, TX
Default

Barry, I just noticed you are missing your front spoiler...did you have one on it that was part of the kit and it came off or are you waiting on one...I vaguely remember a story about this...
Reply
Old Feb 1, 2011 | 03:14 PM
  #37  
White Lightnin''s Avatar
White Lightnin'
Rennlist Member
Veteran: Army
15 Year Member
 
Joined: Jun 2009
Posts: 3,067
Likes: 19
From: Somewhere, NC
Default

Originally Posted by pcar928fan
Barry, I just noticed you are missing your front spoiler...did you have one on it that was part of the kit and it came off or are you waiting on one...I vaguely remember a story about this...
Hi James... I got the car sans front spoiler. It took a couple of months before I realized there was supposed to be one & what it looked like!

But since I was going to do the AIR kit, I decided to not get a stock one. The AIR front valence was on my car for a few months until little spider-web cracks started showing up due to how low the thing was at the front edge. The back of the valence was stock height -even had the mounting points built in for the undertray and ducting for brake cooling- but that front edge caught everything ... speed bumps, parking stops, my driveway, etc. They work fine for race cars though -Tom Falkenburg has one on his yellow 'big bird' racer.

Now, I still don't have a factory front spoiler -I have a splitter from a 996 GT3 mounted below the bumper cover. I know I am risking the lower bits on the engine, but after what I did to the AIR valence I am a little more careful what I drive over.

BTW James, don't you need another '94 GTS? Seen that thread on the midnight blue one for $38k ?!? [edit: I see you've posted in that thread... it's a beauty! I wish I had that kinda' coin laying around!]
Reply
Old Feb 1, 2011 | 03:29 PM
  #38  
Speedtoys's Avatar
Speedtoys
Addict
Rennlist Member
15 Year Member
 
Joined: Sep 2010
Posts: 13,583
Likes: 1,044
From: Boulder Creek, CA
Default

Originally Posted by White Lightnin'
Really, you don't know about the 'Teal Deletion GTS' ?!?



Tony, you WILL want at least 295's on those 11" rear wheels... trust me. Maybe even 305's or 315's with those wide GTS hips. Ask me how I know.


>>Mine with 295/30/18 PS2's on 18x11" rears and 225/40/18 PS2's on 18x8" fronts...
Ok..how do you know?
Reply
Old Feb 1, 2011 | 03:57 PM
  #39  
Randy V's Avatar
Randy V
Addict
Lifetime Rennlist
Member
25 Year Member
 
Joined: Jun 2000
Posts: 40,491
Likes: 140
From: Insane Diego, California
Default

18" Carrera 996 Light Weights (edited) -

I'll say no more.




Reply
Old Feb 1, 2011 | 04:01 PM
  #40  
cali4sun's Avatar
cali4sun
Burning Brakes
15 Year Member
 
Joined: May 2009
Posts: 923
Likes: 2
From: Pismo Beach, CA
Default

Originally Posted by Randy V
18" Carrera IIIs -

I'll say no more.
+1, what he said


'89 S4 GP White/Black
'76 912E Silver/Black
Reply
Old Feb 1, 2011 | 04:08 PM
  #41  
White Lightnin''s Avatar
White Lightnin'
Rennlist Member
Veteran: Army
15 Year Member
 
Joined: Jun 2009
Posts: 3,067
Likes: 19
From: Somewhere, NC
Default

Originally Posted by Speedtoys
Ok..how do you know?
I too, took the recommendation of the tire shop and mounted 285's on my 11" wheels at first.

Going by the numbers it should have been fine: 285mm=11.25".

However when the tires were mounted, the sidewalls looked like zits waiting to be popped, offered NO protection to the wheels and the tread looked visually narrower than the wheel.

It just plain looked ridiculous and I'm glad I didn't drive the car that way -I returned them and got 295's instead.

But since Tony has a GTS, he can probably go 305's or 315's without any clearance issues.
Reply
Old Feb 1, 2011 | 04:28 PM
  #42  
Speedtoys's Avatar
Speedtoys
Addict
Rennlist Member
15 Year Member
 
Joined: Sep 2010
Posts: 13,583
Likes: 1,044
From: Boulder Creek, CA
Default

Originally Posted by White Lightnin'
I too, took the recommendation of the tire shop and mounted 285's on my 11" wheels at first.

Going by the numbers it should have been fine: 285mm=11.25".

However when the tires were mounted, the sidewalls looked like zits waiting to be popped, offered NO protection to the wheels and the tread looked visually narrower than the wheel.

It just plain looked ridiculous and I'm glad I didn't drive the car that way -I returned them and got 295's instead.

But since Tony has a GTS, he can probably go 305's or 315's without any clearance issues.
Depends how you measure.

Your best performance is where tread matches the wheel width, which is NOT the external width of the wheel.

285 would be the..generally speaking, best size.


So..they were right, by the numbers at least.
Reply
Old Feb 1, 2011 | 04:38 PM
  #43  
whiteNSXs's Avatar
whiteNSXs
Burning Brakes
15 Year Member
 
Joined: Aug 2009
Posts: 901
Likes: 15
From: San Francisco
Thumbs up

Originally Posted by Randy V
18" Carrera IIIs -

I'll say no more.




Beautiful wheels. I have the same wheels as yours. These are the Carrera Lightweights. Carrera IIIs are something else with squarer spokes.
Steve
Reply
Old Feb 1, 2011 | 05:05 PM
  #44  
928porschepatrick's Avatar
928porschepatrick
Thread Starter
Instructor
 
Joined: Jun 2010
Posts: 215
Likes: 0
From: Leeuwarden,Netherlands
Default

The 18" Carrera IIIs are really a big plus for the 928
pictures says more than words
Reply
Old Feb 1, 2011 | 05:48 PM
  #45  
Leon Speed's Avatar
Leon Speed
Addict
Lifetime Rennlist
Member
 
Joined: Jul 2007
Posts: 4,539
Likes: 4
From: Germany
Default

Originally Posted by 928porschepatrick
Yes... i have new shocks, Koni 8240 1085(86)

What to do with the stock springs, Replace them??? to........?
Since my springs were pretty "springy" and the shocks were "schocky" I just replaced the shocks and left the springs alone. I did check however if I had the stiffest springs available, which was the case.
Reply



All times are GMT -3. The time now is 07:01 PM.