 Wheel Offest |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| STL914 |
 May 28 2007, 08:18 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,180 Joined: 22-October 03 From: O'Fallon, MO Member No.: 1,271 Region Association: Upper MidWest  |
Calling all wheel gurus!
What is the deepest wheel back spacing that can be used on a 914 without encountering any interference issues? |
   |
 
|
| BahnBrenner914 |
May 28 2007, 10:37 PM
Post
#2
|
|
The girl is gone and all I have now is a beat-up teener Group: Members Posts: 301 Joined: 22-May 04 From: Gig Harbor and University Place, WA :: School in Angola, IN :: girlfriend in Sarasota, FL Member No.: 2,094 Region Association: None |
I dont know the offset, but what size tires and wheels your planning needs to be known. I know with stock wheels, you can still fit 205's (?) and they almost (or do... hmmm) rub. So just an FYI to give the wheel/tire gurus a head's up on your tire/wheel ideas.
|
|
|
|
| Gint |
May 29 2007, 09:10 AM
Post
#3
|
|
Mike Ginter Group: Admin Posts: 16,071 Joined: 26-December 02 From: Denver CO. Member No.: 20 Region Association: Rocky Mountains  |
Go read my superlight wheel thread. There is some very good info in there. Teach a man to fish sort of stuff.
http://www.914world.com/bbs2/index.php?showtopic=69869& |
|
|
|
| Aaron Cox |
May 29 2007, 09:18 AM
Post
#4
|
|
Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
(IMG:style_emoticons/default/agree.gif)
but... it also depends on camber...... alot of negative camber gets you into the inner fender in the rear.... but will clear the outer lip. |
|
|
|
| J P Stein |
May 29 2007, 10:07 AM
Post
#5
|
|
Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
The most backset I could use up front was 5 3/8 in but....
A couple things pop up. I had to use a 1/8 inch spacer on a 5 1/2 backspace wheel to clear the brake caliper. Not all wheels are designed the same on the inner face. Mine were basicly flat rather than concave like Fuch. My wheels & tires were the same width.....the wheel rim is actually a touch wider. I had to remove the dust covers on the front shocks and I was running -.5 camber. In back, 5 inches backspace was the most...again with -.5 camber & the same tires. The wheels are 10 inches wide as were the tires....slicks, actually. In most wheel tire set-ups, the tire is the widest thing and thus the clearance required is not to the wheel, but the tire. With 7 inch wheel and a 205 cross section tire, the tire will bulge about a half inch past the wheel both inside & out....more with an R spec tire. Like Aaron says, camber also enters into the equation. -2 camber works out to about 3/8 inch on a 24 inch dia tire and that's at static ride height. As the suspension compresses, the negative camber at both ends of the car increases about .5 deg (SWAG) per inch of wheel travel. I run wheel/ combinations thru the entire range of suspension travel (lock to lock up front see pic) and check clearances inside & out. I like at least 3/8 clearance inside (more is better) as tires deflect under hard cornering. Attached thumbnail(s) 
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 12:52 PM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.