Scrub radius on original tire/wheel setup?, Anyone know the actual value? |
|
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. |
|
Scrub radius on original tire/wheel setup?, Anyone know the actual value? |
chmillman |
Oct 20 2024, 02:55 AM
Post
#1
|
Newbie Group: Members Posts: 38 Joined: 15-June 24 From: Switzerland Member No.: 28,183 Region Association: Europe |
Just out of curiosity...
Anyone know what the original designed-in scrub radius on a stock 914 with 5 1/2J x 15 wheels and 165R15 tires is? |
chmillman |
Oct 23 2024, 10:52 AM
Post
#2
|
Newbie Group: Members Posts: 38 Joined: 15-June 24 From: Switzerland Member No.: 28,183 Region Association: Europe |
Nobody?
|
930cabman |
Oct 23 2024, 11:26 AM
Post
#3
|
Advanced Member Group: Members Posts: 3,618 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States |
|
GregAmy |
Oct 23 2024, 12:23 PM
Post
#4
|
Advanced Member Group: Members Posts: 2,388 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
The definitions are out there.
But why do you care? Especially for a street car. It's not like you can do anything about it, especially on a strut suspension. If you want to keep it the same as stock, use stock size wheels (and offsets) and tires. |
chmillman |
Oct 23 2024, 02:08 PM
Post
#5
|
Newbie Group: Members Posts: 38 Joined: 15-June 24 From: Switzerland Member No.: 28,183 Region Association: Europe |
|
jd74914 |
Oct 23 2024, 03:17 PM
Post
#6
|
Its alive Group: Members Posts: 4,807 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
I made a Lotus Shark model of the stock geometry [while on my way to modifying the geometry]-I should be able to dig it out in the next few days and can output a plot for you.
|
Front yard mechanic |
Oct 23 2024, 08:39 PM
Post
#7
|
Senior Member Group: Members Posts: 1,219 Joined: 23-July 15 From: New Mexico Member No.: 18,984 Region Association: None |
The way 914s hug it’s got to be negative
|
anderssj |
Oct 24 2024, 05:51 AM
Post
#8
|
Dog is my copilot... Group: Members Posts: 1,699 Joined: 28-January 03 From: VA Member No.: 207 Region Association: MidAtlantic Region |
Wheel offset also affects scrub radius—moving wheel/tire centerline outboard increases scrub radius, while moving wheel/tire centerline inboard decreases scrub radius.
Changing from ARE alloy wheels (slightly less offset than OEM) to factory Pedrinis changed the feel of the car a little bit. A little less agile (“darty”), a little better holding a straight line on bumpy roads. |
Lo-Fi Version | Time is now: 25th October 2024 - 06:00 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |