Welcome to the North American Subaru Impreza Owners Club Saturday December 16, 2017
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
Click here to visit TireRack
Tire & Wheel Forum sponsored by The Tire Rack

Losing traction? Need new tires?
Click here to visit the NASIOC Upgrade Garage...
Go Back   NASIOC > NASIOC Technical > Tire & Wheel

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 08-01-2005, 12:12 PM   #1
Bundyboyz
Scooby Specialist
 
Member#: 32764
Join Date: Feb 2003
Chapter/Region: MAIC
Vehicle:
2003 WRX with 91K
New Motor & Paint WRB

Default and now for something crazy

I'm in a situation, and that's why I'm asking this question.

Mr. Tire ruined a rear tire... just one by having the toe way out. The tires really only had a few thousand miles left anyway. I replaced the tires and wheels with a package from discount tire direct.

See thread... thoughts on this 17 x8 package 848

Anyway to even up at Mr. Tire I got a free alignment done right... belts replaced. And they said they will find a take off 16 tire, to put on my old 16 wrx wheel... to match up close enough to have a tire wheel that will work as a full size spare for my 17 inch tire wheel combo.

Let's simpllify. Is it possible to use a 16 inch wheel tire combo to act as a full size spare. I assume it'd be like a 205/60/16 tire. I need to do some math. Anyone have an idea of what tire to run? The spare would need to match a 225/45/17 obviously tire width isn't important but the height is...

The spare would only be used to get me a few miles to safety or what not, as I'm aware of the diameter difference can fry your diff.
* Registered users of the site do not see these ads.
Bundyboyz is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 08-01-2005, 03:08 PM   #2
Bundyboyz
Scooby Specialist
 
Member#: 32764
Join Date: Feb 2003
Chapter/Region: MAIC
Vehicle:
2003 WRX with 91K
New Motor & Paint WRB

Default

...bump still trying to figure this out, so as not to cause damage.
Bundyboyz is offline   Reply With Quote
Old 08-01-2005, 03:28 PM   #3
Blackboxracing
Scooby Newbie
 
Member#: 90106
Join Date: Jun 2005
Location: long island, NY
Default

you got it, as long as your overall diameter is the same (your aftermarket stuff should have the same stock diameter) your good
Blackboxracing is offline   Reply With Quote
Old 08-01-2005, 03:28 PM   #4
Thingfish
Scooby Newbie
 
Member#: 91451
Join Date: Jul 2005
Location: Vegas
Vehicle:
03 WRX
WRB

Default

A 205/55/16 ( Stock WRX ) matches a 225/45/17 . Both are 25", +/- .1 , depending on maker.
Thingfish is offline   Reply With Quote
Old 08-01-2005, 04:44 PM   #5
ripvw
NASIOC Supporter
 
Member#: 27790
Join Date: Oct 2002
Chapter/Region: E. Canada
Default

Quote:
Originally Posted by Thingfish
A 205/55/16 ( Stock WRX ) matches a 225/45/17 . Both are 25", +/- .1 , depending on maker.
correct, and 205/55x16 is what I am using as my full size spare on my original 16x6.5 alloy.

calculator here for matching up other sizes:

http://www.miata.net/garage/tirecalc.html

rolling circumference of 225/45x17: 78.5
rolling cicumference of 205/55x17: 78.2
(nominal measurements, actual will depend upon tires)

while the 225/45x17 is very slightly larger, as you wear down those tires they will get closer in rolling circumference to your (hopefully) unused 205/55x16 spare. Subaru specs call for all tires to be within 1/4 inch rolling circumference, so you're pretty damn close. In my opinion, the 1/4 inch spec is a good thing to shoot for, but for short distances it doesn't matter that much.

By comparison, the T135/70x16 donut is miles off with a rolling circumference of 73.64, which is why those with automatics using the donut are supposed to pull the AWD fuse and put their car into FWD. Those with an MT should try to run the donut on the front wheels - open diff.

all of this and much more was recently an entertaining topic in the News and Rumors forum:

http://forums.nasioc.com/forums/showthread.php?t=812110
ripvw is offline   Reply With Quote
Old 08-01-2005, 05:08 PM   #6
Bundyboyz
Scooby Specialist
 
Member#: 32764
Join Date: Feb 2003
Chapter/Region: MAIC
Vehicle:
2003 WRX with 91K
New Motor & Paint WRB

Default

alrighty! well done nasioc.
Bundyboyz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
And now for something completely different... ajbinord Mid West Subaru Owners Club Forum -- MWSOC 2 04-16-2005 02:03 AM
And now for something completely different... WHTWRX Off-Topic 7 08-07-2003 12:39 AM
And now for something completely different.... WHTWRX Off-Topic 21 07-30-2003 04:34 PM
And now for something completely different... Your favorite Monty Python Lines. redoktober_99 Off-Topic 52 08-29-2002 11:18 AM
And now for something completely different rao Mid West Subaru Owners Club Forum -- MWSOC 13 06-15-2001 08:42 AM

All times are GMT -4. The time now is 11:03 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2017 Axivo Inc.
Copyright ©1999 - 2017, North American Subaru Impreza Owners Club, Inc.