Staggered wheels, same tires - Page 2 - Ford Mustang Forum
Reply
 
LinkBack Thread Tools
GT Member
4.6L Member
S197 Member
 
Norm Peterson's Avatar
 
Joined: Dec 2012
Location: Delaware Twp
Posts: 1,640
 
Garage
Quote:
Originally Posted by mrp5150 View Post
A 275 should be more than fine on a 9" wheel. Tirerack lists a 9" wheel as the minimum size for every 275 I've looked at on there.
I'll give it an "OK", but no more than that. Minimum-width wheels in general says you're either working within some competition class rules that limit wheel width or that you care a lot more about appearance than you do about cornering.


Quote:
Originally Posted by sleepy06 View Post
I have 295/35 on 20x10 and 255/35 on 20x8.5
The 255's on a wheel wider than 8.5 will start to look stretched so I think 275 would be perfect for your 20x9 wheels.
8.5" is the "measuring width" wheel for 255/45. The T&RA and mfr tables give you another inch wider as being acceptable. The 2008 GT500 ran 255/45's on 18 x 9.5 wheels.

Where cornering response is concerned, a "stretched" appearance tends to be precisely the right look. Don't let old school and drag racing "looks" confuse this. The GT500 setup above works quite nicely on a NA 4.6L, though it's still understeerish over a 20 minute track session partly because 255 still isn't enough tire (and partly because -1.8 still isn't enough camber).


Quote:
Originally Posted by waynemac View Post
Sounds like I was on the right track. Out of curiosity, what effect would running the same size tires on staggered wheels have?
A wider wheel will stiffen the tire laterally and make for generally lower slip angles. When you are tire size limited for any reason, a wider rear wheel will help ensure a little understeer. This is as opposed to tire size stagger where you throw away front tire grip to get that understeer.

Even the car mfrs are starting to grasp this - Chevy's Camaro 1LE and the upcoming Z/28 both run staggered wheel widths but equal front and rear tire sizing. 1" difference in the 1LE, 1/2" in the Z/28 may speak to the relative levels of understeer intended.



Quote:
Originally Posted by JBert View Post
Putting a narrow tire on the wider wheel (rear) would not yield the traction that a wider tire would give.

In other words, it kinda defeats the purpose of the staggered wheels.
For straight line acceleration traction that may be the case, but for cornering where you're generally trying to reduce OE understeer you're actually helping things along. Basically, it is possible to have too much rear grip, and crutching that with stiff rear springs and/or sta-bars is more of a Band-Aid than a true solution.


Norm


'08 GT coupe, 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost stock height
'19 WRX, 6M (hers)
'01 Maxima 20AE, 5M (spare, winter driver)
Norm Peterson is offline  
Sponsored Links
Advertisement
 
post #17 of 20 (permalink) Old 02-02-2014 Thread Starter
Apprentice
 
waynemac's Avatar
 
Joined: Sep 2013
Location: Lawrenceburg
Posts: 71
 
So you are saying 275's all around would yield positive results from a cornering standpoint?


Sent from AutoGuide.com Free App

waynemac is offline  
Apprentice
 
akdoggie's Avatar
 
Joined: Oct 2009
Location: Anchorage, Alaska
Posts: 217
 
Here is a tire chart that gives size to rim.
Attached Thumbnails
Click image for larger version

Name:	tire to rim size.PNG
Views:	42
Size:	138.6 KB
ID:	312258  

07 Mustang V6, GT 19'' wheels, Bullitt suspension & brakes, Dynomax dual exh w/GT takeoffs, Eleanor style grille, Shelby rear spoiler, CS/GT bumpers, SHR insert, side & rear window louvers, CS/GT scoops, SYNC/Navi, Roush hood scoop, Leather power seats, IUP w/GT MyColor, hood shocks, 8.8 trac-loc w/3:73 gears, logo'd trunk mat, trunk lid storage organizer. Gen 5 tail lights, '12 lighted vanities & outside mirrors, '13 Boss Strg Whl.w/audio controls, Ambient lighting, puddle lamps
akdoggie is offline  
 
GT Member
4.6L Member
S197 Member
 
Norm Peterson's Avatar
 
Joined: Dec 2012
Location: Delaware Twp
Posts: 1,640
 
Garage
Quote:
Originally Posted by waynemac View Post
So you are saying 275's all around would yield positive results from a cornering standpoint?
On a somewhat nose-heavy RWD car you generally need as much front grip as you can find, particularly with a stick axle rear that cannot be made to gain favorable camber in roll or easily adjusted to give any camber different from whatever cambers it sits at now (which may not be precisely zero).

The only exception that comes to mind is when you've got a forced induction level of torque instantly available, where there may be more value in a little extra rear tire mitigating episodes involving careless throttle than what you lose due to heavier understeer.

In a NA daily driver, 275's all around would be a solid performer, although beyond some point having 275's or possibly 285's on 10" wheels all around would be an improvement on that.


Norm

'08 GT coupe, 5M, wheels, tires, pads, fluid, a few suspension mods . . . still almost stock height
'19 WRX, 6M (hers)
'01 Maxima 20AE, 5M (spare, winter driver)
Norm Peterson is offline  
post #20 of 20 (permalink) Old 02-04-2014 Thread Starter
Apprentice
 
waynemac's Avatar
 
Joined: Sep 2013
Location: Lawrenceburg
Posts: 71
 
Thanks for all the input! As always a learning experience.

Sent from AutoGuide.com Free App
waynemac is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


Search Engine Friendly URLs by vBSEO 3.6.1