Search



Go Back   MustangForums.com > Ford Mustang Tech > 2005 - 2014 Mustangs > S197 Handling Section
Sign in using an external account
Register Forgot Password?
Search

S197 Handling Section For everything suspension related, inlcuding brakes, tires, and wheels.

Welcome to Mustang Forums!
Welcome to Mustang Forums.

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, at no cost, 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!


Reply
 
 
 
 
Thread Tools Search this Thread
Old 09-13-2013, 01:53 PM   #1
WiffleballTony

 
WiffleballTony's Avatar
 
Join Date: Sep 2013
Vehicle: 2012, Ford Mustang GT
Location: Arizona
Posts: 2
Default Staggered setup, grip questions

Hi All,
I understand this has probably been discussed at length many times. However, after my extensive searchings of the interwebs I was unable to locate the answer to my question(s). So please be gentle.

I'm a novice, so bear with me. I purchased a 2012 GT and have consequently added some power mods to it. However at this point the car is overwhelming the stock wheels and tires the car came with 18x8 (235/50ZR18). As such I am looking to regain traction. I also wanted to change the wheels so I could fit bigger brakes and probably save some unsprung weight. I am leaning towards the Enkei PF01s. My initial idea was to go 255/45-18s up front and 285/40-18s in the back.

I plan on taking this car to the track in a few years (I do not currently), I also plan on doing some suspension upgrades in the future as well. So the question(s) are:
1) Understeer will be added by the increase of rear grip from the back tires. How bad will it be? Since I am also adding grip up front, wouldn't the overrall grip be better than what I have currently and thus be a net improvement in handling?
2) Am I future proofing myself by going big in the back if I plan on adding really big power adders ie twin turbos etc? Being able to put down the power better out of the turns?

Thanks for your time!
This ad is not displayed to registered or logged-in members.
Register your free account today and become a member on Mustang Forums!
WiffleballTony is offline   Reply With Quote
Old 09-14-2013, 04:12 PM   #2
Fox Fader
2nd Gear Member
 
Fox Fader's Avatar
 
Join Date: Feb 2012
Vehicle: 10GTManualPremium
Location: Columbus, GA USA
Posts: 170
Default

Dang, no replies. I'm interested in some answers from the fiduciaries here.
__________________
2010 Mustang GT Premium Handshaker - comfort, shaker 1000, HID's
Yellow fogs, LED map & tag lamps, Tinted makers & tails, MMD Hood Struts, 2-1/8" "Cue Ball" Shift Knob, Sickspeed 401a jamnut, SR Performance Springs, Pypes Cat-back w/ Magnaflows, Bama Tuned. Dang, I work for a GM dealer!

2003 SRT-4 Stage 3
Up to 26psi boost. Fast!

PowerMix 2K1 <<Slammin Tunes!
Fox Fader is offline   Reply With Quote
Old 09-14-2013, 11:53 PM   #3
danzcool
4th Gear Member
 
danzcool's Avatar
 
Join Date: Oct 2008
Vehicle: 2008 GT
Location: CA
Posts: 1,554
Default

With the right suspension that will be way better than stock. I'm running 285/40 in the rear and 255/45 in the front, with the continental extreme contact DW, koni sport dampers, steeda sport springs, steeda hd strut mounts, and adjustable sways, I've had it fine tuned to be pretty neutral in the corners (at 500 HP). at the power level I've got now, I've just got to be gentle in the corners (with power oversteer on demand, lol).

So, by adding some wider rubber up front you've increased grip, by getting better damping all around you reduce the need for understeer, by increasing the negative camber (with caster camber plates or the steeda HD strut mounts) you basically can dial in as much grip as you need. With an adjustable sway bar you can dial in the lateral weight transfer and keep the car flatter.
__________________

danzcool is offline   Reply With Quote
Old 09-15-2013, 08:19 AM   #4
Norm Peterson
6th Gear Member

 
Norm Peterson's Avatar
 
Join Date: Feb 2007
Vehicle: 2008 GT Premium
Location: state of confusion
Posts: 6,724
Default

Quote:
Originally Posted by WiffleballTony View Post
1) Understeer will be added by the increase of rear grip from the back tires. How bad will it be? Since I am also adding grip up front, wouldn't the overrall grip be better than what I have currently and thus be a net improvement in handling?
It is entirely possible (and quite likely in this instance) to get an increase in lateral grip AND have the amount of understeer increase. In simple terms, you're still adding more grip at the rear than you are at the front; in slightly more advanced thinking, your rear slip angles will be reduced by more than the front slip angles, and this difference in slip angles will be with you at all cornering g's (not just the max-lateral-g point where one end or the other gives up and starts drifting wide).



Quote:
2) Am I future proofing myself by going big in the back if I plan on adding really big power adders ie twin turbos etc? Being able to put down the power better out of the turns?
With more tire back there you will have a little extra cushion against a careless right foot . . . unless you also re-balance your suspension for more neutral behavior generally.

"Careless right foot" here means you can expect it to be "trickier" to hold the car on the limit with the throttle without going beyond. You may find it easier to drive if, say, you intentionally use 4th instead of 3rd on corner exit, 5th instead of 4th, etc.

If you really get carried away with making big power it may not matter how much tire you put back there or what the suspension tuning is; you'd just be able to overpower it anyway without even trying.


Norm
__________________
'08 GT/5MT (mine)
'10 Subaru Legacy 2.5GT/6MT (hers)
'95 626/V6/5MT (autoX, winter, spare)
'01 Maxima 20AE/5MT (other spare)
Norm Peterson is offline   Reply With Quote
Old 09-15-2013, 04:45 PM   #5
WiffleballTony

 
WiffleballTony's Avatar
 
Join Date: Sep 2013
Vehicle: 2012, Ford Mustang GT
Location: Arizona
Posts: 2
Default

Thanks for the replies guys, I appreciate the time to explain the answers to me. Cheers!
WiffleballTony is offline   Reply With Quote
Old 09-15-2013, 04:45 PM
MustangForums
Ford Mustang




Paid Advertisement

 
 
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Advertising

Featured Sponsors
Vendor Directory
New Sponsors
All times are GMT -5. The time now is 01:02 AM.

© Internet Brands, Inc.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Friendly URLs by vBSEO 3.5.2

This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company
Emails Backup