Suspension, Brakes, and Tire Tech Place to discuss suspension mods for all models

Matching Tire Sizes to GT350(R)

Old Apr 4, 2016 | 04:27 PM
  #21  
PonyMuscletang13's Avatar
Thread Starter
Mach 1 Member
 
Joined: December 3, 2012
Posts: 538
Likes: 11
From: SoCal
Ahh I remember this GT app. But the original TMS app was working again so I didn't go back to it. Thanks anyways hehe.

So back to my question,
Any ideas?
Reply
Old Apr 4, 2016 | 05:02 PM
  #22  
Stage_3's Avatar
Roush Forum Stalker
 
Joined: March 9, 2013
Posts: 11,140
Likes: 1,749
From: Massachusetts
Originally Posted by laserred38
It depends on the offset. 295s might fit up front, 305s won't with stock fenders and a usable camber. Check out Vorshlag. They offer custom offset Forgestar wheels to run 305s up front.
^^What Patrick said. Check out Vorshlag. They are pretty reputable with the auto-x scene.
You should see the Roush Stage 3 they have for sale. It's one of their client's cars that he is selling. Disgustingly awesome.
Reply
Old Apr 4, 2016 | 05:21 PM
  #23  
laserred38's Avatar
Legacy TMS Member
 
Joined: January 6, 2006
Posts: 14,053
Likes: 166
From: Bay Area, CA
Originally Posted by PonyMuscletang13
So I got the NT555G2's mounted over the weekend. They are 285/30/20 front, 305/30/20 rear. Not quite the GT350 specs but I'd say it was pretty close.

I'd love to post some pics but looks like we're having this phrase error issues again. And the IB app is also giving me blue screen(?) error or some sort.

Before all the impressions, I must kindly ask for an advise.

When the new tires are put on the car, and if the steering wheel feels loose/lighter (still on sport mode) than before, what should we check?
What tires and size did you have on the front before? And what are the tire pressures set to? Without knowing those variables, I'd honestly say it's most likely due to those new tires having quicker response to turn in/steering input
Reply
Old Apr 4, 2016 | 06:11 PM
  #24  
PonyMuscletang13's Avatar
Thread Starter
Mach 1 Member
 
Joined: December 3, 2012
Posts: 538
Likes: 11
From: SoCal
Originally Posted by laserred38
What tires and size did you have on the front before? And what are the tire pressures set to? Without knowing those variables, I'd honestly say it's most likely due to those new tires having quicker response to turn in/steering input
Before? was factory brembo pkg. So they were Pirellies 255/40/19's. Tire pressures on new ones I was told were 36 & 38 psi I forgot which one was the front or back lol.

I thought this is alignment or possibly corner balancing (what this is...?) Hmm?
Reply
Old Apr 4, 2016 | 06:59 PM
  #25  
laserred38's Avatar
Legacy TMS Member
 
Joined: January 6, 2006
Posts: 14,053
Likes: 166
From: Bay Area, CA
It's kinda rule of thumb to do an alignment after new tires, but camber is really the only thing you can change on these cars unless you have C/C plates, so if your old tires wore evenly, then you are probably good. So, that said...not sure what else to check if you're not getting a shudder in the wheel (which would denote the wheels being out of balance).
Reply
Old Apr 4, 2016 | 08:01 PM
  #26  
PonyMuscletang13's Avatar
Thread Starter
Mach 1 Member
 
Joined: December 3, 2012
Posts: 538
Likes: 11
From: SoCal
Hmm I was told unless the geometry (height) is changed there is no need for an alignment. The car already has some negative cambers to it from the suspension upgrades (coilover) while back. The new tires were just mounted on top of that setup.

In regards to the alignment, do we need the negative cambers? The old tires were not evenly worn and probably its because of this. Do most of you set the negatives vs stock straight (zero camber) when you get wider/performance tires or when suspension upgrade?

I'm really confused.
Reply
Old Apr 4, 2016 | 08:08 PM
  #27  
laserred38's Avatar
Legacy TMS Member
 
Joined: January 6, 2006
Posts: 14,053
Likes: 166
From: Bay Area, CA
To be honest, I've never done an alignment after switching tires, and haven't had a problem either.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
ZeeGT
2010-2014 Mustang
48
Feb 27, 2016 12:09 AM
Bryanh24
2010-2014 Mustang
58
Nov 20, 2015 08:53 AM
Bert
Mustang Motorsports
9
Nov 11, 2015 08:43 AM
AdPock
1964-1970 Mustang
1
Nov 8, 2015 05:46 AM


Thread Tools
Search this Thread

All times are GMT -6. The time now is 06:47 PM.