Mustang GT 99-04 vs 05-09 painted aluminum wheels?

Discussion in 'Tires and Wheels' started by GT97222, Nov 21, 2020 at 12:27 AM.

  1. GT97222

    GT97222 Junior Member

    8
    5
    Hi,

    Is there any difference between the Ford painted aluminum wheels that came on the Mustang GT in 99-04 and 05-09?

    did Ford offer them in multiple shades of silver? It seems to me some where silver and some where more gunmetal gray. Thanks

     
  2. Juice

    Juice forum member

    1,697
    391
    Yes, I have a set of each. I always thought those were for 05 & up GT wheels. V6'ers got a 16" wheel.
     
  3. Norm Peterson

    Norm Peterson corner barstool sitter

    Age:
    73
    3,309
    172
    The wheel offsets are considerably different. Like at least 15 mm different.


    Norm
     
    GT97222 likes this.
  4. Juice

    Juice forum member

    1,697
    391
    Interesting. Not sureif there is that much difference.
    I got my FR500 replicas, I compared the 99-04 vs 05&up and there was almost no difference iirc. (Was like 7 yrs ago lol) I actuallu got the 99-04 wheels and those fit perfect on my 07.

    Ps: I wont be needing my 17"s as they dont clear the 11-14 brakes. Willing to part with the darker set. The light silver ones are going on the wife's car when its time for tires. Running the stock mustang 16's on the Grand Marquis now.
     
  5. stkjock

    stkjock ---- Madmin ---- Staff Member Administrator Super Moderator S197 Team Member

    38,712
    1,579
    Norms right. Been covered many times on the board. They boot up but don’t have proper figment
     
  6. Norm Peterson

    Norm Peterson corner barstool sitter

    Age:
    73
    3,309
    172
    People do run the early wheels on the S197, specifically to push the wheels out for a "because more flush" appearance.

    Have to say, I never did understand trying to make wheels and tires look like they're wider without making them actually be wider . . .


    Norm
     
    GT97222 and dark steed like this.
  7. Juice

    Juice forum member

    1,697
    391
    To clarify, Im talking about the difference in offset of a set of aftermarket fr500 style wheels. There was maybe 2mm offset difference in specs between 99-04 vs 05-09 18x9s. Dont remember what my reason was for picking the earlier wheels, but it was NOT to "push them out flush".

    Why wouldn't the adtermarket wheels have the oem offset difference?
    99-04 specs Item 28274G99 AM
    Size: 18x9
    Placement: Front or Rear
    Offset: 1.18 Inches, 30mm
    Backspacing: 6.18 Inches, 157mm
    Weight: 25.40 Pounds

    05-09 specs Item 28274G05 AM
    Size: 18x9
    Placement: Front or Rear
    Offset: 1.18 Inches, 30mm
    Backspacing: 6.20 Inches, 158mm
    Weight: 25.40 Pounds

    I stand corrected, it is a 1 mm difference.
     
    Last edited: Nov 21, 2020 at 10:21 AM
  8. Norm Peterson

    Norm Peterson corner barstool sitter

    Age:
    73
    3,309
    172
    OK, I understand that that might not be your reason, individually, for choosing them. But AM is an aftermarket entity that caters to the mass market where the popular appearance preference gets the lion's share of attention during the shopping process. And by extension, in aftermarket product design as well. Aftermarket wheels don't have to match Ford's OE offset specs, and in this case they absolutely are not.

    From the 2008 FRPP catalog,

    Ford's 17 x 8 S197 wheels are +45, as are the GT500 18 x 9.5 wheels. The 18x8.5 GT wheels (both the torq-thrust and fanblade styles) are +50

    Ford's similar-finish SN95 torq-thrust-style wheel is +30


    Norm
     
  9. GT97222

    GT97222 Junior Member

    8
    5
    Thanks Norm and the other replies. I'll get the late model rims I want them to fit properly. Found some on Ebay that look good. $600 refurbished with 30 day warranty. I'm going to try to contact them and find out what they do to refurbish them. Autorimshop.
     
  10. RED09GT

    RED09GT Senior Member S197 Team Member

    2,168
    249
    The stock 01-04 17x8 bullitt wheels do not have any fitment issues on an S197. I prefer the look of the wheels sitting more flush. The tucked in look and the stock 4x4 look was to facilitate the use of winter tire chains. If you never plan on using chains, why not have the wheels further outboard- as long as they don't poke out. If you go the other way and put stock s197 17x8 bullitt wheels on a 94-04, it looks absolutely awkward.

    I do agree that wider wheels are better but if you are on a budget, why not pick the ones that look better if the function is pretty much identical?
     
  11. GT97222

    GT97222 Junior Member

    8
    5
    Just for my reference, do you know what to offset is on the 05-09 17" painted aluminum wheels? on one site I saw 45mm. The V6 and the GT have the same offset right?
     
  12. GT97222

    GT97222 Junior Member

    8
    5
    I just found the answer to my question. Yes and Yes.
     
  13. Norm Peterson

    Norm Peterson corner barstool sitter

    Age:
    73
    3,309
    172
    Ford most likely had scrub radius in mind as opposed to a BMW-esque appearance, for both the SN95 and S197, and the different platforms/sheet metal contours just ended up forcing different offsets. For an OEM, getting the steering right is more important.

    Sensitivity to braking and stability through cornering are involved, with wheel offsets ending up putting the scrub radius at or very close to zero not being preferred.


    Norm
     
    Last edited: Nov 21, 2020 at 4:23 PM
  14. RED09GT

    RED09GT Senior Member S197 Team Member

    2,168
    249
    I'm trying to find the source. In early 2004, there was an interview with Thai Tang, the chief engineer for the mustang and one of the questions was about the wheel tuck and the ride height. His response was that the engineering team had to make compromises due to a ford corporate requirement that vehicles needed to have clearance for tire chains and they had to sit so that if a chain came loose, it would not cause damage to the body of the car.
    I'll post it f I can find it, only excerpt that I have found so far is for a suspension bolt-on project in a magazine.

    From Muscle Mustangs and Fast Fords January, 2011:
    Ford's official word on why Mustangs are given the high stance has been snow-chain clearance (and they're actually serious). Although we begrudgingly understand the concession, the truth is that the factory ride height is stilted. Not only does the stock stance look goofy, it really does hinder a 'Stang's handling potential.
     
  15. Norm Peterson

    Norm Peterson corner barstool sitter

    Age:
    73
    3,309
    172
    No surprise there. OEMs tend to have such corporate standards. Though the S197 at least has the sheet metal folded back on itself around the rear wheel openings. What we don't know is whether it was the sheetmetal that got there first (and drove the choice of wheel widths and offsets) or if the wheels and tires had any influence on the sheetmetal contouring.


    I am going to take issue with that last bit. Unless they're talking about fully developed, caged, wheel-to-wheel road-race cars, a lowered ride height doesn't mean nearly as much to cornering and handling as the appearance suggests. By itself, 2" of lowering (pretty serious lowering representing 10% of about a 20" CG height and 35% of a 5.7" ground clearance) might buy you another 0.03g on a car that's already cornering at 1.1 lat-g at full stock height.

    Nearly all of the improvement from "lowering" comes from the springs and sta-bars being firmer than stock, if they're enough stiffer to overcome the effect of the front roll center dropping faster than the amount of lowering. Only then is body roll in any given corner reduced. Strut suspended cars will roll more in a corner when lowered if the springs and bars are left at OE stiffness.


    There does seem to be some variation in ride height from one specific car to another here, so at least for some cars MM&FF's "stilted" description is overly exaggerated. Certainly to me, any amount of lowering that visibly un-centers the wheel in its sheetmetal opening is already too much (round shapes look better together when they're concentric). And when the gap at the top of the tire gets too small it makes the car look like it's never supposed to be driven hard enough to make its suspension move at all, or be steered through a corner without the risk of rubbing. It just looks wrong (tired springs, overloaded car), and anti-functional as far as actual driving is concerned.


    Norm
     
  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.