Best tire alignment for oem boss suspension

Discussion in 'Brakes, Wheels and Tires' started by eng90, Feb 19, 2019.

  1. eng90

    eng90 TMO Race

    Messages:
    220
    Likes Received:
    2
    Joined:
    Aug 4, 2014
    hey guys,

    I need your help in setting up the best tire alignment for circuit course track.

    I have a 2013 mustang boss 302 with oem wheels and suspension, unfrtunately here where i live the best tires i found is michelin pilot super sport front 255/40R19 and michelin ps22 285/35R19 rear.

    Thanks,
     
  2. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,319
    Likes Received:
    884
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    Hi, I would get camber plates or at least camber bolts. With the stock suspension/wheels I put 275/35-19 tires front and back...
    Front shocks on 5 and rears on 3. Camber is a must, wrecked a set of fronts in one track school with stock camber.....expensive!

    You can go too -2 camber with out too much inner wear on the street.

    I have 15.000km on my supersports with never less then -2.5 camber. Oh,,, toe at zero and all the caster you can get (approx 7 degrees)
     
    Duane Black and SavetheManuals like this.
  3. TMSBOSS

    TMSBOSS TMO Addict

    Messages:
    3,797
    Likes Received:
    1,014
    Joined:
    Aug 23, 2011
    Location:
    Illinois
    Don't let a shop tell you they can adjust without camber plates or bolts. It can be done....sort of. They drill your shock towers in the hope of moving the top of the strut correctly.
    Bolts may get you close. Plates are needed to get a good bit of camber.
    Mad Hatters specs are what I run.
     
    Duane Black and Mad Hatter like this.
  4. Coz

    Coz TMO Race

    Messages:
    272
    Likes Received:
    199
    Joined:
    Mar 4, 2018
    Location:
    Philly Metro Area
    I run mine with -1.8 and 0 toe with no problems regarding wear. Will go to -2.0 next.

    By the way, is there any problem with mounting the OEM fine pitch strut mount bolts with the bolt on the back side instead of the nut? I want to reverse the orientation of mine since I can't check if its torqued properly without disconnecting the brake ducts.
     
    SavetheManuals likes this.
  5. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,319
    Likes Received:
    884
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile

    Down here, the thing they do all the time is Hog the bolt holes and "TA DA" instant camber.... till you hit a curb etc....... Sorry sight to see a new strut hogged becuase they didn't want to get a camber plate or at least camber bolts
     
    Last edited: Feb 20, 2019
  6. domesticpower

    domesticpower Track Addict

    Messages:
    115
    Likes Received:
    58
    Joined:
    Jun 12, 2013
    Location:
    NS
    I have a set of MM Camber plates and they have been great so far. They supposedly can go down to -2.7 with an aftermarket thinner strut or coils.

    I tried running -1.8, -2.0 and now I'm at -2.3 (maxed with stock struts) and I'm finally getting even wear between street and track. I was also running Pilot Super Sports on the front. They are a great tire but have soft sidewalls, You'll be driving on the shoulder all the way around every turn so you need a decent amount of camber. If you are doing more than 2-4 track days a year and pushing the car, you'll chew the shoulders quickly.
     
    Last edited: Feb 20, 2019
    Mad Hatter likes this.
  7. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,319
    Likes Received:
    884
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    Have the MM camber plates as well, I maxed out at -2.5 camber with coilovers... In the end, used camber bolts to get me too -3.5 and now bought a second set trying for -4 or -4.5.
     
    TymeSlayer likes this.
  8. TymeSlayer

    TymeSlayer Tramps like us, Baby we were born to run...

    Messages:
    2,446
    Likes Received:
    1,168
    Joined:
    Dec 12, 2011
    Location:
    Brighton, Colorado
    Going to my alignment guy soon or when weather permits. With MM CC plates and Koni Yellows, he thinks he can take me from -2.0 to -3.0 but no more with my current set-up. I'll be happy for now if he can get me to -3.
     
  9. TMSBOSS

    TMSBOSS TMO Addict

    Messages:
    3,797
    Likes Received:
    1,014
    Joined:
    Aug 23, 2011
    Location:
    Illinois
    With stock struts and MM plates, i have 2.5. Without grinding on the towers, thats about all available.
     
  10. TymeSlayer

    TymeSlayer Tramps like us, Baby we were born to run...

    Messages:
    2,446
    Likes Received:
    1,168
    Joined:
    Dec 12, 2011
    Location:
    Brighton, Colorado
    I'll let you know how I make out.
     
  11. Norm Peterson

    Norm Peterson Corner Barstool Sitter

    Messages:
    285
    Likes Received:
    239
    Joined:
    Oct 22, 2017
    Location:
    a few miles east of Philly
    What you're telling me is that those folks are smart enough to know they need more negative camber and one way of getting it, without being sharp enough to include any means of positively locating the bolts in the big holes so that the cambers stay put.

    A flat washer, a really tiny bit of welding, and a little filing . . .


    Norm
     
    Mad Hatter likes this.
  12. Mad Hatter

    Mad Hatter Gotta go Faster

    Messages:
    2,319
    Likes Received:
    884
    Joined:
    May 6, 2013
    Location:
    Santiago, Chile
    Yup,,, thats it.. Have seen about 3 brand new S550 come in to the shop I use to fix big ugly oveled out holes instead of a nice decent "Permenent fix" First big bump and the alignment is off.

    Since my Cortex set up has the extended offset I did not want to bugger up a nice Coilover.... so thats why the double camber bolts and camber plate. Hope to sell them soon and upgrade!
     
    Bill Pemberton likes this.

Share This Page