Results 1 to 3 of 3

Thread: E30 Track tire pressures

  1. #1
    Join Date
    May 2007
    Location
    NC
    Posts
    134
    My Cars
    2002 BMW M3

    E30 Track tire pressures

    I have a 1990 325i that is S52 swapped.

    My setup:
    - Ground Control coilovers. (I can add the spring rates later today)
    - Rebuilt factory LSD
    - 2.5 degree negative front camber, 2.0 degree negative rear camber
    - 0 toe front, 1/8" toe rear
    - Corner balanced with 50/50 cross weight
    - 2950lbs with full tank and myself in the car
    - Stock sway bars
    - 15x8" wheels
    - 225/45/15 Hankook RS4 tires

    I am trying to figure out the best hot temperature for the RS4 tires that I run with the setup and camber that I have. I am used to running 38 psi hot on my E46 M3 but I don't know what this car wants. Some people say more, others say that RS4s like less pressure.

    Suspension: AST 4100 GTS, Vorshlag camber plates, Turner limiters
    Brakes: ZCP front and rear drilled rotors, Turner stainless steel brake lines, ATE Super Blue brake fluid
    Other: Reinforced rear subframe, All new RTAB, RSM, FCAB, Dunlop Star Spec tires 245/40/18 275/35/18

  2. #2
    Join Date
    Nov 2012
    Location
    West Point, Virginia
    Posts
    959
    My Cars
    2002, 320is, 328is, M3
    Take temp readings across the tires. Work the pressure to try to balance out the temps hot across the tire. That should indicate your contact patch is good. Keep a notebook.
    ME:"I want to make my car faster and lighter"
    THEM:" Get out and let someone else drive"

  3. #3
    Join Date
    Aug 2009
    Location
    Metro DC
    Posts
    826
    My Cars
    79 323i, 94 325is, 13 M3
    I don't know, sorry. But, I have to say, sweet car.
    If God meant for man to motor-swap LS engines into track cars, He wouldn't have created Corvettes.

Similar Threads

  1. Street/Track tire pressure
    By TrackTempered in forum Tire & Wheel Forum sponsored by The Tire Rack
    Replies: 2
    Last Post: 08-30-2011, 03:08 PM
  2. Track Tire Pressure
    By Axol in forum Track, Auto-X & Drag Racing sponsored by Bimmerparts.com
    Replies: 9
    Last Post: 02-17-2009, 12:12 AM
  3. Suggested track tire pressures
    By wct8920 in forum 2001 - 2006 M3 (E46)
    Replies: 3
    Last Post: 07-03-2008, 04:55 PM
  4. Track tire pressure?
    By emoney1320 in forum Track, Auto-X & Drag Racing sponsored by Bimmerparts.com
    Replies: 9
    Last Post: 09-10-2007, 02:20 AM
  5. Track tire pressure question, Michelin vrs. Conti
    By ACS330Ci in forum Track, Auto-X & Drag Racing sponsored by Bimmerparts.com
    Replies: 2
    Last Post: 08-17-2004, 11:04 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •