Page 1 of 2 12 LastLast
Results 1 to 20 of 36

what air pressure should be used in tires @ 100 + mph ?

This is a discussion on what air pressure should be used in tires @ 100 + mph ? within the Camaro / SS forums, part of the Vehicle Specific category; whats the right psi for going over 100 mph ? my tire size is 275/40/17 cooper zion...

  1. #1
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
    Join Date
    Sep 2006
    Location
    Georgia
    Posts
    11,019

    Black
    2014 Camaro 1LS

    what air pressure should be used in tires @ 100 + mph ?

    whats the right psi for going over 100 mph ? my tire size is 275/40/17 cooper zion

  2. #2
    Senior Member ss~zoso~ss's Avatar
    Join Date
    Dec 2004
    Location
    )
    Posts
    9,128

    SS: NBM, tan top
    1998-SS, 2010 Jetta TDI

    none of us go that fast, its agains the law, good question tho

  3. #3
    Rice Killa JwMonE99's Avatar
    Join Date
    Aug 2006
    Location
    Myrtle Beach
    Age
    27
    Posts
    5,561

    Black With T-Tops
    96 Z28 M6

    Its good to alwayz keep it at least 32

  4. #4
    Junior Member
    Join Date
    Jan 2006
    Location
    VA
    Posts
    38

    WHITE
    2000 CAMARO

    30 psi normal application for 1998-2002 Camaro Z28 and SS(per door sticker)
    max out to whatever the max inflation pressure on the tire is for high speeds, but traction will suffer
    lower down to the minimum for improved handling, but acceleration will will suffer.

    I Work for GOODYEAR if you are wondering how I know

  5. #5
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
    Join Date
    Sep 2006
    Location
    Georgia
    Posts
    11,019

    Black
    2014 Camaro 1LS

    Quote Originally Posted by Terrance View Post
    30 psi normal application for 1998-2002 Camaro Z28 and SS(per door sticker)
    max out to whatever the max inflation pressure on the tire is for high speeds, but traction will suffer
    lower down to the minimum for improved handling, but acceleration will will suffer.

    I Work for GOODYEAR if you are wondering how I know
    ya I read on the door sticker but was not sure about speeds over a 100..ok read in the manual 38 psi over 100 mph
    Last edited by Speedy_Gonzales; 10-24-2006 at 10:16 PM.

  6. #6
    Member Ripper415's Avatar
    Join Date
    Sep 2005
    Location
    NY
    Age
    32
    Posts
    378

    Pewter
    2002 Camaro SS

    I check my tire pressure maybe every other week and keep all 4 at 30 psi. Since you said the manual called for 38psi for over 100 mph driving, what if I had it at my normal 30 psi but only went over 100 for a brief period....like say im racing someone and i'd spend maybe 30 seconds total over 100 mph? will that cause extra wear on the tires?

  7. #7
    Junior Member
    Join Date
    Mar 2006
    Location
    Baltimore
    Posts
    59

    Black
    2000 Trans-Am

    NOBODY HERE GOES OVER 100mph? That's a bunch of BS.
    If you own this type of car and don't push it past that you don't know what you're missing.

  8. #8
    Ebaaaaaaaaa Speedy_Gonzales's Avatar
    Join Date
    Sep 2006
    Location
    Georgia
    Posts
    11,019

    Black
    2014 Camaro 1LS

    Quote Originally Posted by Ripper415 View Post
    I check my tire pressure maybe every other week and keep all 4 at 30 psi. Since you said the manual called for 38psi for over 100 mph driving, what if I had it at my normal 30 psi but only went over 100 for a brief period....like say im racing someone and i'd spend maybe 30 seconds total over 100 mph? will that cause extra wear on the tires?
    lower air pressure is for better handling and higher air pressure for better speed i dont think it will affect tire wear just performance

  9. #9
    Alcohol Injected PaganEgyptian's Avatar
    Join Date
    Nov 2005
    Location
    Knoxville,Tn
    Age
    41
    Posts
    139

    Black
    1999 Pontiac Firebird

    Talking

    I have ran 35 f/r and ran 120, when I went for 150 I ran 40 psi f/r due to downforce pressures on the car, which adds load to the tires. If you notice the car sinking as you go faster, its the aerodynamics of our cars coming into effect. the faster we go, the most downforce on our cars which holds them to the road better. I havent read an official windtunel test, but I am guessing at 110mph, the down force is a few hundred pounds, at 130 it could be well over 600lbs pushing down. Hence the need for more tire pressure. A comparison is to drive regular highway speeds with couple really fat chicks in the car and see how the difference is running 30psi versus 40psi. The effect on the car is the only kind you want if there were two hot girls in the car and it being parked...

  10. #10
    Junior Member
    Join Date
    Jul 2006
    Location
    Richmond
    Posts
    14
    So what's the top end of a stock '99 Z-28 M6? 135 maybe 150??

  11. #11
    Member 98Z-28Camaro's Avatar
    Join Date
    Nov 2005
    Location
    Oklahoma City
    Age
    32
    Posts
    164

    black
    1998 Z-28 Camaro

    I think they have a speed limiter at 158. No sure though.

  12. #12
    Master Mechanic Jims455's Avatar
    Join Date
    Jun 2006
    Location
    Crowley Texas
    Posts
    212

    Red
    '02 WS6

    high speeds means more heat, more heat increases the tire pressure so if you are driving fast for extended periods of time, ie: hot lapping on a track, then you need to check the the pressure after one of these runs to make sure that you are not getting to much pressure.
    current cars:
    '02 WS6
    '71 Cutlass SX/455
    Bike:
    YZ 450F
    previous cars
    another '71 Cutlass SX (sold it in '81)
    '69 Camaro cp (sold it in '83)
    '93 Z28 ("" '99)
    '84 Z28 turned into IROC clone ("" '01)

  13. #13
    Junior Member
    Join Date
    Jul 2006
    Location
    Richmond
    Posts
    14
    Thanks..I was wondering. I've heard of 150 +, but thought they were blowing smoke. I guess 150 + is possible. Thanks for your input.

    Anybody else have any idea of top end of a stock 99 Z28 M6 3.42?

  14. #14
    Master Mechanic Jims455's Avatar
    Join Date
    Jun 2006
    Location
    Crowley Texas
    Posts
    212

    Red
    '02 WS6

    my '93 M6 was 153+ so I got to think that with ~50 more hP on tap the newer cars gotta be upwards of 160ish

  15. #15
    Member 98Z-28Camaro's Avatar
    Join Date
    Nov 2005
    Location
    Oklahoma City
    Age
    32
    Posts
    164

    black
    1998 Z-28 Camaro

    I have ran mine, which is an a4 and at the time 3.23s to 162ish. Now with 3.73s it is at about 5800 at 145 or there about.

  16. #16
    The owner's manual reads...
    If you’ll be driving at high speeds (e.g., speeds of
    100 mph (160 km/h) or higher), where it is legal, set
    the cold inflation pressure to the maximum inflation
    pressure shown on the tire sidewall, or to 38 psi
    (265 kPa), whichever is lower.
    When you end this high-speed driving, return to the
    cold inflation pressure shown on the Tire-Loading
    Information label.

  17. #17
    Member Chad97z's Avatar
    Join Date
    Aug 2005
    Location
    Dallas / Irving
    Posts
    396
    Quote Originally Posted by Jims455 View Post
    high speeds means more heat, more heat increases the tire pressure so if you are driving fast for extended periods of time, ie: hot lapping on a track, then you need to check the the pressure after one of these runs to make sure that you are not getting to much pressure.
    true but increased pressure is good for response

  18. #18
    Junior Member
    Join Date
    Jul 2006
    Location
    Richmond
    Posts
    14
    Thanks for the inputs. What what I'm hearing 150+ is very realistic and possible with a '99 M6 3.42.

    Thanks again...Drive safe, Keep the Shiney side up, and the greasey side down!

  19. #19
    Awaiting Activation
    Join Date
    Mar 2006
    Location
    LS1 land
    Age
    29
    Posts
    1,667
    Quote Originally Posted by Red Baron View Post
    Thanks for the inputs. What what I'm hearing 150+ is very realistic and possible with a '99 M6 3.42.
    Many guys on here have hit 150 +

    I personally have only got to 135 as i have no roads to really open up my car. But trust me at 135 the car had plennnnnnty left.

  20. #20
    Member
    Join Date
    Aug 2006
    Location
    canada
    Posts
    115

    bright rally red
    2002 ss 35th

    I totally agree with you same here.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. "E" Load Rated Tires - Air Pressure?
    By pajeff02 in forum GM Trucks
    Replies: 18
    Last Post: 08-12-2016, 09:01 AM
  2. Tires and Pressure
    By Blackbandit in forum Wheels and Tires
    Replies: 10
    Last Post: 04-09-2009, 10:28 PM
  3. Replies: 1
    Last Post: 12-13-2005, 04:07 PM
  4. Looking for gauges! nitrous pressure, fuel pressure!
    By texasss in forum Parts Wanted / Trade
    Replies: 2
    Last Post: 10-29-2005, 10:05 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
  •