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  • Tire Pressure

    does anyone know the correct tire pressure for our cars, it should say on the inside of the drivers side door or the owners manual correct? I need to know because I don't have either the sticker on the door or an owners manual and I know my tires are getting low. BTW I don't have the OEM tires I have Dunlop SP 5000s
    1998 Arctic White 3800 V6 :mods: Whisper lid with K&N, SLP Cold Air induction kit, 50hp shot of NOS, KVR Front Brake Rotor blanks and KVR Carbon Fibre Metallic Pads (set of 4), BMR Strut Tower Brace, BMR Adjustable Panhard Rod, BMR Control Arm Relocation Brackets, BMR Control Arms, BMR Sway Bars, B&M ripper shifter, Centerforce Dual Friction Clutch, H&R lowering springs, and Flowmaster exhaust: MORE MODS AND WEBPAGE SOON!!!

  • #2
    30 psi, according to the owner's manual and this website(techinical database). Check to see if tire has minimum pressure though. I run 32 in my Kumhos. Max pressure 44psi. Could'nt find a minimum pressure on the sidewalls.
    <b>1998 Firebird 3800 Series II, A4</b><br />Direct-Flo Lid,K&N Filter,DEE TB Spacer,TPS-TEC,ZZP Mini-AFC,Raised and Cutout Airbox 7mm,BMR STB & Boxed LCAs,KYB AGX Shocks,Drilled/Slotted Rotors,180* Thermo,2.5\" Catco Cat,Dynomax 2.75\" custom catback,Kumho Ecstas/245,Jet Stage 2,3.42,Edge Racing 2870 Stall,B&M Tranny Cooler,B&M Deep Tranny Pan,LSD,AAM Girdle,1LE DS,NX Wet Kit,MSD DIS-4,MSD Blaster Coil Packs,Taylor Spiro Pro 8mm Wires,NGK TR6\'S gapped .045,ZZP UD WP Pulley,SLP Fan Switch,TT II\'s<br />N/A: 15.6342 @ 88.44 (On stock converter. Strugglin\' to beat it.)<br />Nitrous 50 Shot: 14.7463 @ 93.49

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    • #3
      Usually 28-30 on family cars, 32+ on sports cars. I used to run 33 on everything.

      I get the best dry handling on my Camaro at 35 psi.

      I dropped the rears down to 30 a couple of weeks ago, and haven't aired them back up yet. The car just about got away from me yesterday, I was going sideways down the road for a little bit, in a long drift that I almost overcorrected on...

      Because I was accustomed to the way it normally handles at 35 psi, and pushed the car beyond what the tires would take at only 30 psi.

      The local walmart said I would wear the centers down if I ran them at 35, but that is not the case.

      This is my first replacement set, and I have over 76000 miles on the car. No abnormal wear on the originals or the second set. The second set has over 50% tread left.
      \'98 A4 Camaro v6-&gt;v8 conversion, and STS kit next<br />v6: 13.6 Powerdyne, 13.2 150 shot, 13.8 120 shot, 14.3 85 shot, 15.7 stock<br />v8(na): 12.18@113, 392rwhp<br />Moderator on <a href=\"http://www.mtfba.org\" target=\"_blank\">www.mtfba.org</a> and <a href=\"http://www.frrax.com\" target=\"_blank\">www.frrax.com</a> (Road Race & Autocross)<br /><a href=\"http://community.webshots.com/user/johnduncan10\" target=\"_blank\">Car pics</a>, <a href=\"http://www.trscca.com\" target=\"_blank\">TN Region SCCA</a>

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      • #4
        My co-worker has a Z28 and he says his door placard states to put it at 32lbs on all four. I got the same tires and I put 32 on all of them.

        BTW, how are those rotors and pads compared to stock? How long had you had them and what mileage??

        thx
        Ed
        [img]graemlins/burnout.gif[/img]
        1999 Pewter Camaro M5<br />Y87 Performance Package, Sport Appearance Package, Diamond Clears<br />Factory SS Hood, Free Ram Air Mod, Whisper Lid w/ K&N Air Filter<br />CarSound Cat 94009, B&B Tri-Flo w/ Quad Tips<br />BMR SFC, BMR STB, KVR Blank Rotors, Hawk HPS Pads<br />Black Painted Calipers w/ CAMARO Decal, 245/50 Dunlop SP Sport 5000<br />20% Rear 35% Side Tint, Red Reflective Inlays, Invincishield<br /><b>Young girls avert their eyes, weak men tremble, Ford dealers faint.</b>

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        • #5
          I run 33 psi cold in all four of them
          Track conditions are different of course
          Race car - gone but not forgotten - 1997 firebird V6
          nitrous et & mph: 12.168 & 110.95 mph, n/a 13.746 & 96.38 mph
          2013 Dodge Challenger SRT8: 12.125, 116.45
          2010 Ford Taurus SHO: no times yet

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          • #6
            <blockquote>quote:</font><hr>BTW I don't have the OEM tires I have Dunlop SP 5000s <hr></blockquote>

            It should say on the side walls of the tires what pressure they are rated for. Each type (brand and model) is made for a different pressure. I'd say to look at what the tires say.
            1998 V6 m5<br />ram air mod<br />(the sc is for south carolina not super charged but maybe that will change)<p>\"Thank the Lord for air tools\"

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            • #7
              Stock pressure is indeed 30psi front/30psi rear.

              However, this is only recommended for P235/55R16 poor wearing Eagle GAs. Even with mine at 25psi they'll wear the centers.

              I owned some SP5000s for a while, loved them every mile I drove on them too. I ran my rear at 32 and my front at 35 - it worked well for them.

              If you want to be precise, try wetting the driveway a little and backing across the wetness - it'll leave a wet track. You can then measure the wet track and see if its the width of the tread or not. If the wet track is too narrow, lower the pressure - or if the middle is missing, air them up! You can easily find the "proper" tire pressure for street driving this way [img]smile.gif[/img] .
              2002 5-spd NBM Camaro
              Details: www.1lev6.com

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              • #8
                "It should say on the side walls of the tires what pressure they are rated for. Each type (brand and model) is made for a different pressure. I'd say to look at what the tires say."

                The pressure on the side of the tire is only the absolute maximum pressure the tire can take. If you use that on most any vehicle, you'll be way overinflated.
                2000 Firebird convert, chameleon/tan, M5, Y87, TCS, BMR tower brace and panhard, KBDD sfcs, 245/50-16 GSCs

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                • #9
                  <blockquote>quote:</font><hr>Originally posted by V6Bob:
                  The pressure on the side of the tire is only the absolute maximum pressure the tire can take. If you use that on most any vehicle, you'll be way overinflated.<hr></blockquote>


                  I did this once on a rental car - it caused a blow out. 42psi in all 4 tires [img]graemlins/omg.gif[/img] NOT A GOOD THING.

                  Only pump your tires this far if you need it for sidewall roll protection in AutoX - for street driving it is NOT ADVISEABLE. Somewhere between 30-37psi you will find your proper tire pressure.
                  2002 5-spd NBM Camaro
                  Details: www.1lev6.com

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