Crown

Board: Porsche - 911 - 997 Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread


    Flat spots

    Been watching this forum for a while and got lots of great insight about our cars from all the posts i have seen. This is my first popst on the very awesome site now that i have my own.

    I have heard some mention of flat spotting on cars that have low profile setup like ours. I of course the best way to prevent it it just drive it but what about times you cant take it out like beeing on vacation for 3-4 weeks or storage in winter? Should i be concerned? How to prevent it? I saw a product called Tirecradle for like $350...not cheap. Does it work.Any one have experience with this product?
    Thanks to all

    Re: Flat spots

    Here's an IDEA: Get ready mix concrete and put in large plastic bag. Remove tire from car and set in concrete, until hard. Do this three more times. You now have four form-fitting pads. The problem is to get them exactly aligned/centered on all four tires. Jack car up? Form identical ramps to drive onto?

    Re: Flat spots

    The manual has info re: long term storage and potential flat spots

    Re: Flat spots

    I stored my C2S last winter without any flatspotting. The tires were inflated to 52PSI. Every 5 or 6 weeks the car was moved a few feet. In the spring, the tire pressure was reduced to 36/42PSI and away I went. No issues with the car or the tires. The car started within seconds. The ride was perfect with no signs of flatspots.

    A couple of notes on storing the car. If you wash it before putting it away, go for a nice spirited drive, with some good hard stops. This will dry the brakes and keep rust from forming on the disks. Never store the car for any length of time with the handbrake on. Also, before storing for the winter, change the oil.

    BTW, I do keep my battery charger plugged in anytime I will not be using the car for more than a week. This guarantees the battery is always good to go. However, in the summer months, even if I am out of town for a couple of weeks, I don't change the tire pressure.

    Re: Flat spots

    Quote:
    TheOldMan said:


    BTW, I do keep my battery charger plugged in anytime I will not be using the car for more than a week.



    Good idea. I believe my car, though deemed perfectly healthy by Porsche service, drains ALOT of battery current when parked. Not sure it would even make it a week.

    Re: Flat spots

    Hey, thanks for the ideas. The battery maintainer i will use use for sure b/c im sure the computers and other gizmos will draw a steady current. Even the battery on my older BMW dies if it sits more than 2 weeks...worse in winter. Im sure if battery dies on an 997 has got to mean trouble for all the computers on-board. Probably get system falts all over the place.

    As TheOldMan stated...I have tried infalting the tires to about 45 psi on my non-p cars and it worked but they were not as low profile. I thought that 52 psi would be pushing the tires near/past its limits so i never tried it that high. But moving it a few feet back/forward seems like a good idea too. As for storage..in winters...i just dont take it out when there is wet salt and/or snow on the roads. In NJ sometimes that goes on and on for a weeks so i thought i'd ask how you all handle it.

    Re: Flat spots

    Quote:
    TheOldMan said:...Never store the car for any length of time with the handbrake on...



    Someone mentioned that the handbrake on 996s/997s is separate from the main disk brakes. I heard it brakes separate drum brakes... comments?

    Re: Flat spots

    Quote:
    ADias said:
    Quote:
    TheOldMan said:...Never store the car for any length of time with the handbrake on...



    Someone mentioned that the handbrake on 996s/997s is separate from the main disk brakes. I heard it brakes separate drum brakes... comments?



    Correct. There is a drum brake on each of the rear wheel hubs which is actuated by the parking (hand) brake.

    Re: Flat spots

    Yes, they will flat spot, but it goes away after 5-10 minutes of driving. As mentioned above, overinflating the tires and rolling the car every few weeks will help.

    Re: Flat spots

    I did the same thing. Inflated them to about 56 psi and rolled the car back and forth several inches -maybe 18"- every two weeks or so. I also bought two fifteen foot carpet runners from the hardware store. I place the ruuners over the garage floor to keep the tires off the concrete. The runners are an indoor/outdoor carpet and easily roll up for summer storage.
    Wash the car, wax it and dry the rotors by braking until the water disperses. I never start the car until spring because dry cold starts are not good; unless necessary.
    Fresh oil if possible and add fuel stabilyzer to a FULL tank of fuel.

    Re: Flat spots

    I'm also in NJ and don't do anything special. The tires do get a a flat spot but it doens't last for more than a few miles. I don't store it, but like you, sharmat, drive the P less in the winter.

     
    Edit

    Forum

    Board Subject Last post Rating Views Replies
    Porsche Sticky The moment I've been waiting for... 5/18/22 6:36 PM
    Pilot
     
     
     
     
     
    572812 1306
    Porsche Sticky OFFICIAL: New Porsche 911 Turbo S (2020) 4/23/22 1:43 PM
    Rossi
    222143 1179
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 5/19/22 4:21 PM
    watt
    111430 968
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 4/1/22 7:14 AM
    Boxster Coupe GTS
    108034 405
    Porsche Sticky Porsche Taycan Turbo S - Short Review 1/3/22 7:55 AM
    Rossi
    89239 531
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 1/15/22 10:41 PM
    watt
    31403 1
    Porsche Cayman GT4 10/5/21 7:04 PM
    Topspeed
    511670 3587
    Porsche OFFICIAL: 911 GT2 RS (2017) 9/28/21 3:25 AM
    WhoopsyM
    427119 3507
    McLaren McLaren on a winning streak 2/1/22 10:14 PM
    SSO.
    423991 3954
    Porsche OFFICIAL: 991.2 GT3 RS (2018) 11/17/21 5:18 PM
    Rossi
    387580 3256
    Porsche OFFICIAL: 911 R (2016) 2/1/22 9:49 AM
    RCA
    364531 2655
    Porsche 992 GT3 5/13/22 3:48 PM
    Grant
    346839 3536
    Porsche OFFICIAL: The new Porsche 992 – a design icon and high-tech sports car 9/29/21 1:59 AM
    watt
    289277 1587
    Porsche Donor vehicle for Singer Vehicle Design 2/10/22 9:08 PM
    Topspeed
    137389 772
    Porsche Welcome to the new Taycan Forum! 4/25/22 7:26 PM
    bluelines
    134522 1388
    McLaren F1 7/10/21 7:43 AM
    BiTurbo
    110640 209
    AMG AMG GT R 3/13/22 8:52 PM
    spudgun
    109655 834
    Lambo Aventador and SV 4/20/22 3:29 PM
    Enmanuel
    107332 709
    Others Tesla 2 the new thread 5/19/22 5:11 PM
    Leawood911
    92444 1644
    Porsche GT4RS 5/19/22 6:02 PM
    GaussM
    83415 935
    Motor Sp. [2021] Formula 1 4/19/22 10:08 PM
    Leawood911
    75798 1590
    Others Bugatti Chiron 4/12/22 9:24 PM
    blueflame
    74742 520
    Ferrari Ferrari 812 Superfast 12/15/21 8:04 PM
    Topspeed
    70135 533
    BMW M BMW M2 Rumors 2/28/22 7:42 PM
    Topspeed
    61605 409
    Porsche Red Nipples 991.2 GT3 Touring on tour 4/4/22 7:10 AM
    GnilM
    54497 472
    Lambo Urus (SUV) 7/21/21 6:22 PM
    Topspeed
    53924 592
    Porsche Dave and Gnil @ Nürburgring Nordschleife 10/16/21 1:07 PM
    Pentium
    53843 719
    Others Corvette C8 11/8/21 8:04 PM
    Topspeed
    49793 442
    Others Toyota Yaris GR 4/13/22 8:33 PM
    Grant
    26484 640
    AMG AMG plotting new SLR with hybrid power for 2018 launch 2/22/22 2:34 PM
    Topspeed
    24126 275
    224 items found, displaying 1 to 30.