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308 tire size to fill whell well gap??

Discussion in 'Technical Q&A' started by groovzilla, Jan 10, 2004.

  1. groovzilla

    groovzilla Karting

    Nov 28, 2003
    117
    seattle, wa.
    Full Name:
    william
    all,

    i have my 79 308 gts in my garage and have been debating what size tire to get for the car..

    - the tires on the car now: goodyear P215/60 r14 eagle gt2..24" diameter..8.5" width

    they look too small in diameter..too much space in the wheel well

    i have ordered the sumitomo p205/70 hr14 which seems to be a very good all around tire...they have a 25.5" diameter and 8.2" width

    is there a larger diameter tire or should this sufficietly fill the gap???

    william ceriale seattle wa.
     
  2. Steve King

    Steve King F1 Rookie

    Feb 15, 2001
    4,353
    NY
    Try BFG 245-60-14 and they do a good job filling the WW. You won't get rid of the gap unless you lower the chassis. I think there was a thread that did this .
     
  3. Darolls

    Darolls F1 Veteran
    BANNED

    Jul 2, 2003
    6,799
    Full Name:
    Sparky
    Buy a set of 16" wheels, then you can put on tyres more appropriate for the car.

    225X50-16 on the front, and 245X45-16 on the rear.
     
  4. flashman

    flashman Formula Junior
    Silver Subscribed

    Jan 5, 2004
    479
    Star Valley, Arizona
    Full Name:
    William Rappaport
    I'm running 205X55-16 front, and 225X50-16 rear. They fill the wells and I have had no problems.
     
  5. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
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    Charles
    225/50-16 front
    245/50-16 rear
     
  6. flashman

    flashman Formula Junior
    Silver Subscribed

    Jan 5, 2004
    479
    Star Valley, Arizona
    Full Name:
    William Rappaport
    I am Getting ready to get new tires for my car soon, I have a question, why the 245/50-16 rears, and don't the 225/50-16 fronts rub the fender liners?
     
  7. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
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    Charles
    they fit perfect---the 245/50 is correct for keeping the right speedo reading---HOWEVER--got to tirerack and look up the overall tire diameter they will differ between manufacturers---all 245's are not the same.

    I am running Bridgestone re 730 tires and love them--so far

    the only thinng i had to do was to pull a small wire from the frame on the rears, drill a small hole in the fiberglass well near the front side of the shock and pull it about 1 inch to prevent any rubbing during heavy cornering

    will post pics in a sec
     
  8. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
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    Charles
  9. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
    Full Name:
    Charles
  10. flashman

    flashman Formula Junior
    Silver Subscribed

    Jan 5, 2004
    479
    Star Valley, Arizona
    Full Name:
    William Rappaport
    Thanks for the advise and Pic's, I never thought about the speedo.
     
  11. Mike C

    Mike C F1 Veteran
    Owner Lifetime Rossa

    Aug 3, 2002
    6,061
    Southeast USA
    Full Name:
    Mike Charness
    For 16" QV wheels, I think that 245/45 is a proper replacement as far as diameter. The 245/50's would be taller. See the spreadsheet below.

    By the way, if anyone wants this Excel spreadsheet to do their own calculations, I'd be glad to email you the file.
     
  12. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
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    Charles
    Mike--the actual size of a 245/45 will very a LOT between manufacturers--you will need to go to tirerack and look at the overall diameters or to the tire manufacturer website for the info
    I have a large spreadsheet that I put together before selecting tires to be sure of the correct size

    Also it is not advised to use different tire walls since they will flex differently, a 45 is a lot stiffer and quicker reacting than a 50 --this will alter the handeling of the car a lot-now, some people do take this into consideration in setting up their cars and select tires to give a partiular oversteer or understeer characteristic
     
  13. atlantaman

    atlantaman Formula 3
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    Mar 31, 2002
    1,726
    Roswell, Georgia
    Full Name:
    Charles
    sumitomo 245/50-16 ---25.8"
    bridgestone---25.7
    michelin---25.8
    michelin sportas 25.7"
    goodyear hp 25.6
    goodyear f1 25.7"
     

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