Why not 16 x 8 wheels all around on 308 | FerrariChat

Why not 16 x 8 wheels all around on 308

Discussion in '308/328' started by BillyD, Mar 31, 2006.

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  1. BillyD

    BillyD Formula 3
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    I researched all the threads on 308 wheels & never found any pro or cons on putting 16 x 8 wheels on all 4 corners. Since I have 14 x 7.5 there now, going down to a 7 inch would seem to be the wrong way.
    comments please
    thanks
    Bill
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
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    Jan 11, 2001
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    IMO, the relative balance of the 308 coachwork favors a wider wheel/tire width at the rear (to go with the more substantial amount of bodywork).

    I, too, can't recall anyone posting anything about 8" all around on a 308B/S.

    Are you somehow forced into that situation?
     
  3. Dom

    Dom F1 Veteran
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    Nov 5, 2002
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    Try to do a search of the old ferrarichat archives. I seem to recall a discussion about this a long time ago. Don't remember the result, though.

    Dom
     
  4. WaltP

    WaltP Formula 3

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    Not totally sure but I thought there was a clearance problem with 8" in the front while turning.
     
  5. enjoythemusic

    enjoythemusic F1 World Champ

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    Use 8-inch front here and it is fine. Unless you REALLY drop the ride height could i see some rubbing problems, but then again if you dropped the height a lot odds are you will be using stiffer springs too so...

    Only get a rare, very small rubbing on the inside at center of the front of the tire well when the wheel is at FULL lock, but i use full lock so very rarely.
     
  6. Meister

    Meister F1 Veteran
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    I've got 8" on the front of my 308 and never had a problem with rub or interference.
     
  7. Joe G.

    Joe G. Formula 3
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    it ain't gonna look right

    fronts are gonna stick out
     
  8. chrismorse

    chrismorse Formula 3

    Feb 16, 2004
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    The original 7.5x14 rims and tires were flush with the fender on the left side, (looking down with the wheels aimed straight). For some reason, the left tire/wheel was back from the fender lip by 3/8" or so?? Just individual body variation??
    When i lowered the car, via QA-1s & stiffer springs, i had it too low and it would pull a fender lip on entering a driveway with stock wheels and tires. I jacked up the car a bit and the problem went away.
    Next, i changed to 7.5x18 rims and low profile tires, (front, rears are a different story), and i had the same fender clearance problem on entering the driveway on an angle. So, it appears that i need to raise the front just a touch more, but i would really like to use some scales to get the corner weighting right while i do this.
    Sorry to digress, 8 inch wheels on the front are probably the limit without sticking out past the fender and or hitting the lip, depending on squareness of the tire, ride height and individual body differences.

    hth,
    chris
     
  9. mk e

    mk e F1 World Champ

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    The biggest con I can think of is that although the 8s will fit in the front, 10s will fit in the back :)
     
  10. BillyD

    BillyD Formula 3
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    Ok,
    7 x 16 for front & 8 x 16 for rear. Now how about tire size? Again the old posts have a whole lot of opinions. Seems like the Goodyear F1 GS-D3 seem like the way to go but in what size 205/50 & 245/50??? or 225/50 & 245/50?
    Bill
    ps the track & dyno is getting closer ;-)
     
  11. Meister

    Meister F1 Veteran
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    #11 Meister, Apr 1, 2006
    Last edited by a moderator: Sep 7, 2017
  12. BillyD

    BillyD Formula 3
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    Thanks Scott for pics
    Bill
     
  13. Meister

    Meister F1 Veteran
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    No problem!

    Sorry I don't have more pics that might help you see the tire-fender relationship...

    I've still got 6' high snow banks up here and the 308 won't move for about another 6 weeks =(
     
  14. enjoythemusic

    enjoythemusic F1 World Champ

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    #14 enjoythemusic, Apr 2, 2006
    Last edited by a moderator: Sep 7, 2017
    No they don't if you have the right offset.


    Agree :)

    Pics below as i have 8x17 front and 9x17 rear, proper offset, Kinesis K27 rims. Tires are Mich Pilot SPort 2.
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  15. Matt308

    Matt308 Formula Junior

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    #15 Matt308, Apr 2, 2006
    Last edited by a moderator: Sep 7, 2017
    I have 17" Ronals on right now. 8" front, 9" rear. No problems with the fronts at all, the rears will touch the fender skirts on hard corners sometimes, but they look good.

    One thing to remember: Wider wheels and tires add rotating weight, which is a bad thing in underpowered cars such as my 308. Rarely is tire width an issue with cornering ability on 308s, and rarely is understeer an issue with 308s. So, why do we go with wider tires? In my case, it's a deep seeded need for coolness, but do YOU really need them? :)
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  16. Sean F.

    Sean F. F1 Rookie

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    Aren't the OEM wheels 14x7, not 7.5" ??
     
  17. enjoythemusic

    enjoythemusic F1 World Champ

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    i believe the Ronal weight in at 24 lbs or so and agree that is BAD news. VERY bad. Of course those rims are less money than, say, Kinesis where the 17-inch rims weight in at 17 lbs. As i recall, the stock magnesium rims were about the same 17 lbs, but feel free to correct me about stock as i am not 100% sure.
     
  18. snj5

    snj5 F1 World Champ

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    I think he has hit again upon an important point - you can have too much wheel/tire width. The example that was always quoted to me was to imagine a Lotus elan with 255 section tires - it would actually slow lap times due to frictional drag, weight and air resistance. It's about balance for what you want to do.
     
  19. Mike C

    Mike C F1 Veteran
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    Back to the original question regarding 8" wide tires all the way around. There's nothing "wrong" with having 8" all the way around. Dr. Tommy Cosgrove has four 8x16 track wheels, and guys who put 360 wheels on 308s usually put four fronts (7.5x18) on because of clearance issues on the back with the stock 360 rears (10x18).

    That being said, I like the handling and look of the 308 with wider wheels in the rear, the way the car was originally modified in the later years like for the QV.
     
  20. Matt308

    Matt308 Formula Junior

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    Too true, for track days I use 16" Gottis, 7" front, 8" rear. Never weighed them without the tires on, but with tires, one rear Gotti is 40.0 lbs, one rear Ronal is 55.7 lbs! yikes! That's a lot of rotating/unsprung weight! -m
     
  21. Auraraptor

    Auraraptor F1 World Champ
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    Wheel width is not as important as tire widths.
     

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