348 maximum wheel offset | FerrariChat

348 maximum wheel offset

Discussion in '348/355' started by Samy, Mar 29, 2006.

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  1. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Hello,

    i've searched the board for some information on the maximum offset i can use on a 348. But didn't find anything detailed. I need to know what offset i can use without changing something on the chassis body. Does this combination fit ?

    Front :
    8,5 " x 19" with offset 41mm and 235/35-19" tires.
    Rear :
    9,5" x 19" with offset 45mm and 285/30-19" tires.

    Does that have enough room between the wheels and the chassis of a 348 gts?
    ________________________
    Samy
     
  2. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Noone knows offsets? What offsets do you drive? And wich offset looks ok, to define ok the wheel doesn't look over the fender but is also not deep in the fender .. its right on the end of the fender in one line. But i don't know wich offset will do that. front offset 31mm? and rear 45mm?
    _________________________
    Samy
     
  3. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways

    http://webpages.charter.net/aircover/348/1994Ferrari348Spider.html#Wheel
     
  4. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    But theres only the standard offset numbers. I'm looking for the front and rear offset in wich the wheels align with the fender end. That the wheel is not to much in the wheelhousing and not out of the housing.
    _______________________
    Samy
     
  5. dasadrew

    dasadrew Formula Junior

    Aug 1, 2004
    683
    Germany
    Full Name:
    Drew H.
    It's not just offset and rim/tyre size. If you're aiming to get extremely close to the outer surface, the shape of the tyre will play a rôle too. Also suspension set up and spring/shock settings. Too many variables to give a definitive answer.

    Also, are you going to fold in the wheel arch flange?

    To help out, lot's of people fit the 360 Modena wheels and tyres and there are lots of pics on the forum. These are

    7,5" ET31,5 Front
    10" ET39 Rear

    On these conversions, the rear tyre is very slightly wider than the bodywork. (doesn't look right IMHO)

    US late model rear 348 wheels are 9" ET43 which is the common 25mm less offset usually fitted in Europe in the form of wheel spacers. If you look for pics of standard US Spiders, you'll see how that looks. I think Henkie posted lots of detail pics of before and after with spacers front and rear.
     
  6. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    #6 Samy, May 1, 2006
    Last edited by a moderator: Sep 7, 2017
    Ok on the rear i think 9,5" with 45mm Offset look good. But on the front i dont know. I have 8,5" with et31 or is that too much. I saw a company selling a wheelset with 9" et25 front and 10,5" et35 rear. On the photos that look ok. But maybe the pictures are not from that wheel setup?
    ________________________
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  7. dasadrew

    dasadrew Formula Junior

    Aug 1, 2004
    683
    Germany
    Full Name:
    Drew H.
    #7 dasadrew, May 1, 2006
    Last edited by a moderator: Sep 7, 2017
    The ones in the pic below are supposed to be
    8 J x 18 ET 34
    10 J x 18 ET 52

    I have a new set of the same design with adapters which I don't want to fit on my 348 as they're too wide. They work out at

    8 J x 18 Zoll ET 31 (ET11 with 20mm Spacer)
    10 J x 18 Zoll ET 42 (ET22 with 20mm Spacer/Adapter)
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  8. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Did you have some room left in front for 10-15mm spacers? And on the red 355 the front wheels supossed to be 9"x18" with ET25. Did they look like that .. wider then your 8"x18" ET31? Because i can get a wheel 8,5"x19" ET33 and don't know if that would fit without modifying the fender.
    ____________________
    Samy
     
  9. dasadrew

    dasadrew Formula Junior

    Aug 1, 2004
    683
    Germany
    Full Name:
    Drew H.
    To be honest, the whole set up was too wide for me, so I didn't follow it up. I never got tyres fitted, so I'm afraid I can't help much with "experience".

    It's all personal taste, but as I even think the red 355 set up is far too wide, you can imagine that the wheels I bought were going to be beyond my personal taste. In actual fact I ordered a set like the with the dimensions of the red 348 but the company delivered the ones listed above. Still going through the courts to get the company to take them back and refund!
     
  10. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    Ah ok i thought that is your car and you have two sets of the wheels.
    The second wheelset is also for me to wide with et11 and et22 at the rear.That is wider as the wheels on the 355.
    _______________
    Samy
     
  11. 4RECCCXLVIII

    4RECCCXLVIII Karting

    Oct 10, 2004
    84
    East TN
    Full Name:
    John
    Just because the wheel looks ok and fits with a said offset does not mean that it will be correct for the car. Using offsets that are too far from factory spec may have an adverse effect on the wheel bearings.
     
  12. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    I don't mind for the wheel bearings. I have other cars with much smaller bearings and much lower offset without problems. And if i change it.
    _______________________
    Samy
     
  13. davey_jones

    davey_jones Formula Junior

    Sep 28, 2002
    781
    wherever it's sunny
    Full Name:
    Dave
    There's no way those 355 fenders won't get rubbed real good!
    Look how close it is!
     
  14. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    I don't know the angles of the pictures are too bad to see it... On the picture from the rear .. the rearwheel maybe. Maybe it stopped befor it hit the fender because it has negative chamber and goes into the suspension endpoint befor the wheel is to high. The company sells this wheelset for this car with tüv so it should have minimum 3mm room in the endposition. But the 355 has wider wheels then i'm looking at .. i don't know if 8,5" with et31 on the front will fit.
    ________________
    Samy
     
  15. BT

    BT F1 World Champ
    Lifetime Rossa

    Mar 21, 2005
    15,291
    FL / GA
    Full Name:
    Bill Tracy
    I don't see that 355 going more than about 5 miles without rubbing the rear tires at least.
    Both examples look nice but are probably too wide for practical use. Unless you plan on going over every bump at 2 mph.
    BT
     
  16. chrisx666

    chrisx666 Formula Junior

    Dec 6, 2004
    562
    YorkshireUK
    Full Name:
    Chris B
    Or five miles before being pulled over by the cops (over here ayway).
     
  17. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    #17 Samy, May 2, 2006
    Last edited by a moderator: Sep 7, 2017
    I don't know by the pictures. I would say it will fit. But i don't thrust the info on the dimensions of the wheels. For that dimensions it looks to small. On the pictures the wheelsetup is align on one line with the fenders and the wheels have much more space then the tüv/police needs. It doesn't look that much different then the 355 setup. Don't have better pictures. But the point is if i thrust the info that the wheels are 9" et25 in front on the 355 pictures then the 8,5" et31 must fit without a problem but if on the picture are only 8" et35 or something then it won't fit. .... so does 8,5" ET31 in front fit is the question :) ok i think i must try and if it doesn't fit i must make it fit.
    _____________________
    Samy
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  18. Topgun T/S 38

    Topgun T/S 38 Karting

    Jun 17, 2005
    85
    Cincy, Oh
    Full Name:
    Dan
    I went with the 18/19's on the stock offset with slightly wider rubber. Had the car lowered and set for that application. It not only handles significantly better but looks better as well. It "fills" the wheel well without rub and provides a more dramatic and aggressive look and feel. Also had some chine at higher speeds which was also eliminated. I can provide all the details if you like, the guys that set it up definitely knew there stuff ( and were priced accordingly....ouch). I was so happy with it I had them do the Porsche as well.

    I'd post a pic if I were smart enough to figure out how to use the resizing software but alas, tis not the case.
     
    ILLA NOIZ likes this.
  19. PassionIsFerrari

    PassionIsFerrari Formula 3

    Aug 15, 2004
    2,454
    I run the 360 wheels on my 348....Fronts are perfect putting the wheels 15mm wider then stock....Backs are a little wide although I still think it looks really good, but the backs go out 41mm wider then stock....most spacer kits for the rear of the 348 only go out 25mm wide....I have never rubbed tires, never...
     
  20. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    The 360 Frontwheel comes close to the wheel i want to fit. Did you have pictures of the car and of the frontwheels in the wheelhousing? How much space is left there? My wheel would be 11mm wider in front then the 360.
    _____________________
    Samy
     
  21. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    #21 Samy, May 9, 2006
    Last edited by a moderator: Sep 7, 2017
    Today i fitted the wheels and i had lots of space left so i used bigger spacers. Best fit i got with 8,5"x19" ET22 front and 9,5"x19" ET35 rear.
    Now i only need to choose the right color again nero or rosso :( i don't know.
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    Samy
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  22. dasadrew

    dasadrew Formula Junior

    Aug 1, 2004
    683
    Germany
    Full Name:
    Drew H.
    Are the ET's you mention the final offsets including the original wheel offset and the offset-reducing spacer effect?

    As I'm going through the same dilemma with my 348, any chance of posting some pics which show accurately the final position of the wheels in the housings looking exactly along the side of the car? i.e. how much the tyres extend outside the fender (or sit within the fender).

    Drew
     
  23. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    That should be the final offset. The wheels doesn't extend outside the fender and they are near 0mm inside the fender they are in one line with the chassis.
    _______________
    Samy
     
  24. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,216
    Mount Isa, Australia
    Full Name:
    Pap

    The wheels looks tuff Samy. And go the rosso duco ;) It's the only way to go :D
     
  25. Samy

    Samy Formula Junior

    Dec 2, 2005
    603
    The problem is i can't really imagine how it would look like in red i only know this from pictures but on pictures black looks not as good as black in real. So i don't know if red in real is better then black. Black in real looks better then red on pictures. When i compare only the pictures between picture red and picture black then red is better .. maybe i use a coin to choose. But i have some time left to choose till the engine is in and running.
    ________________________
    Samy
     

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