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Wheel spacers for 575?

Discussion in '456/550/575' started by F612, Jun 9, 2020.

  1. F612

    F612 Formula Junior

    Feb 5, 2018
    372
    Leeds,AL
    Full Name:
    David D. Hood
    I am aware of wheel spacers used to widen track, both frond and rear.
    Do you use them?
    Why?
    What size works best with 19” front and rear wheels?

    thanks in advance!
     
  2. NE550

    NE550 Karting
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    Mar 23, 2017
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    Omaha, NE
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    Dave
    #2 NE550, Jun 9, 2020
    Last edited: Jun 9, 2020
    David, I have Hill Engineering 20mm "Type 1" spacers + long bolts on the rear of my 550. Bought them from Ricambi America. https://www.ricambiamerica.com/ws020-2-x-20mm-spacers-10-bolts-type-1.html. These are not cheap but excellent quality billet aluminum hub-centric spacers. The bolts are stainless steel and they have titanium bolts available for extra cost. These spacers work great and eliminate the "sucked in" wheel/tire look at the rear.

    You'll see on the Ricambi website there is also a 25mm "Type 2" spacer, but they are bolt-on spacers (e.g., you bolt the spacer itself the wheel hub, then the wheel bolts to the spacer) which I don't like in principle, and the 5mm of extra width really isn't necessary.

    These will works up front, too, and there are thinner spacers available (11 and 15mm), but there really is no need for front spacers on 550s/575s.
     
  3. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    David- I have had Hill Engineering Type 2 (spacer bolts to hub, original wheel bolts thread into hardened inserts) 25 mm spacers on the rear of my 575M through three sets of wheels. Fronts did not need them, but the rears look much better and they add to the rear track. Do not affect suspension alignment and only marginally increase unspring weight. Made up for weight by titanium wheel bolts. I do not like the longer bolts on the Type 1 spacers.


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  4. F612

    F612 Formula Junior

    Feb 5, 2018
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    David D. Hood
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  5. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    Dave- Mine was the only 575M in New Mexico for most of the time I was there, so easy to get that tag.
     
  6. Themaven

    Themaven F1 Rookie
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    Nov 2, 2014
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    Darius
    I can see how they improve the look of the car. Do they make any noticeable difference to the drive through the wider track?
     
  7. Auraraptor

    Auraraptor F1 World Champ
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    Sep 25, 2002
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    Mild increase in understeer is the most pronounced side-effect
     
  8. tazandjan

    tazandjan Three Time F1 World Champ
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    Understeer is not an issue with FHP, plus the wider rear track tends to make for more stable braking.
     
  9. white out

    white out Formula Junior
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    Mar 3, 2010
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    Nick
    I'm currently running an OMD 20mm spacer in the rear with extended bolts. It gives the rear at about the same offset as the front.

    To bring the sidewall flush with the fender:
    Rear: 40mm
    Front: 36mm

    So there is plenty of room to play with as aggressive of an offset as you wish.
     
  10. bruzzifumi

    bruzzifumi Rookie

    Mar 27, 2015
    31
    Hi David, 20mm for me too, at least with OEM 18" wheels. IMHO they don't look "aftermaket widened", but they fill the arches just right. Before and after picture may help you...
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  11. bruzzifumi

    bruzzifumi Rookie

    Mar 27, 2015
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  12. NE550

    NE550 Karting
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    Mar 23, 2017
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    Haven't noticed a lot of difference, Darius. Maybe a slight bit more understeer when really hustling the car through a fast sweeper. Otherwise day-to-day no difference.
     
  13. F612

    F612 Formula Junior

    Feb 5, 2018
    372
    Leeds,AL
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    David D. Hood
    Thank you all.
    I like the esthetics but would like some more comments on dynamic affect, please.
     
  14. bruzzifumi

    bruzzifumi Rookie

    Mar 27, 2015
    31
    I can't help you that much on this...I usually drive it slower than my grandmother...:oops:...I didn't note any handling difference.
     
  15. tazandjan

    tazandjan Three Time F1 World Champ
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    Jul 19, 2008
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    The basics on wheel spacers are that you will increase grip on whichever end you add the spacers. For the rear spacers we are talking about, there will be more grip on the rear and the front will be unchanged. Near the limit, that will tend to make her understeer, but at a higher cornering limit than before the spacers were added. Suspension geometry is unaffected. There may be slightly more wear on suspension bushings because of the increased lever arm effect.
     
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  16. 308 GTB

    308 GTB F1 Veteran
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    Feb 7, 2002
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    Barry Wolinsky
    Right, Terry.

    Here's a table that summarizes factors that affect oversteer and understeer:
     

    Attached Files:

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  17. tazandjan

    tazandjan Three Time F1 World Champ
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    Barry- Very handy. Saved it to hard drive.
     

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