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Wheel sizes

Discussion in 'Bodywork, Tyres, Wheels & Trim' started by mario2857, Oct 12, 2017 at 7:03 PM.

  1. mario2857

    mario2857 Active Member

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    2006 CLK200 Kompressor convertible.
    Hi
    Need some help. Thinking of changing my wheel rims. But know nothing about the sizing and do not understand what the ET is on a wheel so need your help please.
    My car is a c250 Estate on a 14 plate, which I believe is a W204. I have taken a wheel off and the following is inside.
    ET 58......8.5J x 17 H2
    Merc part number is A2044012400

    I am looking to buy the following

    Aspect Ratio is 40 + 45
    Rim Width. 7.5J & 8.5J

    The tyres on both set of wheels are the same size, just worried about rims. So please tell me if they will fit my car..

    Many Thanks in advance.
     
  2. LostKiwi

    LostKiwi Senior Member

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    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500, 04 Smart Roadster Coupe
    Nowhere near enough to go off there.
    What's the rim diameter of the new wheels, ET and exact tyre sizes you want to use?
    Also what size tyres do you have currently?
     
  3. Wighty

    Wighty Senior Member

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    The 7.5j is an inch narrower wheel than 8.5j so I certainly don't think the same tyres size should be on it as the 8.5j
     
  4. OP
    mario2857

    mario2857 Active Member

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    More info

    New wheels are ET 47
    Tyre size on new are same as what I have on my current wheels.
    225/45/17........245/45/17
    Hope this helps
     
  5. turbopete

    turbopete Senior Member

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    sounds like the Sport pack wheel set up so fronts will be 225/45x17, rears will be 245/40x17

    you need the 40 aspect ratio tyres on the rear or the traction control, cruise control etc will have a fit and not work as it should.

    new wheels will sit out 11mm further. you will need to check clearances, and check that the bolt hole size is the same
     
  6. LostKiwi

    LostKiwi Senior Member

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    Are you sure on those rear tyre sizes?
    I would expect 245/40/17.

    Rims....
    Front rim is 1" narrower so 1/2" per side. ET is 11mm further out from car centre line so the front near enough cancels out.
    Rear will sit 11mm closer to the rear arches.
    Tyres...
    If the rolling circumference is within 2% front to rear they should be ok.
     
  7. OP
    mario2857

    mario2857 Active Member

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    Yes sure of tyre size

    So it looks like they will fit?..
     
  8. LostKiwi

    LostKiwi Senior Member

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    Not if the rears are 245/45s
     
  9. LostKiwi

    LostKiwi Senior Member

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    Also what are the new wheels off?
     
  10. OP
    mario2857

    mario2857 Active Member

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    Your Mercedes:
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    The advert say it From anyother Mercedes C class.
    Wheels- AM010
    A2044014502 on front with 225/45/R17 tyres

    Rear Wheels- AM011
    A2044014602 with 245/40/17

    Does this help
     
  11. LostKiwi

    LostKiwi Senior Member

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    It does. They should fit fine.
    The reason the car they came off is important is that there are two variants of books used and you cannot use early (w203) wheels on a 204 or later.

    IF you have 11mm clearance to the arches you're good to go.
     
  12. OP
    mario2857

    mario2857 Active Member

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    Great thanks so much for your help.
     
  13. Wighty

    Wighty Senior Member

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    On my Clk which isn't on the drive to check at the moment , I am pretty sure that the 245/45/17 is the rear and the 225/40/17 is on the front , as I said I'm not 100% till wife gets back later ??
     
  14. LostKiwi

    LostKiwi Senior Member

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    No chance - that would really upset ABS/ESP/Cruise.
     
  15. Wighty

    Wighty Senior Member

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    You are right , just checked on a tyre website , got myself back to front :) . 45 front and 40 rear .
     
    Last edited: Oct 13, 2017 at 9:38 AM
  16. GlosRichCLK

    GlosRichCLK Senior Member

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