EM TuningChris Nott
Results 1 to 7 of 7
  1. #1
    347
    347's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2006
    Posts
    253

    new wheels question

    hi all
    i have fitted a set of 18" rs4 reps to my car .
    now i was expecting a slight drop in economy but it has drastically dropped .
    when i fill up the dis now reads 500 miles before fill up and the average fuel consumption is down to 37 mpg.
    has any one else experienced this , or have i got a fault ?
    vag com has scanned with no faults
    any help ?

  2. # ADS
    ADS
    Join Date
    Always
    Posts
    Many
     
  3. #2
    synthdood's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Oct 2004
    Location
    Amsterdam, Netherlands
    Posts
    286
    Is the diameter of the new wheels including the tyres different from the old ones? If that is the case you would need to recode the car to make it show the correct speed, distance and consumption since these figures are all measured by measuring the rotation speed/distance of the wheels.
    A3 sportback 2.0FSI sport, mauritius blue, proline, alu, interior light pack, rain&light sensor, cruise.

  4. #3
    347
    347's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2006
    Posts
    253
    thanks for reply
    the car is 04 a3 2.0 tdi ,
    original wheels were 17" parabolic with 45 profile , the 18" are in 40 profile , according to wheel supplier that is the correct profile ?
    how can i re code ?

  5. #4
    Randomjim's Avatar
    6th Gear

    Status
    Offline
    Join Date
    Aug 2006
    Location
    Sussex, Uk
    Posts
    2,747
    I've never heard of new wheels affecting the mileage like that. 40 profile is correct.
    Built in Germany, Perfected in England

  6. #5
    3.2 Ju's Avatar
    5th Gear

    Status
    Offline
    Join Date
    Jul 2007
    Location
    Yorkshire
    Posts
    1,195
    I believe my 19" RS4 reps knock the mileage down by about 2 or 3 mpg.
    I did weigh them in comparison to my original 17's and they were around 2.5kg heavier, The oem ones being about 22kg and the reps being 24.5kg there or there abouts.

    I would love my mpg to be 37 though as mine is currently 18 , still the noise makes up for it!!!
    S3 Sportback S-Tronic

    Previous
    2010 R36 Saloon in Biscay Blue
    2008 Red S3
    2005 A3 3.2 quattro S-line Sportback dsg Avus silver
    2005 A3 3.2 quattro Sport Sportback dsg Black


  7. #6
    347
    347's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Sep 2006
    Posts
    253
    yeah i know what you are saying regarding the weight of the wheel ,
    i didnt weigh them but the 18s were not mega heavy compared to originals .
    one of the reasons i sold my s3 was fuel consumtion and im heading back that way , now where did i leave them 17s. . . . . . . . .

  8. #7
    Teejay's Avatar
    Mellow Yellow

    Status
    Offline
    Join Date
    Jul 2007
    Posts
    303
    I have 18" R8 Replicas which with tyres are noticeably lighter than the 17's which came off. I also have noticed a drop in mpg. Recently been getting 39-40 rather than the previous 40-42.

    Unfortunately my new wheels coincide with a trip to the Audi stealers where an updated software version was uploaded - def more responsive, so could just be the way I'm driving

    May also be the fact that all recent miles have been covered with lights & wipers on.

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO