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    Thread: Staggered wheels on a quattro

    1. 02-09-2010 12:16 PM #1
      I might potentially run some staggered 18's on my 06 A4. they would be 18x78 up front and 18x9 in the rear. I know it is important that all the wheels/ tires have the same overall diameter as to not mess with the AWD system. What size tires do you think I should run? Thanks

    2. 02-09-2010 05:10 PM #2
      No one?

    3. 02-09-2010 06:26 PM #3
      I believe that the width doesnt matter just the over all diameter. But im no expert.

    4. Member Ollie18's Avatar
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      02-09-2010 08:22 PM #4
      Here is what I found searching the web:

      "This is what I did on my dads TT.
      18x8’s in the front with 225/45
      18x9’s in the rear with 245/40
      This setup yields the following:

      Front:
      225(mm) / 25.4(mm/in) = 8.858” <--width
      8.858” * .45 = 3.986” <--height
      (Assuming ~30-40% deflection at tire/tarmac contact location.)
      .65 * 3.986 = 2.591”
      (18” / 2) + 2.591 = 11.591”

      This is more or less your running radius of the front end.

      Rear:
      245(mm) / 25.4(mm/in) = 9.646” <--width
      9.646” * .40 = 3.858” <--height
      (Assuming ~30-35% deflection at tire/tarmac contact location.)
      .675 * 3.858 = 2.604
      (18” / 2) + 2.604 = 11.604”

      This is more or less your running radius of the rear end.

      The difference between the two would then effectively be about 0.013” or 13 thousands of an inch. This difference is so small (0.1%) that its effect is negligible. Under/over inflation can easily create differences of 0.500” which is 40 times bigger than the above calculated difference."

      That's what I sent you in the IM as well. I also sent you another IM. Just let me know either way.

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    5. Member Ollie18's Avatar
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      02-09-2010 08:42 PM #5
      here is the thread I quoted:

      http://forums.fourtitude.com/zerothread?id=2659656


      Modified by Ollie18 at 8:45 PM 2-9-2010

      11 VW Tig SE 2.0TSI - Pano - Navi - AvantGarde M368 19x8.5 ET35 - Goodyear Eagle GT 245/45-19 - H&R Sport Springs - Black Housing Hellas - Blacked-out Grill - Smoked Sidemarkers - 30% Tint (side/rear) 20% Tint (Pano)
      10 Volvo C30T5 - R-Design Spoiler - Badgeless Grill - Moda MD7 18x8 - Yokohama YK520 235/40-18 - 35% Tint - Magnaflow - R-Design Steeringwheel

    6. 02-18-2010 11:59 AM #6
      Running a stagger will keep you from rotating the tires. This may affect the life span of the tires.
      $.02

      One for each hand

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      02-20-2010 10:24 AM #7
      The point of wider wheels in the rear is to handle the greater power sent to the rear wheels of a car with rear wheel drive, or an AWD system that is rear-balanced.

      The stock Quattro is neither. Plus, the A4's drivetrain is ahead of the front axle, so there is very little weight on the rear axle. So putting wider wheels/tires on the back of the car will likely just make the car understeer more, which is very undersirable.


    8. Member l_prettyman's Avatar
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      02-17-2012 11:09 AM #8
      Quote Originally Posted by chrishart1 View Post
      The point of wider wheels in the rear is to handle the greater power sent to the rear wheels of a car with rear wheel drive, or an AWD system that is rear-balanced.

      The stock Quattro is neither. Plus, the A4's drivetrain is ahead of the front axle, so there is very little weight on the rear axle. So putting wider wheels/tires on the back of the car will likely just make the car understeer more, which is very undersirable.

      that or maybe its just for looks.

    9. 03-04-2012 01:00 AM #9
      hmmm.

      i run 15x7.5 on the front, and 15x8.5 on the rear.

      i have the only 9 second 4cyl Audi Quattro in N America. i run the same 8.5x24.5/15 M&H slicks on all four corners.

      the rollout/runout is what you need to match by 4% or better, when using a staggered rim on a Quattro car.

      i also run the rear diff 100% locked, and the center Torsen welded solid as well. there is no give in my setup. and my tire/rim choice has worked perfectly since day #1.

      and running staggered RIMS would have nothing to do with rotating tires other than having them dismount.remount/rebalance, as the tires would all be the same size. now if you were talking like 16's on the front and 19's on the rear, then yeah you would encounter problems and would have to match runout/rollout within 4% or better.

      but my setup is fine. being double-full locked sucks sometimes when pushing it around, but the rolling circumference is what you want to match....


    10. Senior Member TBT-Syncro's Avatar
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      03-05-2012 10:43 PM #10
      Quote Originally Posted by speeding-g6O View Post

      hey noob, stop replying to 2 year old threads.


    11. 03-05-2012 10:53 PM #11
      Quote Originally Posted by TBT-Syncro View Post
      hey noob, stop replying to 2 year old threads.

      hey hey//// someone else dug this up.... i replied 15 days after the last post

      (walks away now, chastised for ruhtardedness )

    12. 03-05-2012 10:55 PM #12
      but ya gotta admit, that ass is sportin some mean lookin rubber....

    13. Senior Member TBT-Syncro's Avatar
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      03-05-2012 11:24 PM #13
      Quote Originally Posted by speeding-g6O View Post
      but ya gotta admit, that ass is sportin some mean lookin rubber....
      yep. i'll be coming down to see you running this year. We just need a weekend with some blue sky forecasts, and i'll make the 5 hour drive.

    14. 03-05-2012 11:46 PM #14
      Quote Originally Posted by TBT-Syncro View Post
      yep. i'll be coming down to see you running this year. We just need a weekend with some blue sky forecasts, and i'll make the 5 hour drive.
      Sept 23rd is Pac Waterlands....

      and June 1 i think is BugRun.

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