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Thread: E38 M Par tire size on E34

  1. #1
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    Default E38 M Par tire size on E34

    What do you guys think of this tire size set up on stock suspension?


    FRONT: 245/40/18
    REAR: 275/35/18
    Last edited by ///Sniper535; 04-26-2009 at 06:46 AM.

  2. #2
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    Are you sure the 275's will fit ? Do you expect to run spacers ? M-Pars are pretty hot. You'll be getting one sexy ride.

  3. #3
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    no spacers, i'm trying to see what will be best for the rear 9.5" wide wheels.

  4. #4
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    The bmwe34.net website suggests 265 35 18 as the largest 18 inch wheel for the e34, and 275 30 19 for 19 inch. The offset of the e38 is 23mm, where the e34 is 20mm except for the M5. This means the wheels of the e38 would be about 1/8" farther in. And since the wheel is 9.5 inch wide, this brings it closer to the struts.

    I have not test fitted any, so I'm no real help except for the theory. It would be ideal to have someone who has 'em to chime in, or for you to test fit the rim without rubber at least.

    You might try this forum:
    http://forums.bimmerforums.com/forum/index.php

    There's a specific thread for wheels, and another for the e34 that is much more active.

  5. #5
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    I have 265/35 on my rear m parallels. I had to roll the rear fenders to avoid rubbing with weight in the car.
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  6. #6
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    Can someone tell me what would be better for the 8"/9.5" staggared set up.

    245/40/18 all around
    or
    235/40/18(F) & 255/35/18(R)

    Thanks, I cant make a decision, it seems though that the 245/40/18s are more common tires.

  7. #7
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    Quote Originally Posted by ///Sniper535 View Post
    Can someone tell me what would be better for the 8"/9.5" staggared set up.

    245/40/18 all around
    or
    235/40/18(F) & 255/35/18(R)

    Thanks, I cant make a decision, it seems though that the 245/40/18s are more common tires.
    Neither.

    I have staggered E39 M-Pars (8"/9") and use 235/40-18 front and 265/35-18 rear. I suggest you use the same, since I don't experience any rubbing and 255/35 has smaller diameter than stock.

    Here's how it looks like on my car:
    BMW E34 528i, M52B28 + M50 manifold, Remus exhaust, ///M Parallel Spoke 18" rims

  8. #8
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    Isnt the offset different vs E38 and E39 M Parallels?

  9. #9
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    Quote Originally Posted by ///Sniper535 View Post
    Isnt the offset different vs E38 and E39 M Parallels?
    E39:
    - front: 235/40-18 ET20
    - rear: 265/35-18 ET24

    E38:
    - front: 235/50-18 ET13
    - rear: 255/45-18 ET25

    As you can see, in the front there is 7 mm difference, and in the rear only 1 mm. I'm not sure, but you might need spacers in the front. If there's rubbing in the rear, you can always roll the inside of your fenders.
    BMW E34 528i, M52B28 + M50 manifold, Remus exhaust, ///M Parallel Spoke 18" rims

  10. #10
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    Factory tire size on E34 M-Pars (18x8et20 & 18x9et22) was 245/40/18 all around. Unless 245 is too narrow for the 9.5" width E38 rim I'd run 245/40/18 on all corners.
    Cosmos Black/Black 1995 540iA M-Sport
    BMW Individual Exclusive Edition, 1 of 65 total, 9/25/95 Build

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