Materials to Maintain Your ZHP IIIII Hand Protection IIIII Tools to Maintain Your ZHP
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  1. #11
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    Jan 1970
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    Liberty Township, OH
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    15mm's will look good with 255's. Anything bigger...imho...will stick out too far...and will look weird. I got some pics of what 245's look like with 15mm spacers. Just imagine that...but about 5mm wider on the outside edge...
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  2. #12
    Join Date
    Jan 1970
    Location
    Jersey Shore
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    378
    Quote Originally Posted by danewilson77 View Post
    15mm's will look good with 255's. Anything bigger...imho...will stick out too far...and will look weird. I got some pics of what 245's look like with 15mm spacers. Just imagine that...but about 5mm wider on the outside edge...
    15mm's for the 255's in the back and the same for the 225's in the front?

    03 TiAg 330i ZHP
    -Alex

  3. #13
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    Jan 1970
    Location
    Redwood City, CA
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    767
    Quote Originally Posted by adb1028 View Post
    I know nothing about spacers so someone fill me in. I want as wide of a stance as possible with no rubbing or fender modification. Currently I'm on 135's, stock ride height, stock tire sizes. I may upgrade to a H&R sport cupkit sometime next year. What kind of spacers do I need?
    Quote Originally Posted by adb1028 View Post
    15mm's for the 255's in the back and the same for the 225's in the front?
    15mm will not work in the back for 255. I had 255 Star Specs with 12mm at stock ride height with 135s and it rubbed a lot. They are closer to 265 width, but I would run 10mm, max 12mm if you want to push it on a normal 255. What is the brand/model of your tires? If you're okay with rolling your fenders, that's another story.




    I think there may be some interest in this info about weight saving for wheels, so I'll post it here.

    Quote Originally Posted by zhp43867 View Post
    Wrong. I ran my car with DS2s and crappy light-ish tires (~43.5lb each corner) and my fuel mileage improved 2.5mpg and the car was much snapier. The fact that I did not have to get into it with the gas pedal so much every time I stopped I'm sure helped the fuel mileage.

    Typically, what you're saying is true, but BMW wheels in general (especially zhp wheels) are piggy heavy; let me lay down some numbers.

    OEM ZHP Wheel Weight:

    Rear= 28.5lbs x 2
    Front= 27.8lbs x 2

    Wheel weight= 112.6lbs

    Tire Weights (Star Spec)

    225/40/18= 25lbs
    255/35/28= 27lbs

    Tire weight= 104lbs

    Total weight= 215.6lbs
    Each front wheel= 52.8lbs
    Each rear wheel= 55.5lbs

    A lightweight setup

    Apex ARC-8 18x9" Square= 18lbs each
    Wheel weight = 72lbs

    Continental DW/Michelin PS2 235/40/18= 22lbs each
    Tire Weight= 88lbs

    Total lightweight setup= 160lbs
    Each wheel/tire= 40lbs

    That is a savings of 54.6lbs, or the equivalent of 546lbs off of the car by the most extreme rotational weight calculations.

    Lightest setup:

    Kosei K1/Apex ARC-8 17x8.5"= 16lbs each
    Wheel weight= 64lbs

    Michelin PS2 245/40/17= 22lbs each
    Tire weight= 88lbs
    Each wheel/tire= 38lbs

    Total weight = 154lbs

    Savings of 61.6lbs, or the equivalent of 616lbs off the car.
    I read in a couple places that 100lbs off the car can be a 10th off your 0-60, so potentially this could be up to six tenths off (obviously not), but take that for what you will.

    I will add that this cheap setup costs ~$1200 less shipping on tire rack, which is very tempting to me.
    - Derek

  4. #14
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    Jan 1970
    Posts
    15,433
    I've started a sprung vs. unsprung weight conversation -- just so we don't take this thread into two different directions.

    Unsprung vs. sprung weight discussion.

  5. #15
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    Jan 1970
    Location
    Redwood City, CA
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    767
    Dane told me to put it here leave me alone.
    - Derek

  6. #16
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    Jan 1970
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    15,433
    Haha. No worries.

  7. #17
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
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    Quote Originally Posted by zhp43867 View Post
    Dane told me to put it here leave me alone.
    Lol.....
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  8. #18
    Join Date
    Jan 1970
    Location
    Sacramento, CA
    Posts
    546
    Thanks Dane. I did the math by hand and came up with the same thing as the calculations so I should be good. Now I just need to measure the interior to make sure I am not going to rub on the mounts or something.
    -JJ
    2005 Zhp Sedan (Sold), back in the 2004 Allroad 2.7t

  9. #19
    Join Date
    Jan 1970
    Location
    Liberty Township, OH
    Posts
    37,935
    No.....to make sure your not going to rub on your coilovers/struts/shocks. You can see where your stock tire prolly has at least an inch of clearance in there.........

    If the offset moves your tire out.....typically.....you would be fine on the inside....unless you go with a drastically wider rim....

    If the offset moves it in....thats where you might need a spacer to kick it out a bit.
    Call Me Dane l 2/2004 330i ZHP l 18x8 ET45 BBS CK's wrapped with Michelin Pilot Sport AS3+ @ 245-40-18 l KW V1 Coilovers in front l KW V1 springs w/ Bilstein B8 dampeners in rear l BMW Performance Rotors l UUC StrutBarbarian l Racing Dynamics Rear Strut Bar l Jim Conforti Shark Injector l Light Birch Interior Trim l Bimmian Celly Mount l M3 Trunk Mat l l e90 Performance E-Brake & Shift Knob l M3 Tri-Stitched Boots l AL Headlight Retrofit with ZKW Lenses l CobyWheel Wrap w/M3 Stitching l LCM sw 4.5 triple blink and rear fogs l Maple Interior Trim

  10. #20
    Join Date
    Jan 1970
    Location
    Sacramento, CA
    Posts
    546
    Yeah, these are wider rims and have a slightly smaller offset so according to calculations it will come in about 6mm and out about 20mm. It should be perfect, I will most likely have to roll the fenders when I get come coilovers.
    -JJ
    2005 Zhp Sedan (Sold), back in the 2004 Allroad 2.7t

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