 Another Wheel Thread but I need your wisdom, Its going to be 18's after all.. |
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| JPB |
 Oct 10 2006, 07:15 PM
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#21
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The Crimson Rocket smiles in your general direction.  Group: Members Posts: 2,927 Joined: 12-November 05 From: Tapmahamock, Va. Member No.: 5,107  |
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| cbenitah |
Oct 10 2006, 08:07 PM
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#22
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
I know about the spacers, but where should I buy them and what size should I get? I will use the 10" since it fits (IMG:style_emoticons/default/smilie_pokal.gif) Wheel offsets are 50 mm for fronts and 55mm for rear
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| McMark |
Oct 10 2006, 09:02 PM
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#23
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Here's the measurements I took off a steel GT flared car. Every flare installation is going to be different slightly, and these measurements are rough. Don't forget to leave room for toe adjustment, etc. And now, without further ado....
Attached image(s) 
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| cbenitah |
Oct 10 2006, 10:32 PM
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#24
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
Thanks McMark,
For us europeans that would translate to 273.05 millimeter wide. So a tire 265 millimeter would be fine I suppose. Now how do I figure out the spacers? Do I need to physically have the wheel mounted or could one calculate that now? |
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| Aaron Cox |
Oct 10 2006, 10:40 PM
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#25
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
cant find the site im looking for... BUT this is semi ontopic
********************************************* Measuring Wheel Offsets Wheel/tire-to-fender clearance issues are more commonplace now due to the popularity of stuffing very wide tires into existing bodywork. To assist in minimizing fender rubbing problems, here is a guide to finding wheel offsets to ensure that your wheel-tire combination will fit inside your bodywork without rubbing. Backspacing is the dimension from the inner rim of the wheel to the mounting face and you will need to calculate this for proper fitment. 1) Divide your wheel's width by 2. This leaves you with the centerline of the wheel. 2) Find the backspacing by measuring the distance between the mounting face (where the wheel meets the hub) and the edge of the inner rim. 3) Suntract the backspacing distance from the centerline distance to find wheel offset. 4) Measure the distance between the mounting face on the hub to the fender. Use the measuring tape and a yardstick positioned vertically at the inner edge of the fender. 5) Measure the distance between the mounting face on the hub to the suspension. Use the measuring tape and a carpenter's square for accurate dimensions. Factor some extra space for tire clearance. 6) Measure the overall wheel width and with the above values, you can figure out what width wheel you can use and the offsets required for fender and suspension clearance. Please remember that you can mount several sizes of tires on a given wheel width so allow for that. Every tire manufacturer provides sectional and tread width values for every tire. 911 Fuchs Wheel Data Size Offset Backspacing Part # 4.5x15 42mm 100mm 901.361.012.01 5.5x15 42mm 112mm 901.361.012.04 6 x 15 36mm 112mm 901.361.012.06 7 x 15 49mm 138mm 901.361.012.05® 7 x 15 23.3mm 112mm 911.361.020.41 8 x 15 10.6mm 112mm 911.361.020.42 9 x 15 3mm 117mm 911.361.020.03 6 x 16 36mm 112mm 911.362.113.00 7 x 16 23.3mm 112mm 911.362.115.00 7 x 16 23.3mm 138mm 951.362.115.00(944) 8 x 16 10.6mm 112mm 911.362.117.00 8 x 16 23.3mm 125mm 951.362.117.00(944) 9 x 16 15mm 130mm 911.362.118.00 |
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| Aaron Cox |
Oct 10 2006, 11:03 PM
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#26
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
notice how 6" and 7" 911 fuchs have 112mm backspace?
thats the magic number... upto 120 will fit |
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| cbenitah |
Oct 10 2006, 11:04 PM
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#27
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
That was great AA... Although I'm a little confused still.. Do I need to get to 120mm? So if my offset is 55 I need a spacer for the remaing 65mm?
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| Aaron Cox |
Oct 10 2006, 11:06 PM
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#28
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
brain fart... but yes i beliebve so....
65mm is 2 9/16" so a 2.5" spacer |
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| Aaron Cox |
Oct 10 2006, 11:15 PM
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#29
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
im still not sure that is right... makes sense tho...
55mm from centerline, so total backspace - offset = spacer? 120 - 55 = 65 spacers http://cgi.ebay.com/ebaymotors/Porsche-2-5...035981295QQrdZ1 |
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| cbenitah |
Oct 10 2006, 11:19 PM
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#30
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
Is ther good and bad spacers? The spacer it self bolt on to the hub like a wheel? And then the spacer have studs coming out that you mount the wheel on?
Just trying to get an understanding on how it works.. Thanks AA, you are the man's brother |
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| Aaron Cox |
Oct 10 2006, 11:22 PM
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#31
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
technically that is an ADAPTER (5x130 to 5 x130)
unless you had SUUUPER long studs 100mm or so, then you could use slide on spacers and just mount em like normal... adapters save you from buying super long studs and swapping em out.... 5 more lugnuts to keep torqued.... you decide if thats for you.... AA |
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| cbenitah |
Oct 10 2006, 11:29 PM
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#32
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
what are people using though?
I want what is recommended by everyone here.. |
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| Aaron Cox |
Oct 11 2006, 12:14 AM
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#33
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
ok.. so the largest verbus brand studs around are 100mm...
"Wheel Stud, 100mm, 10 Pack H-331-100MMPK $88.80" from pelican.... but... are they long enuff? 100mm - (~10mm hub thickness) - (thickness of brake rotor ~10mm) - 65mm spacer = 15mm of thread AND it has to go thru the rim too!!! i think you are stuck with bolt on adapters.... |
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| McMark |
Oct 11 2006, 02:45 PM
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#34
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Based on my graphic/experience, you can run up to 150 mm of back spacing before the tire starts rubbing. If your tires overhang your wheels (think 205 tires on 5.5" stock wheels) then you must subtract that overhand from the 150 mm.
Here is one way to think about it: If you're going to run a 10" wide wheel (254 mm), and a 265 mm wide tire, you can figure out your maximum backspacing this way -- tire width (265) - wheel width (254) = 11 mm of tire overhang total, 5.5 mm of tire overhang per side. So you could run a 144.5 mm backspacing before you ran into the inner fender. But you'll want some "breathing room" so I would say 140 mm at a minimum. Of course, my drawing as well as tire specs aren't always 100% accurate. So you can't just go by the numbers. (IMG:style_emoticons/default/sad.gif) The numbers are only a rough estimate. If you're going to push the limits, be prepared to do some work, otherwise go with something a little more safe. |
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| cbenitah |
Oct 11 2006, 02:50 PM
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#35
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
safe in this sense would be a 255 tire on that 10" wheel? I think I understand what you are saying. Thanks for explaning though..
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| Aaron Cox |
Oct 11 2006, 03:05 PM
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#36
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
mark may be onto something.....
so you can go a tad bit more backspacing than 112-120... aim for 130 and call it good? show us the wheels you chose.... AA |
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| cbenitah |
Oct 11 2006, 03:10 PM
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#37
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
can't show you until they are on the car..But they are black and silver, same goes for the rest I have got for it (IMG:style_emoticons/default/biggrin.gif)
Guess that means that I'm in for another late night tech session. Where should I send those lug nuts (IMG:style_emoticons/default/laugh.gif) |
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| Aaron Cox |
Oct 12 2006, 02:32 PM
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#38
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
chris...
please check out the 'classic' wheel from CCW. 17, 18" sizes... http://www.ccwheel.com/files/home.php dude... completely sick. (IMG:http://www.ccwheel.com/files/gallery/porsche/930911/classic/4l.jpg) (IMG:http://www.ccwheel.com/files/gallery/porsche/930911/classic/2l.jpg) (IMG:http://www.ccwheel.com/files/gallery/porsche/930911/classic/3l.jpg) |
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| cbenitah |
Oct 12 2006, 02:37 PM
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#39
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Protected by the Swedish Maffia Group: Members Posts: 848 Joined: 16-August 05 From: San Diego, CA Member No.: 4,597 |
I take it that you did not like the preview I sent to you last night..
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| Aaron Cox |
Oct 12 2006, 02:40 PM
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#40
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
not at all... waaayy toooo big.
and these CCW wheels can be made in ANY offset for you... and that can mean NO spacers (save 400 bucks LOL) they can be anodized, polished or painted as seen above. they would look SINISTER in black on your car dude you can get em in half inch intervals of width too... 9.5" wide with 130 mm backspace :chubby: |
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