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Great, hopefully mine will look like that and there will be no problems!
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Gary R.
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2009 Porsche Cayman S PDK/ 1997 PCA Spec Boxster Race car #154
Old 03-25-2007, 03:25 PM
  Pelican Parts Technical Article Directory    Reply With Quote #21 (permalink)
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996 tt wheels on a 930

I just bought a set of 18" 3 piece speedlines 8.5" et 40 front and 11" rear et 25 for my 930. These came off a 996 tt. Was told by Carlos at wheel Dynamics in CA that the only mod would be a 6.5MM spacer for the fronts to clear the brakes. I am therefore assuming the 1" stock spacer stays put. My car is in storage at the moment so I have no way of verifying this. I will post once I get my car.

Cheers
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Old 03-25-2007, 04:08 PM
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I am sproting 06 996 TT factory optioned techno twist on my flared 911.... lots of nice tires to choose from, and there really is something to say about filling you wheel wells....

- took some big adaptors (not spacers) to fit....
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Old 03-25-2007, 05:14 PM
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Here is what I have found so far, and again my wheels are 18x11-45 offset and 18x8-50 offset OEM 996 TT wheels (what I was told anyway).

With a front 1" bolt on adapter the wheel sits too deep in the well, looks horrible. If you remove the OEM 1" spacer from the rear and try and use the 2" bolt on adapter you quickly (or not so quickly) find that the unthreaded portion of the OEM lugs is about 1/4" too long and the spacer can not be tightened down against the hub. Using what I have, I took the 2" spacer and used it up front. This put my wheel/tire at the outermost edge of the wheel well when I lowered the car and put weight on the wheels (it's on a lift). I then put BACK the OEM 1" spacer and bolted on the 1" bolt-on adapter. This places the rear wheel/tire out on the edge also. Both *may* be perfect but I won't know until I get the car running again, hopefully this coming weekend.
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Gary R.
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2009 Porsche Cayman S PDK/ 1997 PCA Spec Boxster Race car #154
Old 04-04-2007, 05:37 AM
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Gary, you need to get the centre of the new front wheel exactly where the stock one was.

As for the rear, I don't see why you can't cut extra thread with a die on your exsisting studs.
Anyone know if that is OK or not ?
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg

Last edited by NathanUK; 04-05-2007 at 03:40 PM..
Old 04-05-2007, 02:56 PM
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Quote:
Originally posted by NathanUK
Gary, you need to get the centre of the new front wheel exactly where the stock one was.

As for the rear, I don't see why you can't cut extra thread with a die on your exsisting studs.
Anyone know if that is OK or not ?
I don't see any problem with cutting the threads and using the 2" on the rear but the 1" in front looks nasty.. I'll mount my CCW/Hoosiers (no spacers at all) and see where they sit. Why is it a problem to move the front wheels out the extra inch to fill the wheel well?
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Gary R.
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Old 04-05-2007, 04:38 PM
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to use 996TT OEM wheels you ned to leave the 28MM stock spacer in place in the rear (You can go slightly largerto 32MM with custom spacers and stock studs - NO ADAPTORS) and up front you need to use another set of factory rear 28MM spacers with the longer 52MM wheel studs. This is very easy to do up front - 30 minutes a side max to remove the hub, press out the old studs and press in the new ones. I have 996TT wheels on my car for the past 2 years. Everyone I asked at a few of the nationally recognized wheel / tire venues told me WRONG. I had to find out for myself through trial and error... I"ll post pics later if neeed. Sorry for the late reply but I hope this helps. This has ensure a nice smooth, shimmy and vibration free setup on my 930. Make sure you adjust your fron't whel bearings properly so that they are not too loose or too tight. Use quality, high pressure wheel grease while you are in there and repack the bearings...
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Old 04-05-2007, 05:21 PM
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The front wheels centers need to be exactly where the stock ones are so you do not alter any of the geometry. The rear doesn't matter as they do not steer. The only thing that matters at the rear is the wheelbase and that will not be altered by wheels or backspacing.

The advantage of hub adapters is you can easily revert back to stock at any time.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 04-07-2007, 02:43 AM
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Finally got around to installing a set of 18" Speedlines I bought a while ago on the car. As I understand it, they were on a 996. I left the stock 28 mm spacer and no spacer was required in the front. Front rims are 8.5" 40 et, the rears are 11" 25 et. No rubbing or issues with them. The car handles much better and the ride is still good. .



Cheers
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1986 930 Coupe Silver
1993 968 Coupe Black
2014 Ram 4 x 4 5.7L Hemi Sport
1999 Cobalt 23LS
2001 HD FLSTC (Carb)
Old 05-14-2007, 04:58 PM
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