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Looking for some advice...I'm new to the forum and i am considering installing spacers on front and rear. My wheels are 19 inch OEM lobster claw and the offset stamped on the rear wheel near the valve stem is 11-67
any advice on what spacers to get...i want it to look a bit more aggressive and tires to be flush or just outside of fender...whatever would look best but not over doing it. also any suggestions on what kind to buy. thank you for the help.
Most here recommend 7mm front and 15mm rear. Porsche oem is only spec @5mm f/r so be aware of that. Your narrow body car has 295 rear tires. You can easily go yo 305 like the WB cars. That is a 5mm increase right there! GL
I guess it will differ depending on wheels. I have the 305 mm turbo wheels on my Carrera S and with 8 mm spacers at the rear they are in line with the outside of the rear wheel arches / fenders. If I would go for 15 mm I think it will be a serious risk for contact. Sorry for the size of the images.....
Last edited by Racetwin2; Dec 16, 2014 at 02:05 AM.
I run the narrow body Turbo style wheels (67/57 offsets). I believe that the 15mm spacers in the rear position the wheels pretty much where the actual Turbo offsets would be.
Agree with everyone above, 7/15 seems to be the standard, that's were mine are with no problems and they don't look excessive. Some do 15/15 but you see warnings about scrub with 15s on the front, though I have never seen any of those substantiated. Maybe others can verify that... but I know 7/15 is safe and looks good.
Just curious, do the same spacings apply between 997.1 and 997.2? How about 2 and 4, non S and S, and so forth?
I'm just past three months with my car (still a newbie) and don't have a clue on spacers. At the same time, this Forum has sensitized me to how far under the fenders my tires reside.
Note: US DOT Federal regulations require space for chains. That is why the tires are il recessed. Are the US cars built differently on account of this?
There has been one mention of not using spacers on the track. What is the general consensus on this?
Is it best to change camber or toe in specs or spring settings in conjunction with the spacers?
This Forum seems to focus on the fraction of a % regarding performance and engineering. Is there any data on spacers relating to the rest of the car?
Regarding track use I think it is three things:
1: With large spacers you change the track width of the car wich might be negative when running on the race track. You might get undesirable behaviour of the car. At least with larger spacers.
2: With spacers you normaly offset the load on the bearings in the axle compared to std. With a large offset you will create much more torque on the bearing/axle assembly than was calculated when the car was built. Even worse when putting it on the track where loads are much higher than on normal road conditions. Smaller spacers should not make a huge difference however.
3: With large spacers you take the risk of contact between tire and chassi/wheel arch which could be really dangerous at high speeds with a lot of spring/tyre movement such as on the track
Normally the spacers should not impact camber, toe in or spring settings.
Regarding track use I think it is three things:
1: With large spacers you change the track width of the car wich might be negative when running on the race track. You might get undesirable behaviour of the car. At least with larger spacers.
2: With spacers you normaly offset the load on the bearings in the axle compared to std. With a large offset you will create much more torque on the bearing/axle assembly than was calculated when the car was built. Even worse when putting it on the track where loads are much higher than on normal road conditions. Smaller spacers should not make a huge difference however.
3: With large spacers you take the risk of contact between tire and chassi/wheel arch which could be really dangerous at high speeds with a lot of spring/tyre movement such as on the track
Normally the spacers should not impact camber, toe in or spring settings.
Thanks. Basically, spacers are cosmetic without much other upside. Perhaps I should adjust my views back from whence they started and appreciate the space reserved for tire chains!
Great information. This helps quite a bit. Thanks all for the responses. I'll post some pics. I just bought the GMP Performance 7mm/15mm set. The spacers do show a smaller drilled hole that i assume is for attaching the spacer to the hub??? can anyone confirm this and what screws are used for this?
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997 Spacers
