first we need to know more is it an sc? does have 930 flaires? Kevin

912e;)

flares are part of the plan. yes, I know it will be a slug running wheels that wide... but eventually i plan to give it the power to move it along faster.

Now that we know it is a 912E, don't even think about it until you have at least 300hp. My Dad has a 912E and 16x7" fuchs are hard enough for it to turn, with 18x10" wheels you might as well just drive around with the parking brake on. Up to about 200hp a 205 tire is all you will ever need on the street.

Pretty much worry about your flairs first when you get that set then decide what your gonna do with wheels, There have plenty of great cars here that started as a 912, build it how you want, this is my 82 sc, it has et52mm offset wheels with 18x10 and 18x8.5 wheels 3 inch rear spacers 2.25 front. Iys best to measure the air gap when you have the body done, Kevinhttp://forums.pelicanparts.com/uploa...1290909916.jpg

I've driven a 912e with 8s and 9s and it didn't feel that bad. i'm all about design. Not the the kind of design like "race cars go fast, I want my car to look like a race car", but the kind of design where half of my ideas i've never heard of anyone else doing. A subaru eg33 is somewhere in the future. as well as power steering. if nobody here has anything more to contribute than "forget it", then i'll take my build somewhere else.

ps... while I'm all about design, I'm all about driving too. my current daily driver is a manual 04 v70r and before that was an manual 08 gti. and the shortest route to the highway for a usually twice weekly commute is a very nice strech of twisty driving road which makes the 150 mile commute actually enjoyable.

I wasn't trying to put down your project merely recommending you sort out the drive train before worrying about wheels, a strong 912E only puts 80hp to the wheels and imo needs all the help it can get to not feel incredibly slow. If all you want is the performance look, by all means do what ever you want but as has been discussed already, your final power levels, gearing, and taste in flairs will dictate what size and width tires you can or want to run. As someone who has learned the hard way by doing things 5 or more times as the car evolves, it is best to have some prior planning in place when considering modifications.

performance will come when i'm in an automotive techonology program. currently i'm in a autobody repair program.

If i said 10.5 front flares and 11 in the rear would you be confused?

There is a lot more to a flare than just the size. 930 flairs are referred to as 9" and 11" with short hood RSRs being either 11" and 13" or 11" and 15". However, any of the factory style flairs are designed for roughly a 25" tire. The shortest tire you will be able to fit on a 18X10" wheel is 26" tall and beyond that ride height compromises will need to be made to keep it from rubbing on a factory profile flare.

Again you can do what ever you like, and I dont mean it mean either, I love hot rodded p cars, I responded because no one else was. I have 930 flairs which will be a better flair, going to an 12 your probably gonna have to have wheels made by some like ccw. Or you may end up with 4 inch spacers.



Measuring an air gap is easy, put the wheel and tire under the car place it where you think looks the best measure from the back of the wheel to where it bolts to the car and you will have the spacer you need, if you go with someone like boothe adapters you dont have to have a Porsche bolt pattern that bolts to the wheel, just the car side, make sure they are hub centric or you will get a vibration.

Sometimes you have to be pretty think skined here as there is alot of purist,
shrug them off many of us hot rod our cars, do a search there is a guy that just put a subby motor in a 911 good read, Kevin

what should i expect for adapter width?

There is a good reason you don't hear about spacer failures very often.

The wheel holding components are heavily over sized. It is designed for frequent use by non-professionals not using torque wrench, and still with lots of safety margin. The part of the wheel load that comes from the engine can easily be handled by he 4xM8 (i think?) that is holding the CV-joint.

The force 5 pieces of M14x1,5 studs in 12.9 steel can hold is theoretical over 60 metric tonnes!

there are three different basic offsets you will have to decide which wheels you want

early 911pre 89 had a -negative set which will get youthe smallest spacer

1990up the offsets vary more usually in the 50+mm range you will need the biggest spacers


custom offset no spacer

so it is really hard for anyone to say what spacer you will need untill you come to a conclusion what flairs and wheels you will use, even then you still need to measure the air gap to get the exact look your looking for, Kevin