Anyone with 17" Cups have a solution??
#16
Great replies guys!
Not sure how much negative camber is too much for mostly street usage, but I would think that near -2 would kill tires quickly especially with the power I push out.
So bottom line... Will a 5mm spacer (with new lugs) fill the well better?
Not sure how much negative camber is too much for mostly street usage, but I would think that near -2 would kill tires quickly especially with the power I push out.
So bottom line... Will a 5mm spacer (with new lugs) fill the well better?
#17
Greg,
In addition to what others have said, tires can have an effect on perceived wideness. I'll bet that the black car has 255/40 rear tires. If you have narrower tires (with higher aspect ratio) - like the 245's you mentioned in your post, the car will sit higher and the wheels will look more inset.
Take a look at the pictures of my car in website referenced below - it has 255/40 rear tires.
I remember reading somewhere that the factory specification for 17 inch cup wheels is 205/50 (front) and 255/40 (rear).
Good luck!
In addition to what others have said, tires can have an effect on perceived wideness. I'll bet that the black car has 255/40 rear tires. If you have narrower tires (with higher aspect ratio) - like the 245's you mentioned in your post, the car will sit higher and the wheels will look more inset.
Take a look at the pictures of my car in website referenced below - it has 255/40 rear tires.
I remember reading somewhere that the factory specification for 17 inch cup wheels is 205/50 (front) and 255/40 (rear).
Good luck!
#19
Oh one more thing on the C4-
the Drive system is sensitive to the aspect ratio of your tires - you need to make sure you have an overall tire height that is equal to the stock diameter.
personally i would have a set of wheels made and not use spacers.
my 2 cents
the Drive system is sensitive to the aspect ratio of your tires - you need to make sure you have an overall tire height that is equal to the stock diameter.
personally i would have a set of wheels made and not use spacers.
my 2 cents
#20
May be I choose the wrong word for "damage', but what I ment to say is that usual the center line from the rims and the bearing should be somwhere in line, but I have seen cars [no Porsche I have to admit] who had bearings replaced in early stage by wrong wheel offset and spacers. It was only a warning what could cause some early wear from the bearings.
#21
C4TT, my OPINION here, if you don't need spacers for physical/mechanical reasons, and only want them for cosmetic purposes - forgo the idea!
Really, 5mm wouldn't make much of a visual difference...besides, I may be mistaken, but I've been through this myself, a 5mm spacer is difficult to come by...and I really don't think the factory studs or lugs are designed for them.
You said it yourself, think about the power you're pushing and the fact that you'd only have ~6 threads engaged.
If you're going to do it, install longer wheelstuds, Pelican sells them for about $47 for a pack of 10, 52mm studs. Even with no spacers, the added 7mm (really ~5mm) still allows proper seating of your aluminum lug nuts.
Also, -2deg. camber isn't too much for the street, while admittedly it's more than factory spec. -1 to -1.5deg. is a good "conservative" setting.
Really, 5mm wouldn't make much of a visual difference...besides, I may be mistaken, but I've been through this myself, a 5mm spacer is difficult to come by...and I really don't think the factory studs or lugs are designed for them.
You said it yourself, think about the power you're pushing and the fact that you'd only have ~6 threads engaged.
If you're going to do it, install longer wheelstuds, Pelican sells them for about $47 for a pack of 10, 52mm studs. Even with no spacers, the added 7mm (really ~5mm) still allows proper seating of your aluminum lug nuts.
Also, -2deg. camber isn't too much for the street, while admittedly it's more than factory spec. -1 to -1.5deg. is a good "conservative" setting.
#23
The 17" Cups fit just fine on a '90 C4 Cab with no spacers - using 205/50 and 255/40 tires. I have converted many 964s to this application. It is a great handling improvement. You can also use the 18" techno wheels with 20mm. spacers in the rear with no problems.
#25
What we commonly refer to as the "Turbo Twist" - the directional flat-faced wheels that came on the TT (that were hollow) and solid (heavy) versions appeared on the 993...they are available in both 17" and 18".
#26
Ahhhh HA!
I know them as the Turbo Twist.. Thanks Jeff!
By the way is that your spec racer in the sig? That must be a blast. I know a guy who races quite a bit, and who actually held a record for a while.. Guy name John Steinmetz.. Ring any bells?
I know them as the Turbo Twist.. Thanks Jeff!
By the way is that your spec racer in the sig? That must be a blast. I know a guy who races quite a bit, and who actually held a record for a while.. Guy name John Steinmetz.. Ring any bells?