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Wheel Help/ Offset question

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Old 06-24-2016, 04:52 PM
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993Godspeed
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Default Wheel Help/ Offset question

Can someone help me out here...Please.

I bought a set of Cargraphic wheels "racing Model", these are supposedly for the 993 turbo but the offsets the seller gives me are:

8.5 X 19 ET 40
11 x 19 ET 27

What tire size can I run on these these wheels? Car is lowered on PSS10's.

the rear offset seems to really stick out... Here is a picture
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Old 06-24-2016, 05:42 PM
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I think the rears are too much ET For a Wide 993...
Old 06-24-2016, 06:10 PM
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993Godspeed
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Just spoke to seller, these were on a 993 turbo S. Just wondering what tire size I could go with. Thx
Old 06-24-2016, 09:04 PM
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chsu74
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I would ask pictures of wheels fitted on the car. You can fit into an ET40 so ET27 will stick it an extra 13mm.
Old 06-24-2016, 10:08 PM
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993Godspeed
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He's a very reputable member. Quite sure he wouldn't lie. I will just go with some 305s.
Old 06-24-2016, 10:37 PM
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I've fit 11" et33 on 18 with 285's, I'm not sure you'd get 305s on those. Fronts pretty aggressive too
Maybe try remeasuring the offsets to confirm those numbers
And it would be more than 13 mm, you have to add the width of the wheel (or half of it) as et 40 are for 10" wheels
So compared with stock wheels, they would stick out 13+ 25.4mm/2= 25.7mm for 285 tires
And I think the 19" wheels the tires are more square too..

Last edited by Basal Skull; 06-24-2016 at 11:04 PM.
Old 06-25-2016, 03:46 PM
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993Godspeed
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In other words 285 would be slightly my only option? I will get wheels and install without tires and see how much space I really have. Would suck to go below 295.... Then again there are worst things. Thanks for the help.


Originally Posted by Basal Skull
I've fit 11" et33 on 18 with 285's, I'm not sure you'd get 305s on those. Fronts pretty aggressive too
Maybe try remeasuring the offsets to confirm those numbers
And it would be more than 13 mm, you have to add the width of the wheel (or half of it) as et 40 are for 10" wheels
So compared with stock wheels, they would stick out 13+ 25.4mm/2= 25.7mm for 285 tires
And I think the 19" wheels the tires are more square too..
Old 06-26-2016, 12:06 AM
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600RR
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I can tell you for certain that 19" TechArt Formula wheels with ET 25 did NOT work on a 993 TT. The tires would not rotate because they were jammed against the fender. I could have rolled the fender, but decided not to do so. Could also change camber but was reluctant to play with it. I'd say you will have some challenges with the ET 27.
Old 06-26-2016, 01:26 AM
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Basal Skull
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My new rears are 11x19 et 40 and with the 305, they're pretty tight, especially the passenger side, et 27 going to be 13mm further out
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Old 06-27-2016, 05:30 AM
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I had the same wheels and offset for my 996 C4s, the rear offset of 27 was too aggressive in my opinion. Whenever I hit a bump, the tires would scrap against the fender.
Old 06-27-2016, 05:42 PM
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Originally Posted by agent325
I had the same wheels and offset for my 996 C4s, the rear offset of 27 was too aggressive in my opinion. Whenever I hit a bump, the tires would scrap against the fender.
What tires did you have in terms of size?
Old 06-27-2016, 05:44 PM
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993Godspeed
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Originally Posted by agent325
I had the same wheels and offset for my 996 C4s, the rear offset of 27 was too aggressive in my opinion. Whenever I hit a bump, the tires would scrap against the fender.
Originally Posted by Basal Skull
My new rears are 11x19 et 40 and with the 305, they're pretty tight, especially the passenger side, et 27 going to be 13mm further out
Yeah that definitely looks tight. Not sure what to do then, person told me these were specifically made for a 993 turbo. Ill see what I could do when I get the rims. Might not be able to put them on then...
Old 06-29-2016, 03:03 PM
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... also, isn't the ET 40 too aggressive on the front? IIRC, 18" ET40 stuck out about ¼ inch too much.
Old 06-30-2016, 10:06 AM
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Originally Posted by 600RR
... also, isn't the ET 40 too aggressive on the front? IIRC, 18" ET40 stuck out about ¼ inch too much.
We will see. I put in an email to cargraphic to see what they say.
Old 07-05-2016, 01:58 PM
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Found the wheels on another car. Dont know but seems like a nice fit.

https://rennlist.com/forums/993-foru...-993-a-39.html

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