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Need advice on Wheel fitment

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Old 07-27-2018, 06:25 PM
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JQ911
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Default 19x9 et40 and 11x19 et40 on a NB

This is a photo of the red Rotiforms wheels I bought recently in 9x19 et40 and 11x19 et40 mounted on a black C2S as shown below with a bit of stretched sizes. The wheels are currently being refinished to match my 997.2 C2 in meteor grey and polished step up lip as shown below mounted on a 997TT (not my car). I will report back hopefully by next week once I get it if it will perfectly fit with eibachs on my 997.2 C2 NB. Otherwise, I will do coil overs to flush it in like the seller's photo.

Mounting 9.5x19 with et40 and 12x19 et70 might be too aggressive with stretched tires but might be doable on coil over, spacers on rears, negative camber and good alignment. otherwise, they would poke out all around.

Here is the photo of the C2S with 9x19et40 and 11x19et40







Here is what finish I am doing
Old 07-27-2018, 07:45 PM
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Originally Posted by GT3_ISH
If you're going air, then i guess we would need to discuss tires. Are you a stretch tire and as flush wheel as you can get kind of guy? Or are you a 325 on a 12" wheel kind of guy?

Yours and Petza914's suggestions should keep you close to a happy medium with the car aired up or out IMO.
I like the stretched tire look but not something i personally go for, especially on this car. I plan on going 235 on the 8.5 and 305 on the 11. If i can make a 12" wheel on 325 tire work, i would absolutely do it.

if you go to my instagram and see my Audi's stance, that is basically how i want the 911. Wheels sit flush to fenders at ride height (maybe 5mm poke) and tuck when aired out due to the slight natural camber (only when aired out).
Old 07-28-2018, 09:43 AM
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+70 on a 12" wheel would need a fairly large spacer to look good on the back. My old 19x12 wheels had +68 offset and could have easily used a healthy spacer to look flush.

My new wheels are 19x11.5 +37; however, the car has a little extra camber in the back and I ran 295/30/19 tires on them to make it work.

Here is a picture showing how they fit. Probably not for everyone but I like how it looks.

Old 07-28-2018, 10:14 AM
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Originally Posted by Steve 911
+70 on a 12" wheel would need a fairly large spacer to look good on the back. My old 19x12 wheels had +68 offset and could have easily used a healthy spacer to look flush.

My new wheels are 19x11.5 +37; however, the car has a little extra camber in the back and I ran 295/30/19 tires on them to make it work.

Here is a picture showing how they fit. Probably not for everyone but I like how it looks.

love it! More photos please!
Old 08-01-2018, 05:56 PM
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Default suspension set up

Originally Posted by Steve 911
+70 on a 12" wheel would need a fairly large spacer to look good on the back. My old 19x12 wheels had +68 offset and could have easily used a healthy spacer to look flush.

My new wheels are 19x11.5 +37; however, the car has a little extra camber in the back and I ran 295/30/19 tires on them to make it work.

Here is a picture showing how they fit. Probably not for everyone but I like how it looks.

Are you on coilovers? I am on the fence if I will do COs versus my current set up on eibachs. My wheels are arriving this week 9x19 et40 and 11x19 et40 and not sure how it will play on lowering springs with aggressive offsets.
Old 08-08-2018, 11:31 AM
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Originally Posted by HeatSeeker
love it! More photos please!
Thanks! I need to get some more photos of the car soon. I have been too busy to get any decent shots of it.

Originally Posted by JQ911
Are you on coilovers? I am on the fence if I will do COs versus my current set up on eibachs. My wheels are arriving this week 9x19 et40 and 11x19 et40 and not sure how it will play on lowering springs with aggressive offsets.
Yes, I'm on coilovers but if you already have the springs installed, it's worth giving it a try as-is. Hopefully it works out for you!
Old 08-08-2018, 12:40 PM
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Default Rotiform IND-T 3pc 9x19 et40 and 11x19 et40 on eibach

Here is how a +40 offset looks on eibachs on a narrow body. I just ordered coilovers as the eibachs aren't low enough to achieve the look i want. They are not popular style wheels for the 997 (multi-spoke) but i wanted wheels with wide lip 1.5" front and 2.5" rears for a deep dish look. Compared to my oe 18s they are lighter. Once I put coilovers and drop it, I will check if there is room for wider tires upfront and switch to 245/35 as I get a bit of stretch on 235

Rotiform IND-T 9x19 et40 on 235/35 and 11x19 et40 295/30





Last edited by JQ911; 08-08-2018 at 01:17 PM.
Old 08-08-2018, 03:52 PM
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Originally Posted by JQ911
Here is how a +40 offset looks on eibachs on a narrow body. I just ordered coilovers as the eibachs aren't low enough to achieve the look i want. They are not popular style wheels for the 997 (multi-spoke) but i wanted wheels with wide lip 1.5" front and 2.5" rears for a deep dish look. Compared to my oe 18s they are lighter. Once I put coilovers and drop it, I will check if there is room for wider tires upfront and switch to 245/35 as I get a bit of stretch on 235

Rotiform IND-T 9x19 et40 on 235/35 and 11x19 et40 295/30




I really love this! This is the almost the exact fitment that I want. Originally I was thinking 19x11 +52 but seeing this +40 makes me think I would end up wanting spacers (which I don't want to do). Now I thinking 19x11 +45.

For now I had my stock wheels powder coated in prismatic powders "Vegas Lights" and it really transformed the car. You can see photos in my build thread:

https://rennlist.com/forums/997-foru...c2s-build.html


Old 08-08-2018, 04:33 PM
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Originally Posted by HeatSeeker
I really love this! This is the almost the exact fitment that I want. Originally I was thinking 19x11 +52 but seeing this +40 makes me think I would end up wanting spacers (which I don't want to do). Now I thinking 19x11 +45.

For now I had my stock wheels powder coated in prismatic powders "Vegas Lights" and it really transformed the car. You can see photos in my build thread:

https://rennlist.com/forums/997-foru...c2s-build.html

+45 on 11x19 rears will be fine on your C2S Guards Red. I am waiting for my coil overs and dropping them would flush the +40 on my rears a bit.
Old 08-08-2018, 05:51 PM
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My 15mm spaces arrive today. Adding them will achieve and effective offset of +48 on a 19x11. I will post results here as I think that will be the sweet spot and I wanted to step up to a 305 in the rear. +45 should be fine on an 11. I went a little more conservative.
Old 08-08-2018, 07:21 PM
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Originally Posted by JQ911
Here is how a +40 offset looks on eibachs on a narrow body. I just ordered coilovers as the eibachs aren't low enough to achieve the look i want. They are not popular style wheels for the 997 (multi-spoke) but i wanted wheels with wide lip 1.5" front and 2.5" rears for a deep dish look. Compared to my oe 18s they are lighter. Once I put coilovers and drop it, I will check if there is room for wider tires upfront and switch to 245/35 as I get a bit of stretch on 235

Rotiform IND-T 9x19 et40 on 235/35 and 11x19 et40 295/30



Looks great, nice job!
Old 08-30-2018, 02:49 PM
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Originally Posted by chuuey
My 15mm spaces arrive today. Adding them will achieve and effective offset of +48 on a 19x11. I will post results here as I think that will be the sweet spot and I wanted to step up to a 305 in the rear. +45 should be fine on an 11. I went a little more conservative.
ever get the spacers installed?
Old 08-30-2018, 07:26 PM
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So i was offered a full sponsorship from a company on a set of wheels and the specs will be 20x9F et40 and 20x11R et40. Aggressive fitment but I think I can make it work and the two 911's up above were rocking these specs and look amazing!

I now need help selecting the tires. I am thinking 235/35/20 Front and 285/30/20 Rear. Is this even the right sidewall? What do you guys recommend? If fitment was not an issue I would throw 255 in the front and 315 in the rear but i know that is not possible, especially since I will be on air and want to slam the car out at competitions.

I plan on eventually getting me another set of wheels specifically for track/drag days.
Old 08-30-2018, 07:48 PM
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Originally Posted by HeatSeeker
So i was offered a full sponsorship from a company on a set of wheels and the specs will be 20x9F et40 and 20x11R et40. Aggressive fitment but I think I can make it work and the two 911's up above were rocking these specs and look amazing!

I now need help selecting the tires. I am thinking 235/35/20 Front and 285/30/20 Rear. Is this even the right sidewall? What do you guys recommend? If fitment was not an issue I would throw 255 in the front and 315 in the rear but i know that is not possible, especially since I will be on air and want to slam the car out at competitions.

I plan on eventually getting me another set of wheels specifically for track/drag days.
Doubt it. You're using width and aspect ratios that are the same as a stock 19" wheel and you need to keep the rolling circumference about the same as stock for the PSM, ABS, & TPMS systems to work correctly, which means your aspect ratios are going to need to be lower.

Also, can they not get you a eider rear, like an 11.5" or 12" so you can properly run a 305 or 315 width.

What I would recommend is that you go to www.willtheyfit.com and enter 235/35-19 for the front and 305/30-19 as your current setup one at a time, then enter 20" in the new setup box and play around with widths and aspect ratios until you find a combination that's within about 0.5%-1% of the stock rolling circumference. If its slightly larger, that's OK as Porsche speedometers read 2 MPH high all the time.

Last edited by Petza914; 08-30-2018 at 08:58 PM.
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Old 08-30-2018, 08:27 PM
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Originally Posted by JQ911
Here is how a +40 offset looks on eibachs on a narrow body. I just ordered coilovers as the eibachs aren't low enough to achieve the look i want. They are not popular style wheels for the 997 (multi-spoke) but i wanted wheels with wide lip 1.5" front and 2.5" rears for a deep dish look. Compared to my oe 18s they are lighter. Once I put coilovers and drop it, I will check if there is room for wider tires upfront and switch to 245/35 as I get a bit of stretch on 235

Rotiform IND-T 9x19 et40 on 235/35 and 11x19 et40 295/30

That's an aggressive setup. Does it rub and if so, did you do any fender work?

I'm thinking of BBS E88's and selling my Work's. I don't want to go with an aggressive fitment (sub 50 offset) since I don't want to stretch the tires and want meaty tires.


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