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991.1 vs 991.2 wheel offsets

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Old 03-19-2020, 03:02 PM
  #31  
Tay101
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I recommend you check out this thread:
https://rennlist.com/forums/991/1165...rrow-body.html
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F1SML8R (03-19-2020)
Old 03-19-2020, 06:45 PM
  #32  
stout
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Originally Posted by Tay101
I recommend you check out this thread:
https://rennlist.com/forums/991/1165...rrow-body.html
Having gone through this the hard way back in 2018, I'm surprised that many wheel vendors still haven't corrected this for potential customers. You have to shop very carefully when it comes to 991.2 wheels.
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F1SML8R (03-19-2020)
Old 02-07-2021, 12:34 PM
  #33  
smgkc
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Originally Posted by stout
From that other thread:

991.1 Carrera-line narrow body offsets for 20-inch wheels:
Front - 8.5 x 20 ET51 - 245/35 ZR 20 (91Y)
Rear - 11 x 20 ET70 - 295/30 ZR 20 (101Y) XL

991.2 Carrera-line narrow-body offsets for 20-inch wheels:
Front - 8.5 x 20 ET 49 - 245/35 ZR 20
Rear - 11.5 x 20 ET 76 - 305/30 ZR 20 (note: offset "only" changed 6mm, but wheel is further out in fender, as if on a spacer, also)




991.1 Carrera-line wide-body offsets for 20-inch wheels:
Front - 8.5 x 20 ET 51 - 245/35 ZR 20
Rear - 11 x 20 ET 52 - 305/30 ZR 20

991.2 Carrera-line wide-body offsets for 20-inch wheels:
Front - 8.5 x 20 ET 49 - 245/35 ZR 20
Rear - 11.5 x 20 ET 56 - 305/30 ZR 20

^ Above is best of my knowledge, and I encourage others to check the info; PCNA's configurator lists a number of 991.2 S/4S/GTS offsets incorrectly, which doesn't help matters. Please also note that there is an "XXL" extra wide body for the 991, used for the 911 Turbo/S and GT3/GT2 RS—but those live in their own forums.
Would the wheels below work for a 991.2 C4 (widebody)? Looking for some rims for winter tires and maybe came across some that will work. I dont really understand the offset well enough to feel comfortable, so I thought I would ask for help! Thanks in advanced!

Fronts: 235/35ZR19, 8" width with 57mm offset.
Backs: 295/30/ZR19, 11" width with 67mm offset.

Old 06-27-2021, 09:03 AM
  #34  
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Originally Posted by smgkc
Would the wheels below work for a 991.2 C4 (widebody)? Looking for some rims for winter tires and maybe came across some that will work. I dont really understand the offset well enough to feel comfortable, so I thought I would ask for help! Thanks in advanced!

Fronts: 235/35ZR19, 8" width with 57mm offset.
Backs: 295/30/ZR19, 11" width with 67mm offset.

Remember, spacers REDUCE the offset and push the face of the wheel further toward the fender lip. So, you will likely need to run spacers for these wheels to work properly, as the offsets are too large for your wide body.

Go 7-10mm in the front and 10-12mm in the rear and the wheel lip should be just about flush with the fender lip.

For example, I’m running 5mm/3mm on stock Carrera S wheels on my narrow body 991.2. I probably should have gone with 7mm or even 10mm up front. The rear could have handled 5mm to 7mm, but I didn’t want to be that aggressive as I have SPASM.
Old 12-15-2022, 12:33 AM
  #35  
driven991.1
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Default Will 991.2 TTS rims work just fine on a 991.1 S

Originally Posted by cutlass476
Remember, spacers REDUCE the offset and push the face of the wheel further toward the fender lip. So, you will likely need to run spacers for these wheels to work properly, as the offsets are too large for your wide body.

Go 7-10mm in the front and 10-12mm in the rear and the wheel lip should be just about flush with the fender lip.

For example, I’m running 5mm/3mm on stock Carrera S wheels on my narrow body 991.2. I probably should have gone with 7mm or even 10mm up front. The rear could have handled 5mm to 7mm, but I didn’t want to be that aggressive as I have SPASM.
I purchased the following rims for my 991.1 S that were on a 991.2 TTS. In the past I have had 11 in the rear, I would like to know if these would bulge out on a 991.1 S. I plan on putting new Perelli 295/30/20 tires on the rear. Can I get a clear answer from the experts?
https://www.ebay.com/itm/18554957645...hoCaeUQAvD_BwEPorsche Part # 991.362.720.00 Front Wheels - 9JX20 ET:51

Porsche Part # 991.362.761.01 Rear Wheels – 11.5JX20 ET:5
Old 12-15-2022, 09:32 AM
  #36  
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Originally Posted by driven991.1
I purchased the following rims for my 991.1 S that were on a 991.2 TTS. In the past I have had 11 in the rear, I would like to know if these would bulge out on a 991.1 S. I plan on putting new Perelli 295/30/20 tires on the rear. Can I get a clear answer from the experts?
https://www.ebay.com/itm/18554957645...hoCaeUQAvD_BwEPorsche Part # 991.362.720.00 Front Wheels - 9JX20 ET:51

Porsche Part # 991.362.761.01 Rear Wheels – 11.5JX20 ET:5
Those would be either flush or slightly poke out on a .1 GTS, so they will surely budge out on a narrow body S
These wheels are from the XXL wide body TT/TTS which is wider than .1 GTS

Old 12-15-2022, 12:46 PM
  #37  
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Originally Posted by myrr
I would suggest looking at the RI-D then, which is what I’m doing now...assuming you’ve a narrow body 991.2.
Dud you purchase the R-ID for your 991.2? The rears are only 11 inches wide where as the factory wheels seem to be 11 1/2 inches wide.
Old 12-15-2022, 02:04 PM
  #38  
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Originally Posted by buddalun
Dud you purchase the R-ID for your 991.2? The rears are only 11 inches wide where as the factory wheels seem to be 11 1/2 inches wide.
We some options in stock ready to go For more info: sales@supremepower.com

BBS FI-R in stock
20 x 9 et48 5x130
20 x 11.5 et46 5x130
20 x 11.5 et62 5x130
20 x 9 et52 centerlock
20 x 9.5 et50 centerlock
20 x 11.5 et54 centerlock
20 x 12 et52 centerlock
21 x 12,5 et48 centerlock

BBS Motorsport/Manthey Racing Magnesium in stock
20 x 9.5 et50 centerlock
21 x 12.5 et48 centerlock
20 x 9.0 et52 centerlock
20 x 12 et44 centerlock

BBS Motorsport RE-MTSP in stock
20 x 9.0 et52 centerlock
20 x 12 et47 centerlock

Be happy to assist
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Old 12-16-2022, 01:39 AM
  #39  
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That's a bummer, I wish I researched a bit more before pulling the trigger. I had on Rear - 11.0 x 20 that were about flush or slightly smaller I thought these would work pretty good as well. Well I guess I will be putting them on the marketplace to re-sell $ 2000 any takers?
Old 11-30-2023, 03:29 PM
  #40  
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Hello all... bumping this old thread hoping someone can tell me if this size and offset (8.5Jx20 ET53 11.5Jx21 ET67) will fit on a 991.2 narrow body S?
I think the offset will bring the rear wheels out about 9mm but not sure how that will work with the wheel being 1" taller too.

I thought I'd add 5mm spacers in the front to help with the negative 4mm offset.

Thanks in advance for any responses.

***edit***
A little (lot) more digging and I was able to determine that they probably won't look right on the car.

Last edited by CTDan; 11-30-2023 at 04:31 PM.
Old 01-30-2024, 01:37 AM
  #41  
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Originally Posted by CTDan
Hello all... bumping this old thread hoping someone can tell me if this size and offset (8.5Jx20 ET53 11.5Jx21 ET67) will fit on a 991.2 narrow body S?
I think the offset will bring the rear wheels out about 9mm but not sure how that will work with the wheel being 1" taller too.

I thought I'd add 5mm spacers in the front to help with the negative 4mm offset.

Thanks in advance for any responses.

***edit***
A little (lot) more digging and I was able to determine that they probably won't look right on the car.
CTDan, what part is making you feel like they wont look right. The 21s in the rear of a 991.2? I was considering the same but havent seen anyone post 992s on a 991.2 yet. However part of my concern is also the added weight of the 21s in the rear and wondering if the slightly higher diameter will change the affect the handling too.



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