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2004 911 Turbo looking to put 19 inch tires on ?

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Old 08-09-2017, 01:57 AM
  #46  
WindS
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Got 315/30R-18 FALKEN AZENIS RT615K+ in the back
and 235/40R-18 in the back.

See how it goes.
Old 08-09-2017, 03:03 AM
  #47  
s65e90
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Originally Posted by WindS
Got 315/30R-18 FALKEN AZENIS RT615K+ in the back
and 235/40R-18 in the back.

See how it goes.
Great tires. I have the same. Same sizes also.
Old 08-09-2017, 10:02 AM
  #48  
Carlo_Carrera
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Try 245/40-18s in the front. You may like it even more.
Old 04-02-2020, 06:09 PM
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ENV
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Originally Posted by Flewis763
Sizes of the tires are way off. A 295/35/19 rear is much to tall to fit. The front 235/40/19 rear is to tall as wall.
best overall setup for 19s with awd is a 245/35/19 front and a 295/30/19 or 305/30/19 rear.

Is this still true? Can this be ran without breaking the front diff?
Old 04-02-2020, 06:12 PM
  #50  
Flewis763
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Originally Posted by ENV
Is this still true? Can this be ran without breaking the front diff?
yes. 245/35/19 and 305/30/19 setup guys have been running for 10 year. Diff is fine. If worries, 295/30/19 would make the ratio even closer.
Old 04-02-2020, 06:21 PM
  #51  
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Originally Posted by Flewis763
if you're supper worried about the awd you can run a 245/35/19 and 295/30/19 which are closer than being the 305 rear. Guy have been running the 245/305 setups for years though with no issues.

honestly the awd system in our cars kinda sucks anyway and is basically rwd with a little front wheel assist. The notable difference in awd performance is slime to none.
The 245 front wont rub? I would want Michelin ps4s but I know they run wider than other tires. Would I have an issue running the sizes mentioned above?

Im lowered on coilovers as well.
Old 04-02-2020, 06:23 PM
  #52  
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Originally Posted by ENV
The 245 front wont rub? I would want Michelin ps4s but I know they run wider than other tires. Would I have an issue running the sizes mentioned above?
depends on your wheel offset. I typically setup car with pretty aggresive offsets and both roll fenders and do the radiator bracket mod.
Old 04-02-2020, 06:28 PM
  #53  
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Originally Posted by Flewis763
depends on your wheel offset. I typically setup car with pretty aggresive offsets and both roll fenders and do the radiator bracket mod.
these are my specs. Im trying to find offset. I would prefer not to roll fenders etc.
Item: ADV7 Deep Concave Wheel and Tire Package Application: Porsche 993 / 996 Turbo Wheels Size : 19" Wheel Finish : Brushed Titanium w/ Gloss Gunmetal Lips Bolt pattern : 5x130 Widths: 8.5" Front, 11" Rear Tire Brand: Michelin Pilot Sport PS2 Front Tire Size: 235/35/19 Rear Tire Size: 315/25/19
Old 04-02-2020, 08:02 PM
  #54  
Capt. Obvious
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If you want the sidewall angle (the "stretch") to match from front to rear, go with 235/35s and 295/30s OR 245/35s and 305/30s with your wheels.

The wheels on my car are 19x8.5/11 as well with 235s and 295s. The tires are General GMax RS, which run a bit narrow compared to other tires so they have a bit of the stretched look to them (though they technically aren't stretched at all).

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Old 04-04-2020, 12:05 PM
  #55  
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Originally Posted by Capt. Obvious
If you want the sidewall angle (the "stretch") to match from front to rear, go with 235/35s and 295/30s OR 245/35s and 305/30s with your wheels.

The wheels on my car are 19x8.5/11 as well with 235s and 295s. The tires are General GMax RS, which run a bit narrow compared to other tires so they have a bit of the stretched look to them (though they technically aren't stretched at all).

disregard my post to you in other thread I didnt see this.

I know michelin run a little wider than other tires. I want to be sure I can throw the 305 245 option of michelin ps4s on without any rubbing. I cant find a right calculator or michelin spec but do you think the Michelins would work? Or do I need to confirm offset before purchasing?
Old 04-04-2024, 09:00 AM
  #56  
HaritzUnamuno
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Originally Posted by r6vr6
I run 19" and love the look and the fitment is great. Details:

19x9 +50
19x11.5 +38
245/35 - 19
305/30 -19
Bridgestone s04
Bilstein PSS9 at gt2 height

I do not track my car and definitely don't have the skill to go 10-10ths so the performance edge if any is a moot point for me for 18". I might get a rub on the front fender liner if making a 90 turn at speed and hitting a bump. The car came with stock twist with Hankook V12 evo2. The 19" ride much better (nearly same sidewall height as 18" and the rest I attribute to the tire difference). The 19" tires are much grippier but they are wider and a different brand so it isn't and apples to apples comparison. Oh BTW my speedo was 6 mph fast (at normal crusing speed) and now is only about 3MPH fast with the taller tires so it actually helped my speedo be more accurate. Generally I find that the speedos in cars read 3mph fast so a taller tire is going to make it more accurate unless you go "way taller".

Old images after 1st mounting them:

Attachment 1190954
Attachment 1190955
Attachment 1190956
Hey! I need your help with my fitment on my 2004 C4s. I really like yours, did you use spacers on your wheels?
thank you I’m advance!
Old 04-04-2024, 04:35 PM
  #57  
Duc Hunter
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Originally Posted by WindS
I just purchases a 996TT with ****'d tires. 12 years old in the front (6/32) and 10 years old in the back (nearly bald). I've got a set of 19" rims and 18" rims. In the 225/35-19+315/25-19 sizes, the choices suck. I'm really after the pilot Super Sports. I see I can get a set of PSS with 235/35-19 + 305/30-19, or 245/30-19 + 305/30-19 sizing. Advice question, this car is lowered with H&R springs by 1". The front diameter will go up 0.3 and 0.6" respectively with these tires. Is this a big deal? Is this enough to scrape the wheel well?

For 18", is there a better tire size combo than 225/40R18 + 295/30R18 with more choices (like PSS)?
On my 18’s I typically run GT2 sizes, 235/40-18 and 315/30/18. Right now thoguh the new PS4S is available in the stock turbo sizes. That tire is SO MUCH more advanced than the PS2’s available in the GT2 size I would rather run the stock tire size that are the new tire design.

I’m lowered on H&R coilovers. When I tried 235/40-19 and 305/30-19’s they rubbed. Bridgestone RE050A. They barely ever rubbed at stock ride height. Lowered though, they are unusable. My understanding was anything over the 25.5” rear of the GT2’s 315/30-18 was asking for trouble. That 305/30-19 is a whopping 26.3” diameter. The rule use to be run the 315/25-19 that’s 25.2” diameter. Those are impossible to find and prob are very harsh on the street. The stock turbo diameters are 25.1” front and 25” rear. The stock GT2 sizes are 25.4” front and 25.5” rear. Just my 2 cents, I woud stay under 26” for max tire diameter (esp if lowered) and make the rears SLIGHTLY shorter than the front.

The specific setup I tried to run 235/40-19 (26.4”) on 19x8.5 ET51 wheels, and the rear was 305/30-19 (26.3” Dia) on a 19x11 ET35 wheel. The wheels are forged Fuchs. I need new tires now and am pondering going back to 19’s after reading this discussion. I use to got to Tire Racks site to pull up a given tire (Mich PS4S), and scan the sizes for the diameters I wanted, then see if there was a set that worked width wise, etc. Seems they’ve changed their site and that list is gone. Shame!

Last edited by Duc Hunter; 04-04-2024 at 09:20 PM.
Old 04-04-2024, 09:13 PM
  #58  
2fcknfst
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Originally Posted by HaritzUnamuno
Hey! I need your help with my fitment on my 2004 C4s. I really like yours, did you use spacers on your wheels?
thank you I’m advance!
You may want to ask the Carrera guys...
Old 04-04-2024, 09:21 PM
  #59  
Duc Hunter
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Originally Posted by 2fcknfst
You may want to ask the Carrera guys...
C4S has the same size tires as the turbo’s, and teh same AWD system. So dont ask them, stay here.
Old 04-04-2024, 09:23 PM
  #60  
2fcknfst
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Well, this is the turbo forum... Not the Carrera forum...

Not to mention the necro thread.



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