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18" or 19" rims on GT4

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Old 10-05-2015, 09:39 AM
  #31  
GAZZ
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Originally Posted by Petevb
What's the barrel ID on the TCIII's?

I know Forgeline 19s (barely) fit over the 410 mm PCCBs. Calipers are effectively the same as the 380 mm cast iron. The math suggests the right barrel 18s should have .1" more clearance. If we know the barrel ID of the TCIIIs we should be able to compare and confirm.
Sorry, I can measure it anymore.
Suffice to say the barrel was jamming over the caliper but the rim was almost seated so it was pretty close.
Old 11-09-2015, 03:40 PM
  #32  
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Has anyone made any progress on 19" (on PCCB cars)?

Seems like there are reports of HRE having one that clears the GT3 PCCB (same brakes, but CenterLocks). Also Forgeline's GA1R?

Any others? I sent HRE a message, and have not spoken with Forgeline yet. An OZ, Volk or Advan option would be cool.
Old 11-09-2015, 04:11 PM
  #33  
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Everybody needs to look at these pics I've just been made privy to. The claim was that these were Forgeline 19" wheels fitted to a 981 previously.



Old 11-09-2015, 04:13 PM
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^There doesn't seem to be any space!?!
Old 11-09-2015, 04:30 PM
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Saw HRE 19" on a GT3 with Iron rotors yesterday. They cleared fine.
Old 11-10-2015, 05:45 PM
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Damon has some choices at the tire rack
Old 11-10-2015, 07:22 PM
  #37  
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Interesting picture, I have plenty of space with my 19 BBS wheels between the wheel and caliper.
Old 11-11-2015, 01:50 AM
  #38  
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Originally Posted by usctrojanGT3
Interesting picture, I have plenty of space with my 19 BBS wheels between the wheel and caliper.
well, maybe b/c "someone" knows how to add offset properly

1. dont believe in offsets. they are numbers, it has nothing to do if it fits or not. offsets are measure at hub ignoring profile shape. get me any offset for any car, i can make a wheel with that offset and NOT fit.

2. clearance. now there's clearance and there's clearance. on my cup car, factory wheels are 3mm to caliper or so. it CLEARS. and it ALSO SCRAPES..... so when ppl tell you it CLEARS..... dont believe them. you have to SEE WITH YOUR OWN EYES. i am -9.00 near sighted, so when i say clear. well...
Old 11-11-2015, 08:46 AM
  #39  
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Originally Posted by jpgunn
Saw HRE 19" on a GT3 with Iron rotors yesterday. They cleared fine.
Apples and oranges. HRE is known for keeping their offset data in house. In additional barrel size and profile designs come into play.

Originally Posted by Gofishracing
Damon has some choices at the tire rack
Agreed. But some are looking for other looks that tirerack doesn't fulfill.

Originally Posted by usctrojanGT3
Interesting picture, I have plenty of space with my 19 BBS wheels between the wheel and caliper.
Different manufacturer, different setup/design.

Originally Posted by mooty
well, maybe b/c "someone" knows how to add offset properly

1. dont believe in offsets. they are numbers, it has nothing to do if it fits or not. offsets are measure at hub ignoring profile shape. get me any offset for any car, i can make a wheel with that offset and NOT fit.

2. clearance. now there's clearance and there's clearance. on my cup car, factory wheels are 3mm to caliper or so. it CLEARS. and it ALSO SCRAPES..... so when ppl tell you it CLEARS..... dont believe them. you have to SEE WITH YOUR OWN EYES. i am -9.00 near sighted, so when i say clear. well...
+1

Clearance does not imply acceptable fitment
Old 11-11-2015, 10:56 PM
  #40  
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I know this may not be up to par for the forged, custom wheel crowd, but was looking at tire rack and saw these. I saw a GT4 at Daytona recently with similar looking OZs and hoosiers. Looking at these instead of the OZs because they offer it 19x11 for the rear and 19x8.5 up front. Wheels weights are similar. Would 255/40/19 and 295/30/19 tires work for this?
Old 11-11-2015, 11:17 PM
  #41  
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Originally Posted by ChrisFL
Would 255/40/19 and 295/30/19 tires work for this?
Is there a specific reason why you would want a front tire that is taller than the rear one?
Old 11-11-2015, 11:36 PM
  #42  
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Originally Posted by ExMB
Is there a specific reason why you would want a front tire that is taller than the rear one?
nope... didnt fix the sidewall height. wanted to plus size the tires... 255/35/19 would be similar height to OEM?
Old 11-12-2015, 01:13 AM
  #43  
GAZZ
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Looks like I have no choice but to go to 19".


Question is what is the stickiest tyre in 19"?
Must be road legal.
If it only lasts for 150 miles that's ok.
Price no object.


Im really struggling to find any 19" that can compare to A050s.
Old 11-12-2015, 02:46 AM
  #44  
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MPSC2 non N spec has correct size and is very sticky
better than trofeo R
Old 11-12-2015, 07:17 AM
  #45  
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Originally Posted by mooty
MPSC2 non N spec has correct size and is very sticky
better than trofeo R
What? People on Mclaren Life says the exact opposite!

http://www.mclarenlife.com/forums/mc...-vs-mpsc2.html


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