ET Reduction Stock 20's to 17" Weld RTS (or equivalent) - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

2SSCAMARO · 03-24-2013, 01:37 PM

It is, but apparently recognition of sarcasm is not part of your higher education!

kwzito · 03-24-2013, 02:34 PM

oh yeah it was so sarcastic... whatever, dude, you busted .... man up

2SSCAMARO · 03-24-2013, 06:50 PM

There's nothing for me to man up to but I will do this. I will eat a huge portion of humble pie and make a public apology on this forum for ever doubting your mathematical genius talent IF........... You contact GM High Tech Performance and have them retract the portion of the published article relating to the 60' times and the correlation to the elapsed time. Based on you showing them the error of their ways, I would expect them to publish a corrected article based on mathematical facts supplied by yours truly. I will be looking for the new article.

Mr. Nasty · 03-24-2013, 07:39 PM

Mr. Nasty · 03-24-2013, 07:52 PM

Best time on stock wheel with nitto555DR was 11.17 with a 18x11 forghstar with 305/4518"DR M/T went a 10.87. But also swap to a 4L80E trans

kwzito · 03-24-2013, 08:27 PM

Quote:

Originally Posted by 2SSCAMARO

There's nothing for me to man up to but I will do this. I will eat a huge portion of humble pie and make a public apology on this forum for ever doubting your mathematical genius talent IF........... You contact GM High Tech Performance and have them retract the portion of the published article relating to the 60' times and the correlation to the elapsed time. Based on you showing them the error of their ways, I would expect them to publish a corrected article based on mathematical facts supplied by yours truly. I will be looking for the new article.

I can't help this person.

EvoWake · 04-04-2013, 09:04 AM

Quote:

Originally Posted by Mr. Nasty

Best time on stock wheel with nitto555DR was 11.17 with a 18x11 forghstar with 305/4518"DR M/T went a 10.87. But also swap to a 4L80E trans

I was thinking wow that's awesome... until i saw your last sentence.

And I understand that traction of a DR regardless of wheel offers the greatest improvement over stock in the 1/4, I was looking for input strictly on a setup of welds/bogarts vs. say stockers w/ drs, or c6's in back on drs.

Going to be picking up a set of c6 z06's for the time being but Can't hurt to think about future

Juice2SS · 04-04-2013, 11:30 AM

FYI, the P305/45R18 is a 29" tire. It isn't too much bigger but its not smaller either. Most that go to the 17" rim are using 28" tires. That alone is a small boost in performance.

Quick · 04-04-2013, 12:47 PM

The OD of a 305/45-18 is 28.81...I went from running 305/45-18's to 315/35-20's
and not an ounce of difference....same 60 ft...same 1/8 mile time...same 1/4 mile time.

Juice2SS · 04-04-2013, 01:19 PM

Hmmm... Discount Tire lists them as 29". Where did you get that 28.81"?

white ZL1 · 04-04-2013, 07:32 PM

305mm wide
45 aspect ratio
18" wheel

305/25.4 (mm/inch) = 12.0 inches wide
12.0 inches wide x .45 (for the aspect ratio) = 5.40" sidewall
5.40" sidewall x 2 (because there are is a sidewall on each side of the rim) = 10.80 inches
10.80 inches of sidewall + 18" wheel = 28.8" tire

Of course....that doesn't mean the tire isn't 29" tall when installed on the rim and aired up....but not on the car.
Mine end up being about 27.8" tall once you put the weight of the car on them.

Juice2SS · 04-04-2013, 07:34 PM

Gotcha! Now I know how to do tire math! lol

dekan513 · 04-04-2013, 07:53 PM

lol me too

03-24-2013, 01:37 PM	#15
2SSCAMARO Drives: 2010 Camaro Auto Join Date: Mar 2010 Location: Fl Posts: 1,164	It is, but apparently recognition of sarcasm is not part of your higher education! Last edited by 2SSCAMARO; 03-24-2013 at 02:15 PM. Reason: corrected word omission "of"

03-24-2013, 07:39 PM	#18
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	__________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

03-24-2013, 07:52 PM	#19
Mr. Nasty Emerald Coast Camaros Drives: 2010 RS/SS Rally Yellow & 68 SS Join Date: Dec 2012 Location: Woodville,FL. Posts: 1,814	Best time on stock wheel with nitto555DR was 11.17 with a 18x11 forghstar with 305/4518"DR M/T went a 10.87. But also swap to a 4L80E trans __________________ Best @ 586/525 =10.41 @ 133 AS OF 12/13/14>633 RWHP =10.22@135 AS OF 1/31/15 @ 633 RWHP=10.16@135 AS OF 1/29/16 @ 633 RWHP=10.10@136 TOPED 700 PASSES AFTER F.I. AND STILL ON THE ORIGIANAL STOCK AXLE & DIFF

04-04-2013, 12:47 PM	#23
Quick Drives: 2012 Camaro SS 45th Join Date: Oct 2011 Location: Union City,Tn. Posts: 858	The OD of a 305/45-18 is 28.81...I went from running 305/45-18's to 315/35-20's and not an ounce of difference....same 60 ft...same 1/8 mile time...same 1/4 mile time. __________________ OBX 1 7/8 LT's w/high flow cats. Doug Thorley catback w/x pipe. Cold air intake by CAI w/apex scoop.V-max ported throttle body.DynoSpeed tuned by Forest.369 rwhp/385 rwtq Something wicked this way cometh...

04-04-2013, 07:53 PM	#27
dekan513 chevy pride Drives: 2ss/rs Join Date: Feb 2012 Location: pikeville ky Posts: 2,141 View My Garage	lol me too __________________ check out ky speeds fb page https://www.facebook.com/kyspeed

03-24-2013, 02:34 PM	#16
kwzito Drives: the beast pictured above Join Date: May 2011 Location: Grosse Tete, LA Posts: 46	oh yeah it was so sarcastic... whatever, dude, you busted .... man up

03-24-2013, 06:50 PM	#17
2SSCAMARO Drives: 2010 Camaro Auto Join Date: Mar 2010 Location: Fl Posts: 1,164	There's nothing for me to man up to but I will do this. I will eat a huge portion of humble pie and make a public apology on this forum for ever doubting your mathematical genius talent IF........... You contact GM High Tech Performance and have them retract the portion of the published article relating to the 60' times and the correlation to the elapsed time. Based on you showing them the error of their ways, I would expect them to publish a corrected article based on mathematical facts supplied by yours truly. I will be looking for the new article.

04-04-2013, 11:30 AM	#22
Juice2SS Drives: 2011 2SS Join Date: Jan 2013 Location: DFW, TX Posts: 931	FYI, the P305/45R18 is a 29" tire. It isn't too much bigger but its not smaller either. Most that go to the 17" rim are using 28" tires. That alone is a small boost in performance.

04-04-2013, 01:19 PM	#24
Juice2SS Drives: 2011 2SS Join Date: Jan 2013 Location: DFW, TX Posts: 931	Hmmm... Discount Tire lists them as 29". Where did you get that 28.81"?

04-04-2013, 07:32 PM	#25
white ZL1 Drives: none Join Date: Aug 2011 Location: DFW area Posts: 1,844	305mm wide 45 aspect ratio 18" wheel 305/25.4 (mm/inch) = 12.0 inches wide 12.0 inches wide x .45 (for the aspect ratio) = 5.40" sidewall 5.40" sidewall x 2 (because there are is a sidewall on each side of the rim) = 10.80 inches 10.80 inches of sidewall + 18" wheel = 28.8" tire Of course....that doesn't mean the tire isn't 29" tall when installed on the rim and aired up....but not on the car. Mine end up being about 27.8" tall once you put the weight of the car on them.

04-04-2013, 07:34 PM	#26
Juice2SS Drives: 2011 2SS Join Date: Jan 2013 Location: DFW, TX Posts: 931	Gotcha! Now I know how to do tire math! lol