What e.t. difference with Drag wheels compared to stock?
04-06-2007, 09:44 AM
#1
What e.t. difference with Drag wheels compared to stock? Has anyone made a comparison between stock 17" wheels with 275 DR's and a set of 15" drag wheels with 275 DR's (3.5" front and 8" rear wide)?
I am trying to find concrete numbers as to what kinda e.t. gains there are by switching, since I know its about a 70-80 pound weight drop, but what does that translate into at the track?
I would like to negate the traction difference, but realize that would be hard, since the 15" DR's are gonna give better traction because of the larger sidewall. I am really wanting to know what kinda gains will be realized from the lighter wheel/tire combo.
Please, someone that has raced there car with each type, give me some numbers between the two.
Thank you, James.
I am trying to find concrete numbers as to what kinda e.t. gains there are by switching, since I know its about a 70-80 pound weight drop, but what does that translate into at the track?
I would like to negate the traction difference, but realize that would be hard, since the 15" DR's are gonna give better traction because of the larger sidewall. I am really wanting to know what kinda gains will be realized from the lighter wheel/tire combo.
Please, someone that has raced there car with each type, give me some numbers between the two.
Thank you, James.
04-06-2007, 01:04 PM
#3
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Originally Posted by Matt D
It's hard to get concrete numbers as track conditions, weather, etc, play a factor in it.
Matt speaks the truth and its the same with all mods.
One day a cam might run .8 faster, the next .7.
All depends on the track and weather conditions.
04-06-2007, 01:19 PM
#4
I just found out last weekend. Before I ran an MT slick on a 15 x 7 wheel, now I have 15x10's and 15x3.5's up front. I yoused to have to try to get a 1.7 60 in my M6 car, now every run is a 1.7 without even trying and I picked up a tenth in the 1/8th (havent had the chance to go 1/4 yet). Also I always mark the bead and the rim, now that I have the appropriate width wheel on the back I noticed the bead spun on the launch, that never happened with the old wheels. The worse part of the whole thing was devoting a solid weekend to caliper grinding.
04-06-2007, 01:47 PM
#5
Originally Posted by JUICED96Z
Matt speaks the truth and its the same with all mods.
One day a cam might run .8 faster, the next .7.
All depends on the track and weather conditions.
One day a cam might run .8 faster, the next .7.
All depends on the track and weather conditions.
I am basically looking for a statement like this;
"I had 17" wheels with drag radials and ran a XXX e.t. at the track, then I switched to 15" drag wheels with drag radials and ran XXX e.t."
If some can make such a comment, then this is what I am looking for, not really the reasons for it being hard to get the numbers
WS6HUMMER, do you have an comparison between your stock wheels and the drag wheels? This is what I'm really after.
04-06-2007, 02:03 PM
#6
Originally Posted by Dr. Jeckel
I know its about a 70-80 pound weight drop, but what does that translate into at the track?
Thank you, James.
Thank you, James.
Ive always been told that every 100 lbs is worth a tenth(.10)
The weight gone and the same 60" as before you should be faster....
04-06-2007, 02:05 PM
#7
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Originally Posted by NA$TY-TA
Ive always been told that every 100 lbs is worth a tenth(.10)
The weight gone and the same 60" as before you should be faster....
The weight gone and the same 60" as before you should be faster....
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04-06-2007, 02:08 PM
#8
Originally Posted by Dr. Jeckel
I realize it is hard to get numbers from gains, but if you have only one variable, which in this case would be the wheels, someone should have some kinda numbers. I'm just trying to figure out a rough estimate, like does it give you .1 or .4...I'm trying to figure out an average to just spending the money. The runs would need to be somewhat near each other (a few days), for weather variables to not really affect the outcome.
I am basically looking for a statement like this;
"I had 17" wheels with drag radials and ran a XXX e.t. at the track, then I switched to 15" drag wheels with drag radials and ran XXX e.t."
If some can make such a comment, then this is what I am looking for, not really the reasons for it being hard to get the numbers
WS6HUMMER, do you have an comparison between your stock wheels and the drag wheels? This is what I'm really after.
I am basically looking for a statement like this;
"I had 17" wheels with drag radials and ran a XXX e.t. at the track, then I switched to 15" drag wheels with drag radials and ran XXX e.t."
If some can make such a comment, then this is what I am looking for, not really the reasons for it being hard to get the numbers
WS6HUMMER, do you have an comparison between your stock wheels and the drag wheels? This is what I'm really after.
04-06-2007, 02:09 PM
#9
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Originally Posted by black_z
The gain is much higher when you are talking about unsprung weight....
usually you don't take off much weight on the rears - it's all in the skinnies. i'd say most people have experienced, around 1.5-.2 going from stock front wheels and tires to skinnies.
i gained a solid .2 in my orange car - went from 11.42 to 11.22. but those runs were made two weeks apart so weather could have been different.
04-06-2007, 02:12 PM
#10
Originally Posted by imslow
true dat!
usually you don't take off much weight on the rears - it's all in the skinnies. i'd say most people have experienced, around 1.5-.2 going from stock front wheels and tires to skinnies.
i gained a solid .2 in my orange car - went from 11.42 to 11.22. but those runs were made two weeks apart so weather could have been different.
usually you don't take off much weight on the rears - it's all in the skinnies. i'd say most people have experienced, around 1.5-.2 going from stock front wheels and tires to skinnies.
i gained a solid .2 in my orange car - went from 11.42 to 11.22. but those runs were made two weeks apart so weather could have been different.
04-06-2007, 04:00 PM
#11
Originally Posted by imslow
true dat!
usually you don't take off much weight on the rears - it's all in the skinnies. i'd say most people have experienced, around 1.5-.2 going from stock front wheels and tires to skinnies.
i gained a solid .2 in my orange car - went from 11.42 to 11.22. but those runs were made two weeks apart so weather could have been different.
usually you don't take off much weight on the rears - it's all in the skinnies. i'd say most people have experienced, around 1.5-.2 going from stock front wheels and tires to skinnies.
i gained a solid .2 in my orange car - went from 11.42 to 11.22. but those runs were made two weeks apart so weather could have been different.
04-06-2007, 04:35 PM
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I ran a 8.5x in the 1\8 with 245\50\16 street tires and i put on some Draglites with Micky Thompson Street ET Drag Radials 275/50/15 (on DR's with 15'' Wheels) and I ran a 8.141 that was a .4 diffrence in the 1\8 mile I was happy also got .3 in my 60' also but thats a given with DR's
The main thing I noticed 2nd Gear was just a little spin instead of a smoke show I reccomend a line lock for an M6 (me) because you gotta really heat them Dr's up in the water box
Starting off like I said i got 3 tenths in the 60'' almost a dead hook off the line I should have took the frount sway bar off stupid me !!! it just spun the very begining of 2nd and 3rd no spin at all on a good run on my street tires 3rd would chirp a little now its the same but in 2nd gear difference is night and day i got 4 tenths (.4 off my et in an 1\8 mile) pretty good mod Id say
The main thing I noticed 2nd Gear was just a little spin instead of a smoke show I reccomend a line lock for an M6 (me) because you gotta really heat them Dr's up in the water box
Starting off like I said i got 3 tenths in the 60'' almost a dead hook off the line I should have took the frount sway bar off stupid me !!! it just spun the very begining of 2nd and 3rd no spin at all on a good run on my street tires 3rd would chirp a little now its the same but in 2nd gear difference is night and day i got 4 tenths (.4 off my et in an 1\8 mile) pretty good mod Id say
Last edited by 98 Z-28; 04-06-2007 at 04:41 PM.
04-06-2007, 05:11 PM
#14
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When you take weight away from rotating mass like front wheels it has a much more effect than the equivalent of static mass (if that makes any sense). Thats why light wheels are a worthwhile mod (in my opinion).
04-06-2007, 07:02 PM
#15
Originally Posted by 1320FEVER
When you take weight away from rotating mass like front wheels it has a much more effect than the equivalent of static mass (if that makes any sense). Thats why light wheels are a worthwhile mod (in my opinion).
04-06-2007, 09:48 PM
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Originally Posted by Dr. Jeckel
I wouldn't burn BFG or MT DR's, I was always told that a light hazing would do great.....now e.t. streets and Nittos are a different story.
http://www.mickeythompsontires.com/tech.php?bulletin=s1
Pointed out by a buddy of mine
04-07-2007, 02:07 PM
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On the old SS, I picked up over .5 sec. Went from Stock ZR1's all around to 15" Telstars running skinnies and slicks.
Car ran 13.10's all day. 100% STOCK, not even a lid. Added nothing, took nothing away, other than the wheel and tire swap and it ran 12.5x's all day. Car was an 01' 6spd btw.
Car ran 13.10's all day. 100% STOCK, not even a lid. Added nothing, took nothing away, other than the wheel and tire swap and it ran 12.5x's all day. Car was an 01' 6spd btw.
04-07-2007, 02:56 PM
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Well I got C5 wheels in the back which are 18's and was wondering If I will gain anything if i put my 27x10.5/15 hoosier slicks with pro stars or is this too much tire for me?