[Z06] drag radials or ET street???
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Depends on the set-up of the car as to which tire is more suitable.
What is your current set-up and do you have plan for mods.
Finally, assume you mean tires for the drag strip.
Ranger
What is your current set-up and do you have plan for mods.
Finally, assume you mean tires for the drag strip.
Ranger
Le Mans Master
Joined: Feb 2007
Posts: 6,674
Likes: 57
From: Mt Pleasant, TN
I was wondering the same.
My set-up is at the moment...
-Cam/ FAST/ headers/ CAI making 436/386
-Exedy twin disc clutch
-DTE brace
-fully built RPM diff with 4.10's
I also have a set of heads that will be going on soon.
My set-up is at the moment...
-Cam/ FAST/ headers/ CAI making 436/386
-Exedy twin disc clutch
-DTE brace
-fully built RPM diff with 4.10's
I also have a set of heads that will be going on soon.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Originally Posted by ;1562828575
I was wondering the same.
My set-up is at the moment...
-Cam/ FAST/ headers/ CAI making 436/386
-Exedy twin disc clutch
-DTE brace
-fully built RPM diff with 4.10's
I also have a set of heads that will be going on soon.
My set-up is at the moment...
-Cam/ FAST/ headers/ CAI making 436/386
-Exedy twin disc clutch
-DTE brace
-fully built RPM diff with 4.10's
I also have a set of heads that will be going on soon.
(1) Mickey Thompson ET Street Radials, which can be run with the stock radial front tires or
(2) MT ET Street bias-ply, which for safety sake require a bias-ply front tire.
If you are after the absolute lowest ETs you can get and are prepared for the expense of swapping both rear and front wheels and tires, then the bias-ply tires are for you.
If you want to save some $$ and just change the rear wheels and tires, then the radials are for you. It takes commitment and many passes at the drag strip to get the most from the best tire combos. So you want to be realistic about you goals and time available to leverage the larger investment.
Hoosier, M&H and Goodyear also make tires that will fit. But the traditional tire for the C5 platform in your configuration is made by Mickey Thompson.
Selecting the correct size requires some research.
Ranger
Last edited by Ranger; Nov 20, 2007 at 06:53 AM.
Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
Hi bullitt4110. You have the mod-power, after-market clutch, gearing, and hardening to leverage the traction potential of a serious tire for the drag strip. Good choices include
(1) Mickey Thompson ET Street Radials, which can be run with the stock radial front tires or
(2) MT ET Street bias-ply, which for safety sake require a bias-ply front tire.
If you are after the absolute lowest ETs you can get and are prepared for the expense of swapping both rear and front wheels and tires, then the bias-ply tires are for you.
If you want to save some $$ and just change the rear wheels and tires, then the radials are for you. It takes commitment and many passes at the drag strip to get the most from the best tire combos. So you want to be realistic about you goals and time available to leverage the larger investment.
Hoosier, M&H and Goodyear also make tires that will fit. But the traditional tire for the C5 platform in your configuration is made by Mickey Thompson.
Selecting the correct size requires some research.
Ranger
(1) Mickey Thompson ET Street Radials, which can be run with the stock radial front tires or
(2) MT ET Street bias-ply, which for safety sake require a bias-ply front tire.
If you are after the absolute lowest ETs you can get and are prepared for the expense of swapping both rear and front wheels and tires, then the bias-ply tires are for you.
If you want to save some $$ and just change the rear wheels and tires, then the radials are for you. It takes commitment and many passes at the drag strip to get the most from the best tire combos. So you want to be realistic about you goals and time available to leverage the larger investment.
Hoosier, M&H and Goodyear also make tires that will fit. But the traditional tire for the C5 platform in your configuration is made by Mickey Thompson.
Selecting the correct size requires some research.
Ranger
To thew OP: I've cut slightly better 60'(.05-.08) times with etstreets over et street radials same day.(both MT).This was with a manual c5Z06 and a CLUTCH. The et street tends to be easier on the car due to flex of tire and the ability to avoid wheelhop.
Last edited by robz; Nov 20, 2007 at 12:11 PM.
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
With a 6 speed car you want bias plys.
For an auto you want radials.
Radials are faster than bias plys (and more stable on the top end) on 9+ second cars.
I run radial slicks (not DRs) on my drag car and picked up .03-.04 60'. Remember, when the tire wrinkles, you are not moving the car forward. My race car is a powerglide on a trans brake, though.
if you can run a radial, you should. however, a stick vette can't be launched with wheaties on them (cars like ours at least).
BTW, I run ET Street bias plys on my Z06 with stock front tires. I ran 18psi which spun a little off the line but that's what I wanted. No parts breakage and a bit more stable. In fact, I had absolutely no stability issues on the top end possibly due to my stiffly damped Pfadts....
I ran the same tires on a bone stock 01 Z28 in 2001 to a 12.6 but it was really wobbly past 1000 ft.
For an auto you want radials.
Radials are faster than bias plys (and more stable on the top end) on 9+ second cars.
I run radial slicks (not DRs) on my drag car and picked up .03-.04 60'. Remember, when the tire wrinkles, you are not moving the car forward. My race car is a powerglide on a trans brake, though.
if you can run a radial, you should. however, a stick vette can't be launched with wheaties on them (cars like ours at least).
BTW, I run ET Street bias plys on my Z06 with stock front tires. I ran 18psi which spun a little off the line but that's what I wanted. No parts breakage and a bit more stable. In fact, I had absolutely no stability issues on the top end possibly due to my stiffly damped Pfadts....
I ran the same tires on a bone stock 01 Z28 in 2001 to a 12.6 but it was really wobbly past 1000 ft.
Last edited by Higgs Boson; Nov 20, 2007 at 12:04 PM.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
C5Zs with stock clutches and less that 400 rwhp will see no improvement by switching to MT ET Street bias-ply tires compared to the MT Street Radials.
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
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Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
C5Zs with stock clutches and less that 400 rwhp will see no improvement by switching to MT ET Street bias-ply tires compared to the MT Street Radials.
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
With a 6 speed car you want bias plys.
For an auto you want radials.
Radials are faster than bias plys (and more stable on the top end) on 9+ second cars.
I run radial slicks (not DRs) on my drag car and picked up .03-.04 60'. Remember, when the tire wrinkles, you are not moving the car forward. My race car is a powerglide on a trans brake, though.
if you can run a radial, you should. however, a stick vette can't be launched with wheaties on them (cars like ours at least).
BTW, I run ET Street bias plys on my Z06 with stock front tires. I ran 18psi which spun a little off the line but that's what I wanted. No parts breakage and a bit more stable. In fact, I had absolutely no stability issues on the top end possibly due to my stiffly damped Pfadts....
I ran the same tires on a bone stock 01 Z28 in 2001 to a 12.6 but it was really wobbly past 1000 ft.
For an auto you want radials.
Radials are faster than bias plys (and more stable on the top end) on 9+ second cars.
I run radial slicks (not DRs) on my drag car and picked up .03-.04 60'. Remember, when the tire wrinkles, you are not moving the car forward. My race car is a powerglide on a trans brake, though.
if you can run a radial, you should. however, a stick vette can't be launched with wheaties on them (cars like ours at least).
BTW, I run ET Street bias plys on my Z06 with stock front tires. I ran 18psi which spun a little off the line but that's what I wanted. No parts breakage and a bit more stable. In fact, I had absolutely no stability issues on the top end possibly due to my stiffly damped Pfadts....
I ran the same tires on a bone stock 01 Z28 in 2001 to a 12.6 but it was really wobbly past 1000 ft.
C5Zs with stock clutches and less that 400 rwhp will see no improvement by switching to MT ET Street bias-ply tires compared to the MT Street Radials.
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
That was proven over and over in 2004-2006 as owners made the switch to bias ply and did no better in the 60', 330' or 1320'.
The reason for this is the limitation of the stock clutch, which can accommodate only a set amount of launch force (rpm and coefficient on traction by the track/tires) without slipping.
The lower limit of the stock LS6 clutch under the parameters on para 1 is 1.60. Many cars with ET Radials achieved that. No car with ET Street bias-ply beat that.
That recommendation changes if the power level increases and an aftermarket clutch is swapped in.
Ranger
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
At 363 rwhp and with the stock LS6 clutch, I ran the MT Radials (275.40.17) at 20-22 psi hot, measured in the lanes before each pass. The precise psi depended on conditions. I generally started the day at a launch rpm of 4600 and worked up to a max of 5200 depending on conditions.
My PR was at a launch rpm of 4600.
Many owners used a very high launch rpm with this tire, 6000-6600. I refrained from that out of a desire to increase the longevity of my clutches.
But the super elevated launch rpm produced no better 60', 330', or 1320' than 4600-5200 did.
I generally subscribe to the philosophy of minimal force required to achieve the desired result.
Ranger
Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
