Debating on bigger DOT tire for no-prep race - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Super73 · 09-04-2015, 11:26 AM

I am sure some of you have seen the new ET Street R tire. They have a 32X17.50-15LT which ironically is basically the same as their ET Drag 32.0/14.0-15ST. Both are made of the M5 compound which has seemed to be the choice of guys running 10.5w.

Tire-------------------------------Measure Wheel – Section – Tread – Cir
ET Drag 32.0/14.0-15ST ----14 ------------------- 17.1 ------ 14.2 --- 100
ET ST R 32X17.50-15LT ---- 14 ------------------- 17.9 ------ 14.4 --- 101

I spoke to MT yesterday and they said unlike the old ET Street, the new ET Street R is 95% as stiff as a stiff side wall slick.

I am thinking about putting this on the truck to run a no prep race at the beginning of October. It retains DOT. Any thoughts?

BigDan3131 · 09-05-2015, 05:30 AM

Will your weight bias change how that tire works now that you put the sheetmetal back on? You were talking about doing that, did you?

hotrod 80 · 09-06-2015, 09:27 AM

I have heard good things about the ET street R . Let us know how they work .

Super73 · 09-06-2015, 02:49 PM

Dan, what sheet metal are you talking about? The tailgate? It is not on but I will likely take it with me.

BigDan3131 · 09-08-2015, 05:21 AM

I thought you were still driving hood-less and front bumper-less too.

Super73 · 09-08-2015, 11:24 AM

Quote:

Originally Posted by BigDan3131

I thought you were still driving hood-less and front bumper-less too.

Dan,

That is correct.

Super73 · 09-27-2015, 04:13 PM

Well I bit the bullet. But Summit screwed up and sent me a non matching pair. 99 1/2" roll out on one, 100 3/4" on the other. They shipped fro 2 separate warehouses. In route to me is a 100 1/2" and 100 3/4". I went ahead and mounted the 100 3/4" I got in the first delivery just to make sure it fit. Expecting the other two next week, then I can get it back on the ground.

When I order the 14" wheel, I will move it towards the outside 1".

27% more total width on the ground, not including the additional 6 3/4" roll out. I would say there is a fair amount of added contact patch.

djracer · 09-27-2015, 07:56 PM

That tire may work for me as well. I don't like the idea of a no prep race as a decent street would be safer in my opinion! I have had trucks that would dead hook on the street and spin like heck on a track.

Super73 · 10-05-2015, 01:07 PM

Few pics from this weekend..

djracer · 10-09-2015, 07:12 AM

How did it do?

Super73 · 10-10-2015, 02:55 PM

Tire worked good. At sacramento right now. 12-4 and 6-10. I will have more data tonight.

09-04-2015, 11:26 AM	#1
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Debating on bigger DOT tire for no-prep race I am sure some of you have seen the new ET Street R tire. They have a 32X17.50-15LT which ironically is basically the same as their ET Drag 32.0/14.0-15ST. Both are made of the M5 compound which has seemed to be the choice of guys running 10.5w. Tire-------------------------------Measure Wheel – Section – Tread – Cir ET Drag 32.0/14.0-15ST ----14 ------------------- 17.1 ------ 14.2 --- 100 ET ST R 32X17.50-15LT ---- 14 ------------------- 17.9 ------ 14.4 --- 101 I spoke to MT yesterday and they said unlike the old ET Street, the new ET Street R is 95% as stiff as a stiff side wall slick. I am thinking about putting this on the truck to run a no prep race at the beginning of October. It retains DOT. Any thoughts? __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-05-2015, 05:30 AM	#2
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: Debating on bigger DOT tire for no-prep race Will your weight bias change how that tire works now that you put the sheetmetal back on? You were talking about doing that, did you? __________________ Custom Painter/Restoration Specialist 1965 GMC 3/4 Ton LB SOLD? 1964 Chevy El Camino in full restoration 1991 Chevy S10 288K+ miles 2nd Owner SOLD 2020 RAM 1500 Warlock

09-06-2015, 09:27 AM	#3
hotrod 80 mini truck racer Join Date: Aug 2006 Location: Baytown , texas Posts: 3,010	Re: Debating on bigger DOT tire for no-prep race I have heard good things about the ET street R . Let us know how they work . __________________ 1949 5-window 1969 Camaro 1976 Chevy Luv yellow 1978 Chevy Luv Blue 1976 Chevy Luv Black 1979 Firebird Flooded in Harvey 1999 F350 Dually 2005 GMC Sierra 4.8 RCSB 2014 Explorer (wifes) My build :http://67-72chevytrucks.com/vboard/s...d.php?t=399148 Build #2: http://67-72chevytrucks.com/vboard/s...d.php?t=653583

09-06-2015, 02:49 PM	#4
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Debating on bigger DOT tire for no-prep race Dan, what sheet metal are you talking about? The tailgate? It is not on but I will likely take it with me. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-08-2015, 05:21 AM	#5
BigDan3131 Registered User Join Date: Jun 2006 Location: Maple Valley, WA Posts: 1,913	Re: Debating on bigger DOT tire for no-prep race I thought you were still driving hood-less and front bumper-less too. __________________ Custom Painter/Restoration Specialist 1965 GMC 3/4 Ton LB SOLD? 1964 Chevy El Camino in full restoration 1991 Chevy S10 288K+ miles 2nd Owner SOLD 2020 RAM 1500 Warlock

09-27-2015, 04:13 PM	#7
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Debating on bigger DOT tire for no-prep race Well I bit the bullet. But Summit screwed up and sent me a non matching pair. 99 1/2" roll out on one, 100 3/4" on the other. They shipped fro 2 separate warehouses. In route to me is a 100 1/2" and 100 3/4". I went ahead and mounted the 100 3/4" I got in the first delivery just to make sure it fit. Expecting the other two next week, then I can get it back on the ground. When I order the 14" wheel, I will move it towards the outside 1". 27% more total width on the ground, not including the additional 6 3/4" roll out. I would say there is a fair amount of added contact patch. Attached Images __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

09-27-2015, 07:56 PM	#8
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	Re: Debating on bigger DOT tire for no-prep race That tire may work for me as well. I don't like the idea of a no prep race as a decent street would be safer in my opinion! I have had trucks that would dead hook on the street and spin like heck on a track. __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-05-2015, 01:07 PM	#9
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Debating on bigger DOT tire for no-prep race Few pics from this weekend.. Attached Images __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49

10-09-2015, 07:12 AM	#10
djracer Registered User Join Date: Feb 2001 Location: Wetumpka, Al, U.S. Posts: 8,891	Re: Debating on bigger DOT tire for no-prep race How did it do? __________________ Kevin Special Thanks to All who have helped on the TRUCK! My Pass Time Show http://s129.photobucket.com/albums/p...Chapter1-0.mp4 So Far my best Times are: Motor only: 6.44 1/8 @ 104.13 10.39 1/4 @ 125.83 Nitrous Times: 5.785 1/8 @ 118.65 with a 1.336 60ft 9.168 1/4 @ 142.58 with a 250 shot dead out of the hole!

10-10-2015, 02:55 PM	#11
Super73 Registered User Join Date: Nov 2007 Location: Bay Area, Ca Posts: 2,841	Re: Debating on bigger DOT tire for no-prep race Tire worked good. At sacramento right now. 12-4 and 6-10. I will have more data tonight. __________________ ------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49



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