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-   -   Radial Tire question... (https://classracer.com/classforum/showthread.php?t=47746)

brent flynn 06-09-2013 10:32 PM

Radial Tire question...
 
Anybody out there using a the Pheonix 9x30 92'' Radial, or the M/T 29.5/9 Drag radial? I know alot of you are using the Hoosier's... Reason im asking, is , these tires are 92'', and i have tire clearance probs with a 94'' ... I know Randi Lyn Shipp is running the M/T, but dont know if its the 92'' or 93'' version. My outer wheel well lips are trimmed, and on 10'' rim, i have 94'' pheonix bias tires on it now, and nothing but problems, in the pits, not down track... Im thinkin about goin with the M/T 29.5 Radial... Any thoughts? THanks!

Myron Piatek 06-09-2013 11:05 PM

Re: Radial Tire question...
 
Radials don't grow like bias ply, so the same size radial may work well. Hoosier has 92.5" and 94" circumference radial slicks. Don't know about the other brands.

http://www.hoosiertire.com/specdrag.htm

Dave Ribeiro 06-09-2013 11:09 PM

Re: Radial Tire question...
 
Brent,

Hoosier has 92.5" & 94 " dia ... ( 92.5 is what most people run )....

1320racer 06-09-2013 11:17 PM

Re: Radial Tire question...
 
advised you over a year ago to stay with a bias slick unless your car works on a junk starting line and if going with a radial slick buy Hoosier.

I ran the 92.5" Hoosier radial for 9 years, going through 27 pair and have been as quick as 1.28 in 60 foot at 3880 lbs.

IF you elected to run radials, remember no rim screws and no tubes.

Tom Moock 06-10-2013 12:23 AM

Re: Radial Tire question...
 
Brent, I think you will have more sidewall clearance with Hoosier slicks over the M/T`s, on the same size wheel. Tom

Jim Kaekel 06-10-2013 09:16 AM

Re: Radial Tire question...
 
Quote:

Originally Posted by Myron Piatek (Post 385480)
Radials don't grow like bias ply, so the same size radial may work well. Hoosier has 92.5" and 94" circumference radial slicks. Don't know about the other brands.

http://www.hoosiertire.com/specdrag.htm

X2...Listen to Myron. Hoosier radials are awesome. I wouldn't go back to bias ply slicks if they gave them away. An easy tenth quicker and they drive better down the track to boot!

1320racer 06-10-2013 09:38 AM

Re: Radial Tire question...
 
I've made more passes on radial slicks than most running stock eliminator. A tenth is the number you usually hear on small block cars but you won't see that on big block cars.

Michael Beard 06-10-2013 11:18 AM

Re: Radial Tire question...
 
You can find the M/T tire guide info here: http://www.mickeythompsontires.com/s...m=ETDragRadial

They have two different 30x9 radials, one taller, one wider. I always ran the 3066R (shorter 93", but wider, true 9" tire). 110 passes like clockwork, prints tickets, and was .12-.13 faster than the bias plys. Won a Bracket Finals, World Footbrake Challenge, and a Stock World Championship on these tires.

Only ran the 29.5x9's through one set. Also a good tire, but the 3066R's just fit my gearing better, and liked the extra tread width insurance.

brent flynn 06-10-2013 12:45 PM

Re: Radial Tire question...
 
My car does consistent 1.48 60fts with an overcammed bracket
engine. My tires don't rub, down track, just around corners, forward or backward. I thought I'd give the 29.5 Mickey's a try, because they would give me a gear between. 4.56 and 4.88...and figured they would hook just fine,as long a track was good. I bought bias, last year, before my front suspension was redone, with global west stuff. I figured radials wouldn't work too well, with factory stuff. My car seems to work pretty good,,and I think it'll work even better, with more converter and gear.

Ed Wright 06-10-2013 12:46 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by Michael Beard (Post 385529)
You can find the M/T tire guide info here: http://www.mickeythompsontires.com/s...m=ETDragRadial

They have two different 30x9 radials, one taller, one wider. I always ran the 3066R (shorter 93", but wider, true 9" tire). 110 passes like clockwork, prints tickets, and was .12-.13 faster than the bias plys. Won a Bracket Finals, World Footbrake Challenge, and a Stock World Championship on these tires.

Only ran the 29.5x9's through one set. Also a good tire, but the 3066R's just fit my gearing better, and liked the extra tread width insurance.

I agree. One of the best moves I made was to MTs. Tried bias tires also for the local bracket track prep. Didn't hook as well as radials. I think the "bias better on junk tracks" story is out of date. Other SS cars around here found the same thing. They just use them to slow down.

Another was to Santuff shocks.

Jim Kaekel 06-10-2013 02:09 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385515)
I've made more passes on radial slicks than most running stock eliminator. A tenth is the number you usually hear on small block cars but you won't see that on big block cars.

I've got a big block Stocker and had two sets of slicks, one bias ply and the other radial. I picked up .10-.12 every time I backed-to-back them, and that was nearly 20 years ago.

1320racer 06-10-2013 03:04 PM

Re: Radial Tire question...
 
radials slicks back in '93, I don't think so! Maybe you were a tenth quicker with a slow "big block" olds back when it was running in the 12's but NOT with a real big block launching a nearly 2 ton ride...

http://classracer.com/classforum/pic...pictureid=5257

james schaechter 06-10-2013 03:48 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385576)
radials slicks back in '93, I don't think so! Maybe you were a tenth quicker with a slow "big block" olds back when it was running in the 12's but NOT with a real big block launching a nearly 2 ton ride...

http://classracer.com/classforum/pic...pictureid=5257

Don't be so quick to reply. You can race a long time and not know everything. Why you would doubt Jim Kaekel is a mystery to anyone that has seen him race for decades in division 3 with a stocker. I get it; your old bracket car was cool! I had a poster of it. It does not make Jim wrong.

Ed Wright 06-10-2013 03:51 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by james schaechter (Post 385582)
Don't be so quick to reply. You can race a long time and not know everything. Why you would doubt Jim Kaekel is a mystery to anyone that has seen him race for decades in division 3 with a stocker. I get it; your old bracket car was cool! I had a poster of it. It does not make Jim wrong.

And, he does wheel stands the rest of us can't do. He even has pictures of them! lamo!!

buzzinhalfdozen 06-10-2013 03:57 PM

Re: Radial Tire question...
 
Comparing your bracket car to an actual STOCKER is meaningless...... I've never used the "small tire" however big or small block on a big tire it's .08 to .12 in almost every case. This may or may not be due to the physical size of the tire I don't know. Oh and James he does indeed know everything just ask him.

Ed Wright 06-10-2013 04:04 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by buzzinhalfdozen (Post 385590)
Comparing your bracket car to an actual STOCKER is meaningless...... I've never used the "small tire" however big or small block on a big tire it's .08 to .12 in almost every case. This may or may not be due to the physical size of the tire I don't know. Oh and James he does indeed know everything just ask him.

I was told long ago by a guy at ATI, the bracket cars don't get the same converters we do. Those don't "hit" as hard due to the poorer track conditions they often encounter.
Ditto the "10.5" shoot out" cars. Apples & oranges.

With my little 3240 lb, 350" SS car, radials were usually almost two 10ths quicker before I had it back-halved. 10.5" tires back then. have not tried bigger bias tires yet. Can't spin these suckers.

1320racer 06-10-2013 04:12 PM

Re: Radial Tire question...
 
now the self proclaimed all knowing stock/super stock experts have now entered this thread spewing bad and inaccurate info!

Jim Kaekel 06-10-2013 04:17 PM

Re: Radial Tire question...
 
It was '96 to be exact that I first used radials. I remember the exact year because I got a set so that I could get into the US Nationals that year. It worked and with a little luck that weekend, I made it to the final round. They had been around at least a year or two at the time.

1320racer 06-10-2013 04:35 PM

Re: Radial Tire question...
 
and your olds ran what 60 foot/ET 17 years ago?

Back to the facts and the truth, I've done the back to back to back and never ran close to a tenth quicker with BBC power under the hood and made over 3000 passes on Hoosier Radial slicks to date and counting. Been 1.28 60 foot at 3880 lbs. on the small tire and 1.17 60 foot at 3144 lbs. on the big tire both launching off the footbrake and with ATI converters too!:p

Both legal class cars except the engines under the stock hoods!

Ed Wright 06-10-2013 04:46 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385599)
now the self proclaimed all knowing stock/super stock experts have now entered this thread spewing bad and inaccurate info!

I think the only all knowing self proclaimed expert would be you?

Might ask ATI if you have the same converter they would sell you for a Stock or Super Stock?
They do make a lot of bracket converters too.

Jim Kaekel 06-10-2013 04:48 PM

Re: Radial Tire question...
 
[QUOTE=1320racer;385604]and your olds ran what 60 foot/ET 17 years ago?

Probably about 1.5-1.6's. I was running 11.30-40's @ 115 MPH at the time. I didn't know you were a fan. I could send you an autographed photo if you like.

1320racer 06-10-2013 04:48 PM

Re: Radial Tire question...
 
I'm not impressed! I was running those times in the mid 90's at over 4000 lbs., with a Q-Jet and driving my car to and from the track every weekend!:p

Meanwhile, I only offer advice and reply about what I KNOW and I KNOW radial slicks, get over it!

442OLDS 06-10-2013 04:53 PM

Re: Radial Tire question...
 
I am not really sure what the arguing is about in this thread,but we race two Olds 442 Stockers and have been running radials for awhile now.They are worth about .07-.08 on our cars.No way a tenth.

We have tried them all at one time or another also.Right now,Hoosier really has their ***** together.I made four runs over the weekend,and 3 of 4 were the same 60 ft right to the thousandth.I was only running 1.531,which is a little slower than I would like,but I ran the car for the first time at 4,080 pounds.Over two tons of fun.

Jim Kaekel 06-10-2013 04:55 PM

Re: Radial Tire question...
 
And I was just getting ready to ask you for your address so I could send you my "hero card"....

1320racer 06-10-2013 04:58 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 442OLDS (Post 385616)
we race two Olds 442 Stockers and have been running radials for awhile now.They are worth about .07-.08 on our cars.No way a tenth.

Thank you for replying and stating your 1st hand results! They were worth less than that on my Chevelle.

Jim Kaekel 06-10-2013 05:00 PM

Re: Radial Tire question...
 
You're results may vary....different brands, circumferences, etc.

442OLDS 06-10-2013 05:05 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by Jim Kaekel (Post 385620)
You're results may vary....different brands, circumferences, etc.

You guys are arguing over .02-.03 hundredths?

Michael Beard 06-10-2013 05:05 PM

Re: Radial Tire question...
 
Quote:

I've done the back to back to back and never ran close to a tenth quicker with BBC power under the hood
Might've been running out of rpm with the radial vs the bias.

I've back-to-backed M/T's 30" radial vs 28" bias, and the radial was still notably quicker even in the 1/8th mile, despite the taller tire.

1320racer 06-10-2013 05:07 PM

Re: Radial Tire question...
 
Michael, you've seen my cars and know they work. No, not running out of RPM.

My statements are in fact true and accurate. Heavy big block cars will not see anywhere near a tenth swapping from bias to radial slicks.

BTW, Chad Harris nor Bob Tatum picked up a tenth either with their heavy big block cars and both were considerably lighter than my car.

MrWendy'sJr 06-10-2013 09:26 PM

Re: Radial Tire question...
 
Watch out for the wicked radial wobal. Switched over from the bias for class a couple years ago and almost had to get a new seat cover.:eek: Anti-roll bar in the offseason and no more problem. From what i undersand some cars get it and some don't care.

Ed Wright 06-10-2013 09:35 PM

Re: Radial Tire question...
 
What I found is they seem to like wider wheels than bias tires. Mine hooks harder, with more air, on wider wheels. Stopped all wobble. On 9" tires mine liked 10" wheels, the 10.5" radials liked 12" wheels. I now use 12.2 W (a little over 12.5") on 14" wheels. Have never had one wobble since I got off wheels the same or lees than tread area. Has worked that way on Hoosier, MT and Goodyear radials. Runs quicker with zero wobble.

Andrew Hill 06-10-2013 09:56 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385624)
My statements are in fact true and accurate.

Wow, another person who's not wrong about anything! I thought I was the only one!

brent flynn 06-10-2013 10:36 PM

Re: Radial Tire question...
 
I was mainly asking if anybody had tried the 29.5MT Radial...its 8 1/2' wide(according to the info on their site)... its only 92'' Circ, while one of the 9x30's is 93''. Im just trying to keep them out of my 1/4 panels... Im running a 94'' Pheonix bias, and have major rubbing issues, on the outer wheel lips...and theyve all been trimmed and rolled. Gettin tired of the rubbing, The problems arise, when im driving around, not at the top end. They grow, some, but dont seem to be into the body, at 120mph. Curious about the Pheonix 92'' Radial, and if anybody is using them......

james schaechter 06-11-2013 05:59 AM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385599)
now the self proclaimed all knowing stock/super stock experts have now entered this thread spewing bad and inaccurate info!

My point was that you can be right and others can be right. Most people (most) draw upon first hand experience and attempt to be helpful to others. They try and share their experiences with their cars.

I know that understanding stock and superstock along with our quirky rules can be difficult, but most of what racers know is derived from their on track experiences.

I would not figure that I could apply tuning aids from my stocker to a rat motor Chevelle, but it does not mean you didn't have yours set up right because of that.

1320racer 06-11-2013 07:59 AM

Re: Radial Tire question...
 
Quote:

Originally Posted by james schaechter (Post 385729)
I would not figure that I could apply tuning aids from my stocker to a rat motor Chevelle, but it does not mean you didn't have yours set up right because of that.

you would figure WRONG when talking about my cars that are stock and super stock legal class cars except the for engines under the hood!

Jim Kaekel 06-11-2013 08:49 AM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385740)
you would figure WRONG when talking about my cars that are stock and super stock legal class cars except the for engines under the hood!

Dude, turn you're TV on, you're missing the latest re-run of Pinks!

1320racer 06-11-2013 08:55 AM

Re: Radial Tire question...
 
dude when you've made half the passes I have, no mind on radial slicks, no mind your first 9 second pass, no mind your first 8 second pass, then you can attempt to tell us how you know as much no mind more!

Quote:

Originally Posted by brent flynn (Post 385714)
I was mainly asking if anybody had tried the 29.5MT Radial...its 8 1/2' wide(according to the info on their site)... its only 92'' Circ, while one of the 9x30's is 93''. Im just trying to keep them out of my 1/4 panels... Im running a 94'' Pheonix bias, and have major rubbing issues, on the outer wheel lips...and theyve all been trimmed and rolled. Gettin tired of the rubbing, The problems arise, when im driving around, not at the top end. They grow, some, but dont seem to be into the body, at 120mph. Curious about the Pheonix 92'' Radial, and if anybody is using them......

brent, it seems to me you know the answer to your issue which is a different matter than your question. Over a year has past since you last asked about using/trying raidal slicks. It's obvious you want to try them, so do it, it's your $, your time and your car. Just know, not only do they require different air pressure from your bias slicks but also shock settings. Good luck.

Dan Fahey 06-11-2013 04:44 PM

Re: Radial Tire question...
 
What features make Radial Slick or Bias Ply better?

I have run both with not much comparable difference in performance.
Then again my car runs low 13's

Bob Bender 06-11-2013 06:11 PM

Re: Radial Tire question...
 
The Radial on my car was .08 faster @ 4400 lbs.

james schaechter 06-11-2013 07:38 PM

Re: Radial Tire question...
 
Quote:

Originally Posted by 1320racer (Post 385740)
you would figure WRONG when talking about my cars that are stock and super stock legal class cars except the for engines under the hood!

I was not talking about yours, but rather it was more of a statement about mine. Tell you what, enter your car in D stick with me and we can find out......

Seriously, I like your cars and I have not any problem with you at all, but damn, read before you reply. Trust me, it will gomuch smoother on here.

Just in case you want to measure, I do have 30 years of experience and have raced everything from a 1950s Sears Sabre scooter to an A econo altered and lot in between. I sure as heck don't know everything, but I do know that we can all have opinions without having to be arguing every gosh darn point that people bring up.

If you venture to Div. 3 come on over for a beer or six 1320. I will be at Joliet Nats.


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