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Re: Slick size,, Is bigger better?
[Re: AndyF]
#1124628
12/01/11 02:27 PM
12/01/11 02:27 PM
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Joined: Jan 2003
Posts: 6,314
The Swamp
MegaDart
master
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master
Joined: Jan 2003
Posts: 6,314
The Swamp
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Quote:
Call a couple of the tire mfgs and see what the tech reps recommend. Tires are engineered to handle a certain amount of weight so I'd think that if you told them the weight of your car, the weight distribution and the amount of power they could quickly recommend the best size for your car.
This. Goodyear recommended the tire I just put on and I probably would not have chosen it due to it's size and compound but the new best 1.16 60' doesn't lie!! 
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Re: Slick size,, Is bigger better?
[Re: ram87]
#1124629
12/01/11 04:46 PM
12/01/11 04:46 PM
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Joined: May 2004
Posts: 12,486
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,486
Taxes & Virus's R-US, NY
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Quote:
I agree with Doc Fiberglass. I had a set of 33 X 18.5 X 15 M/T's on my truck. Changed to 28 X 11.5 X 15 Hoosiers and picked up .3 in the 1/8 mile. Didn't have a traction problem with either and 60 ft. wasn't that much different but sure picked up the last 1300' with the smaller tire.
You went from a 33" to a 28" slick, did you change your gear ratio to keep your roll out the same?
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Re: Slick size,, Is bigger better?
[Re: SCDaytona]
#1124630
12/01/11 06:39 PM
12/01/11 06:39 PM
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Joined: Jul 2008
Posts: 30,632
Florida STAYcation
IcorkSOAK
Financed his waterbed
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Financed his waterbed
Joined: Jul 2008
Posts: 30,632
Florida STAYcation
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Quote:
Remember, the larger the tire, the less grip as measured in lb. per sq. in. due to the contact patch and putting a narrower tire (same circ.) increases grip for the same reasons. Just some food for thought.
VERY good point ...and VERY true.
I wish I could find some more of those 7" Firestone cheater slicks I got at Greenfield Tire in Detroit many years ago. It did not have the "look" of a 10" tire ... but those tires "worked" !
A touch over stock 440 in my 62 ... cast iron mans and Imperial muffs .... 111 mph. And I credit those tires for a big-part of that.
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Re: Slick size,, Is bigger better?
[Re: Dragula]
#1124634
12/01/11 09:25 PM
12/01/11 09:25 PM
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Joined: Jan 2003
Posts: 4,244
Canada
Kam*Kuda
master
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master
Joined: Jan 2003
Posts: 4,244
Canada
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[quote
I have to say bigger is better. I was running small tire cars for a while and went to a Duster with a 17x33, and it always hooks with the 512RB, even on marginal burnouts. It makes bracket racing that much more consistent, and we took home some money this year and more than a couple of events. I am kinda dreading putting my new engine back in my 72 Cuda due to the 9.5" slicks on it....
For those who went to a bigger tire, was there any change at the end of the track. More or less stable??
1970 Barracuda Convertible
1968 Satellite Street Strip car
1654.5 Mustang
1955 Land Rover
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Re: Slick size,, Is bigger better?
[Re: SCDaytona]
#1124635
12/01/11 10:10 PM
12/01/11 10:10 PM
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Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
CHAPPER
master
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master
Joined: Nov 2009
Posts: 3,410
Belpre,Ohio
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Quote:
Remember, the larger the tire, the less grip as measured in lb. per sq. in. due to the contact patch and putting a narrower tire (same circ.) increases grip for the same reasons. Just some food for thought.
This always AMAZED me,,,I know it is Physics 101,,,but,,if it was right and worked like they say it should work,,why don't TF cars run a tire 3" wide....???...more lbs/bite per sq. inch..?? I am not making fun of the OP,,but I have had some interesting discussions/arguments with my kids' friends who were into Physics and thought they knew it all. I didn't have an answer or explanation for them as why the wider/bigger tires worked better,,,just "because that's the way we do it"!!!! 
If you like drag racing, support your local track.
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Re: Slick size,, Is bigger better?
[Re: SCDaytona]
#1124637
12/01/11 11:46 PM
12/01/11 11:46 PM
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Joined: Nov 2003
Posts: 6,293
Rock Springs
Bob_Coomer
master
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master
Joined: Nov 2003
Posts: 6,293
Rock Springs
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Quote:
Remember, the larger the tire, the less grip as measured in lb. per sq. in. due to the contact patch and putting a narrower tire (same circ.) increases grip for the same reasons. Just some food for thought.
Given a perfect world. Of coarse it has to. Everything else is constant.. Say same HP, same weight same compound, it has to "Try" to plant the smaller foot print, of coarse it has to "Hold" more than a larger foot print tire. That's the point of larger tires, less force for a given area, means less likely to spin.
Its more like Cohesion than adhesion as via Velcro.
Fact is you use a good 13x31 or 14x32 tire on the car it will be more consistent in any track condition, you might give up a little e/t due to rotational weight etc, which if your spinning on a marginal track what e/t is there anyways to loose except for the round of coarse. 
[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]
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Re: Slick size,, Is bigger better?
[Re: SCDaytona]
#1124639
12/02/11 02:24 AM
12/02/11 02:24 AM
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Joined: May 2004
Posts: 2,864
IN
Irun5snd8th
master
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master
Joined: May 2004
Posts: 2,864
IN
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I would run Top Fuel tires if they would fit
AFCO, Rons Fuel Injection sponsored Dodge Challenger
Mention Street Lethal Motorsports
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Re: Slick size,, Is bigger better?
[Re: Irun5snd8th]
#1124640
12/02/11 03:42 AM
12/02/11 03:42 AM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
Drag Week Mod Champion
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Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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I would bet, more money and R&D go into a 10.5 tire than any other racing tire except maybe for nascar
Gen 3 power 6.22@110, 9.85@135
Follow @g3hemiswap on instagram
performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Hope to see it in 2013! 
BTW...will it be red again? 
