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Be warned, this is probably a dumb question! #2724669
12/16/19 11:22 PM
12/16/19 11:22 PM
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hudsonhornet7x Offline OP
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I have been thinking about how the 2018 Dodge Demon came with drag radials front and rear. I would imagine that car had lots of grip in the corners. Would it be possible to do something like that using a 15" diameter wheel and some form of a drag radial? Or is there a better solution for a DOT tire that grips?

Let's say you wanted to build a nascar " tribute" and use 15" wheels but needed a tire that you could actually drive around in. Does such a tire exist? I said this was probably a dumb question but I am here to learn. Thanks.

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2724732
12/17/19 10:35 AM
12/17/19 10:35 AM
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Drag radials do provide somewhat better lateral grip than a standard tire and at 315mm, and provide a fairly large footprint for decent lateral accelleration numbers on the Demon. However, drag radials are not the best handling tires for serious corner burning as they tend to have soft sidewalls that allow a fair amount of deflection, which in a 15" size with a 50-60 series sidewall, will flex quite a bit. For a street oriented tribute car, yes, a 305/60Rx15 square set up of drag radials could give some street going grip, provided you never encounter rain. For general street driving, I think they would be fine. I wouldn't necessarily recommend a drag tire if you were considering autocross events. In this case, a dedicated race tire would be the better solution.

For fair gripping street tires, the selection is limited and in radial construction, none have particularly rigid sidewalls. One of the softest tread and newest carcass designs out there is the Mickey Thompson SR tires. They have a wide range of 15 sizes from skinny front runners to wide steamrollers. Nitto has a series of drag radials, some that have reasonable tread designs that may sacrifice ultimate grip for acceptable adverse weather capability.

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2724740
12/17/19 10:56 AM
12/17/19 10:56 AM
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The brakes will prevent using a wheel that small in dia. They do come with drag radials front and rear. You could try to find a more vintage looking set of wheels. Since the Demons are considered collectibles, you may go for a Hellcat or Redeye, but hey it's your money.

Re: Be warned, this is probably a dumb question! [Re: Skeptic] #2724787
12/17/19 12:41 PM
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hudsonhornet7x Offline OP
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I have looked at the S/R Radials. They would probably be the best choice.

I am not trying to do this with a modern car- I was thinking out loud and using the Demon as a reference. In other words if the 2018 car can get away with it why not a 60's car.

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2724846
12/17/19 02:44 PM
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Originally Posted by hudsonhornet7x
I have looked at the S/R Radials. They would probably be the best choice.

I am not trying to do this with a modern car- I was thinking out loud and using the Demon as a reference. In other words if the 2018 car can get away with it why not a 60's car.


I'm thinking vintage 50's Nascar look for my 51. So I heard you.

Re: Be warned, this is probably a dumb question! [Re: Sniper] #2724863
12/17/19 03:31 PM
12/17/19 03:31 PM
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Originally Posted by Sniper
Originally Posted by hudsonhornet7x
I have looked at the S/R Radials. They would probably be the best choice.

I am not trying to do this with a modern car- I was thinking out loud and using the Demon as a reference. In other words if the 2018 car can get away with it why not a 60's car.


I'm thinking vintage 50's Nascar look for my 51. So I heard you.


Sounds Awesome!

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2724880
12/17/19 05:42 PM
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For Op and and any others, "square" regarding tires means, all four tires are the same .


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: Be warned, this is probably a dumb question! [Re: jcc] #2724886
12/17/19 06:08 PM
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Originally Posted by jcc
For Op and and any others, "square" regarding tires means, all four tires are the same .


Thanks, I had not heard that term before. I think it would be interesting to build a b-body into a decent handling car. I know it will never be Viper-like, but I still think the idea has merit.

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2724895
12/17/19 07:02 PM
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there have been several builds that basically merged a B body with a new Charger or Challenger. In a nut shell, they weld the early body in place of the newer one, keeping the newer suspension, floor pan, drivetrain, braking, interior, etc.

Here's one done to a 69 Charger.

Re: Be warned, this is probably a dumb question! [Re: Sniper] #2725067
12/18/19 10:22 AM
12/18/19 10:22 AM
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I hadn't thought about the unfamiliarity of the "square" reference. Thanks for pointing that out.

There are a couple of obstacles to doing this type of set up on a vintage car and most center around the front wheel well. Tire width, height, and wheel offset are the three biggies. The maximum front wheel offset that can be used on a vintage Mopar using a 15" rim is 4.75". Any more and it WILL be hitting the ball joint. This limit in offset means you cannot use wheel offset to put a wider tire further into the well to avoid wheel opening interference. So now you are limited in how wide you can go in the front. This creates a self limited concern with the rear now as well. Additionally, since most vintage Mopars do not have round wheel openings to match the radius of a tire, the height can cause a concern with well lip interference, or if the vehicle is significantly lowered, bracing inside the fender. We also again have the front/rear match up look; a 26" tire that works good in the front may look short in the rear. Of course, you can section and bulge or flare a front fender to create additional space to allow a matching front to rear tire set up.

Of course this will vary from vehicle to vehicle and some will be easier to do than others.

My Challenger runs 26x10x15 front and 26x12x15 rear tires. They fit everywhere and only required two mods; offset leafs in the rear and rolled lips on the front. For grins, I did check out the 26x12 on the front. Ain't happening in a 15" rim without significant fender mods.

Re: Be warned, this is probably a dumb question! [Re: TC@HP2] #2725070
12/18/19 10:29 AM
12/18/19 10:29 AM
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Originally Posted by TC@HP2
I hadn't thought about the unfamiliarity of the "square" reference. Thanks for pointing that out.

There are a couple of obstacles to doing this type of set up on a vintage car and most center around the front wheel well. Tire width, height, and wheel offset are the three biggies. The maximum front wheel offset that can be used on a vintage Mopar using a 15" rim is 4.75". Any more and it WILL be hitting the ball joint. This limit in offset means you cannot use wheel offset to put a wider tire further into the well to avoid wheel opening interference. So now you are limited in how wide you can go in the front. This creates a self limited concern with the rear now as well. Additionally, since most vintage Mopars do not have round wheel openings to match the radius of a tire, the height can cause a concern with well lip interference, or if the vehicle is significantly lowered, bracing inside the fender. We also again have the front/rear match up look; a 26" tire that works good in the front may look short in the rear. Of course, you can section and bulge or flare a front fender to create additional space to allow a matching front to rear tire set up.

Of course this will vary from vehicle to vehicle and some will be easier to do than others.

My Challenger runs 26x10x15 front and 26x12x15 rear tires. They fit everywhere and only required two mods; offset leafs in the rear and rolled lips on the front. For grins, I did check out the 26x12 on the front. Ain't happening in a 15" rim without significant fender mods.


Very informative. Thank you for that, and got any pictures to share with the Challenger? Is sounds great.

Re: Be warned, this is probably a dumb question! [Re: hudsonhornet7x] #2725252
12/18/19 11:21 PM
12/18/19 11:21 PM
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Pic of Challenger, its nothing special really. Basic suspension combo - Front; 1.22 t-bars, 1.125 sway bar, CE adjustable shocks, bars cranked way down low. The t-bar pivot is on the same plane with the lower ball joint. Rear; zero arch oval track springs. Installed these actually look like the curve backwards, but they don't. They have no arch at all. .875" axle hung sway bar, CE adjustable shocks. Car overall sits very low. Top of the roof is armpit level on me which means it is about 4' 8" at that point.

100_1843.jpg






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