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Unread 03-14-2013, 08:42 PM   #1
MyKeyB
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Why not rim screws instead of beadlocks?

I was reading a thread on the zj forum and the subject of beadlocks came up. That got me to thinking about something I have not thought of for a few years. Why don't off road guy's run rim screws instead of beadlocks like drag guys do? It's cheap, easy, and should work. What am I missing? I'm sure if you had to take a tire off and then remount it, it would kinda suck. Other than that,why not?

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Unread 03-15-2013, 10:35 AM   #2
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Quote:
Originally Posted by MyKeyB View Post
I was reading a thread on the zj forum and the subject of beadlocks came up. That got me to thinking about something I have not thought of for a few years. Why don't off road guy's run rim screws instead of beadlocks like drag guys do? It's cheap, easy, and should work. What am I missing? I'm sure if you had to take a tire off and then remount it, it would kinda suck. Other than that,why not?
You mean screw the tire to the rim?
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Unread 03-15-2013, 11:01 AM   #3
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Yeah.

http://www.mickeythompsontires.com/tech.php?bulletin=s4

I see in the link I posted they don't recommend useing rim screws with drag radials. Maybe a liability on the street or maybe because most drag slicks run tubes?

Rim screws:
http://www.summitracing.com/parts/mor-90100
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Unread 03-15-2013, 11:18 AM   #4
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Complete shot in the dark...

Offroading puts lateral forces on the sidewalls. I see the tire ripping off of those at 5psi.

I'm sure they work great with radial forces to prevent spinning the rim when the tires hook up.
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Unread 03-15-2013, 11:28 AM   #5
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Being a drag racer as well, I'm very familiar with rim screws. I use them on my drag slick but I glue my drag radials. The purpose of the rim screws is to keep the tire from rotating on the wheel as the car launches. If your running tubes in your slicks and the tire moves on the rim, it will rip the valve stem out as well. Most of the really fast drag cars use bead locks as they work better.

I'm not sure that using rim screws on a Jeep would accomplish keeping the tire on the wheel. It seems low air pressure and sidewall loads are what causes the tire to push off the the wheel and I don't think the screws would grip the bead good enough to hold it on. Also, some of the heads of the screws sticking out on the wheelside would probably get broken off playing in the rocks.
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Unread 03-15-2013, 11:52 AM   #6
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Makes sense. I started thinking about lateral force after I posted the question. I only wheel lightly so it's not anything I would ever need or try, just something I have wondered about.
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Unread 03-15-2013, 07:18 PM   #7
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The rocks would rip them out before you got a chance to try it. If they did make it, The first time i saw the wheel or use the sidewall its over.

Now if you took a fake lock like classic locks, Did alot of drilling and what not it might hold up. But with the $$ in all that, You could have a set of aero BL's for the price of a couple M/T wheels.
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Unread 03-17-2013, 12:52 PM   #8
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Also keep in mind that drag tires have a thicker bead area specifically to allow the screws. Most street DOT tires aren't near as thick.
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Unread 01-10-2014, 05:27 PM   #9
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old thread but.....

i have seen guys run screws offroad, instead of running the screws from the outside of the wheel inward, they run them upward on the inside of the bell of the wheel. this covers the issue of the lateral pressures presented while off roading. still not real beadlocks, but a heck of a lot cheaper. no personal experience but seems like it would work.

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Unread 01-10-2014, 05:37 PM   #10
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Now that seems like it would work. Thanks for the reply.
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