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Old 02-04-2009, 07:55 AM   #1 (permalink)
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Runflat comairison

Can PVC runflats be installed on Wheels that originaly had Mags?

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Old 02-04-2009, 10:30 AM   #2 (permalink)
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Yes.
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Old 02-05-2009, 10:45 AM   #3 (permalink)
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What are the advantages of the PVC runflats over the Mag??
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Old 02-05-2009, 11:42 AM   #4 (permalink)
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No Fires! LOL
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Old 02-05-2009, 12:01 PM   #5 (permalink)
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the magnesium inserts need to be cut down to run the tire aired down low, or you'll ride on the inserts and damage the tire.

i had the pvc inserts as well. they weigh a ton.

UHMW (ultra high molecular weight polyethelyne) is the way to go.

i personally liked the magnesium inserts, as you could drive on them if you had a flat. with a 38 or larger i would run those. with the 35's i ran, the tire couldn't flatten out enough before it hit the inserts.

if your insert gets hot enough to ignite, you have way bigger problems.

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Old 02-05-2009, 12:26 PM   #6 (permalink)
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I prefer the cut down mag runflats, cheap and easy to install (two piece). The only reason the full (no-cut) runflat had fire issues was because of the runflat feature and not the beadlock feature... They even used a special goopy lubricant to reduce teh fire risk.
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Old 02-05-2009, 12:39 PM   #7 (permalink)
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I've personally seen the rubber inserts run on with a flat tire and they get so hot that it basically melts the tire/runflat and destroys both. I run the mags with the runflat cut down, they're cheap and easy to deal with imo.
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Old 02-05-2009, 12:54 PM   #8 (permalink)
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Mabe I will keep them then. I just dont wana start any fires when I cut them down.
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Old 02-05-2009, 02:45 PM   #9 (permalink)
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Use a sawzall to cut the majority of the runflat down. Then clean it up with a 4.5" grinder with a cutoff wheel. You can use a grinding disc to make it smooth if you want but its personal preference. I cut down mine and didn't have any fires or problems. Magnesium has a flash point close to 900*F. Just take precautions with the dust and do it where you can easily sweep up the dust. If you do start a fire, whatever you do, don't try to put it out with water. Use dirt, sand, or something like that as water will only make it burn hotter.
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Old 02-05-2009, 02:57 PM   #10 (permalink)
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yea sounds good. Looks like I got a set of Beadlocks CHEEP.
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Old 02-05-2009, 07:30 PM   #11 (permalink)
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Quote:
Originally Posted by actionpaintball View Post
I prefer the cut down mag runflats, cheap and easy to install (two piece). The only reason the full (no-cut) runflat had fire issues was because of the runflat feature and not the beadlock feature... They even used a special goopy lubricant to reduce teh fire risk.
let's be clear, the fire risk is from friction, not the magnesium itself. rubber on rubber, rubber on magnesium, whatever, the rubber ignites first. the ignition temperature of magnesium is between 800 and 900 degrees F. the tire would ignite far before that. the mag runflats did indeed have a grease packet glued to them that broke open in the event of a flat. i bet it made a hell of a mess too as purple power and a pressure washer wouldn't remove the remnants of the packet of my runflats.

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Old 02-05-2009, 08:09 PM   #12 (permalink)
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The problem with the rubber run flats on hummer wheels... is that to OEM specs you need to use a tube of runflat lube per wheel. It eliminates the friction issues on the H1's.

It's not recommended to use H1 runflats [rubber one or two piece] without the lube.
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Old 02-06-2009, 07:37 AM   #13 (permalink)
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Ok, Im going to be cutting the Mags down so I will be able to air down as far as possible if nececary. I think I got the answer I was looking for.

Thanx Dave.
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Old 04-13-2009, 12:07 PM   #14 (permalink)
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i just picked up my mag runflats,i am planning on running 38 inch tsl,s.do i need to narrow my runflats because of a bigger bead?
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