Run Flat Tire Inserts

I was sitting here trying to decide what the topic for this week would be and surfing the web, when I found  a video about an RV that had a blow out while traveling at highway speeds.  Everyone was fine, but the rig and toad were destroyed.

In the military our Hummers had these things called “Run Flat” inserts.  The idea was that a metal band inside the tire would prevent it from going flat due to sudden lost of air pressure.  Our 2007 Safari Simba has them installed as well.  I found this out when we had to have a valve stem replaced.  The tech did nothing but complain about them as it added time and work to his already busy day.

Run Flat Image for website article.

The way these work is as long as there is air pressure in the tires the thread is kept off the insert.  As the pressure decreases the tire collapses onto the insert but does not collapse all the way.  Preventing loss of control until you can pull over safely.  Now there is a problem here.  Because there is no loss of control, the driver may not realize the issue and continue driving.  This leads to excess friction and damage to the tire until it either comes apart or begins to burn.  Both of which can cause damage to the RV.

The solution is to add a tire pressure and temperature monitoring system to the RV as well.  But that is another article.  Finding these might be  a problem.  However, the cost I think is well worth the peace of mind.  My search of the web shows that the cost should be around $300 for two tire inserts.

 

One thought on “Run Flat Tire Inserts”

  1. What kind of inserts did you get for $300. Where did you get them? Who makes them? Will they fit in large Class A with a GVW of 33 K and tires of 12R 22.5 size? The price you quoted is very reasonable and would be a boon to safer RVing. I was talking to a fellow RVer yesterday and he told me he had experienced a catastrophic LF tire failure and immediately went into the oncoming lane of a two lane Hwy and almost had a head on with a State Trooper. He has since installed the Tyron stystem at about $1300/tire. Thank you this an interesting article and could save some lives.
    John

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