Mustang Parts
   Carrying Saleen wheels and Bullitt wheels.

Friday, July 20, 2012

Swedish Magazine: "Jeep Grand Cherokee Unsafe"

Swedish Car magazine Teknikens Varld has posted more video on the shocking tip-up of the Jeep Grand Cherokee on their "moose test", which is similar (though not identical to) the Consumers Union lane change test.  

After Chrysler's engineers checked out the vehicle, and re-loaded it according to their measure of GVW (which was 200+ lbs lighter than Teknikens Varld's weight), the vehicle no longer tipped up.  However, if you watch the video, you'lll see that it is roll-hopping substantially, with the front wheel in the air much of the time.  And in multiple runs, the Jeep suffered a tire de-bead.

A de-bead is when lateral forces on a tire push it so far that it loses its bead seal, and allows air to escape.  This results in a nearly flat tire on the de-beaded wheel, and is dangerous because if there is a rim hit, that wheel could dig in and increases the risk of a rollover.  

You can watch the video for yourself here: (and I highly suggest you do)

Teknikens Varld conclusion is that the Jeep Grand Cherokee is not safe.  I don't entirely agree, as this is a very demanding maneuver, and the vehicle is loaded to maximum capacity.  For most people, who will be driving the vehicle at a lighter loading, there is probably ample safety margin.  However, it is significant that competitors such as the Volvo XC90 pass the same test.

I think Chrysler has some more ESC tuning work to do on this product.  

No comments: