Chris,

I'm slightly confused.

You stated that you were using " BF Goodrich 185r14,  D ply, 1680 or so
lbs at 60 psi" and had a separation problem.

I know of no BFG Goodrich 185r14 tire that is load range D and 1680
lbs load rated at 60 psi.

Please tell us the model?

But then you replied to Kim's reply and said the tires were "
Bridgestone RD603"

I don't believe this tire has been in production for a while. If you
bad experience was recent I'm wondering if perhaps the tires were
  dated and perhaps that was the reason for the failure.

larry
roadhaus.com

- - -

Date:    Sat, 14 Mar 2009 19:53:14 -0400
From:    Chris S <szpejankowski@GMAIL.COM>
Subject: Re: Tires - Why oh why NOT?

Or you could do like I did.  BF Goodrich 185r14,  D ply, 1680 or so
lbs at 60 psi always rotated and balanced on time and ALWAYS properly
inflated.  I had 3 tires fail within 6 month with separated belts.
All 3 tires failed completely within about 30 miles once the belt
started letting go.  A less astute driver might have never felt the
initial belt failure and had a stupid accident when the tire went
completely.

Date:    Sat, 14 Mar 2009 22:34:47 -0400
From:    Chris S <szpejankowski@GMAIL.COM>
Subject: Re: Tires - Why oh why NOT?

I'm assuming this one is for me.  They were Bridgestone RD603.  I
replaced them with the excellent Hankook RA08 in 195r14 size.  The
Hankook will go to nearly 1900lbs at a whopping 65psi.