Tone, I think that's exactly what got me. I've done several of these things now and never had any problem with my BFG Mud Terrains, even at the longer, faster, and pretty intense ERS event with more varied surfaces to run on. I've always been opposed to the "air them down" school of thought some rally folks apparently subscribe to, and I usually run at higher pressure. However, this time I just plain made an oversight. Live and learn. :-)