I've found it somewhat harder to launch the DRs- I had to launch at ~3200, and they would spin and keep spinning if I tried to go harder. Once they're hooked, however, they held everything my car could dish out. I was making 840-950 RWHP in 2nd and they didn't *ever* twitch.
Chad - my 10.4 pass was at 117 MPH; the track was insisting that I not run faster than 135 MPH without a NHRA license
so I hit the brakes at the 1000' mark. I might have had you otherwise
However, for now you have the DLM-S/C-Only-On-BFG-DRs-First-Time-At-The-Track record ! Pulled a 1.58 60', however *cheer*
Ronnie - they work just fine as a street tire. They even corner fairly well. I run 'em at 30 PSI on the street, 17 PSI at the track.
So Joe - my net is you should tell your "friend" that the Purners w/DRs is a perfect setup for anyone running slower than mid-10s.