in my opinion....go with the radials.....i know several guys that had thornbirds..and we never found a place where they really worked good....

they pretty much sucked on all counts..highway(they are bias)...they were ok in the sand but a bfg allterrain was way better...they dont clean in the mud unless they get spun real fast...and they hydroplaned in the rain pretty bad....snow wasa joke as well....just my opinion...
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short wide box,350/700r4/3.73posi
71 olds cutlass "S" mom bought new..12.30s@113MPH