bias ply iroks kick ass.
the radials dont have as strong of a sidewall.
i have tsl's and have had no problems with them.
the bias ply tires have really tough sidewall.
boggers are super tough also.
but they dont sidehill very well since the lugs are not staggered at all.
i wouldnt get ssr's again if they were given to me.
i got some 37x12.5x15 ssr's, they chunked really bad, and i ripped 2 sidewalls in 3 trips.
the sidewalls on them are like 1/2 as thick as other good bias ply swampers.

derek