the special tracs are a very good tyre but the side walls dont like being rubed against rock very well i ran these for 18 months and was very happy apart from the said side wall problem have you looked at the fadima trail ades or the greenway aneconders these are a copy of the tls bogger and are an unstoperble tyre this is from my own personel use i know run 38.5 boggers and can drive anywhere other trucks with simex and lockers can get hope this helps dave