this should help

Tires:
Front:
Proline Blade M3 Good on hard packed
Proline The Edge R3 works good in the loose and hard packed
Losi Red Directionals same as above.....also depends how you mount them
Losi 8 Rib hard pack
Losi 4 Rib need more time on these
Rear:
Proline Square Fuzzie T M3 hard packed
Proline Hole Shot T M2, R3 hard packed to slight loose clay
Proline Bow Tie T M2 hard packed to loose
Proline Evil Twin - Truck R3 hard packed, Blue Groove
Proline Snake Eyes M3 lots of forward and side bite on loose conditions
Proline Gladiator 2 M3 lots of forward but lacks side bite, good med loose tire
Proline LugNut M3 good in slight loose with hard pack under
Proline Pro-97 Step Pin M3 same as above, M3 is to soft....pins burn off after 2 races
Losi IFMAR STUD good with little dust hard packed
Losi IFMAR-Pin hard packed
Losi Step-Pin Red, Silver best off road tire i used all year...constant, good in loose
Losi Taper-Pin Pink Hard packed Blue groove....tire for CRCRC
Panther Stud Good in loose lacks forward bite in real loose
Panther Step Pins i think they suck
Proline Super Square only find on ebay...no longer made