OK, 14 and 15" panasports are a comon fitment to the Tiger.. but they are possibly not the answer to your problem. What traction issues are you having? Wheel spin? axel tramp? Sliding in corners?
There are plenty of good soft compound tyres in 13" try flaen azenis or dunlop formula r, bridgestone 888, yokohamas.. they are also available in 14 and 15.. and you can fit up to 205 on a tiger with a little trimming of the lips on the hweel arch joints (otherwsie they will likely contact the sidewall)
Question what traction issue are you having.. maybe tramp bars, torque arms etc might be the solution.. and regardless of stopping axel tramp the cars with a warm motor are always going to spin the tyres regardless of how sticky the rubber.