RE: first go on poly-pipe tyres
Liam.....
I too get the " Get a Real Car" (Which to my reply is : fine you buy the tyres for it then)
People will always claim " Stop playing with toys" they soon shut up when you reply with " OK fine, book me rehab as I am gonna take up drugs to get the same sort of rush"
Besides that,,
I don't recommend going a 15T with PVC... too much RPM resulting in an uncontrolled Slide, Stick with the RZ and the ABS and practice
RZ has enough oomph to pull of easy 10footers...