TripleJ104@
perhaps you could look at s1 evo or falken st115. good dry grip and decent enough on wet. not as good as gsd3 on downpour thou.
i just let go off my 17" ps3 due to sidewall too soft for my liking. i doubt it could withstand the punishment on a touge outing.

btw, due to space constraint, i've got a 3 point ultra racing front strut bar (white color) to swap with 2 point.
anyone interested? beside waja, should be okay on persona and satria neo.

gsr aka cm5a does have a power advantage over the ck4a and cps variant but plonking a cm5a into a lighter
neo chassis means building a car for the straight line.
the much heavier cm5a engine will return an unfavorable f/r weight distribution, thus, caused wilder 'tail wagging' out of
fast corner. required more steering correction compare to the stock neo campro /cps or ck5a engine.
also, a revised suspension setup and perhaps, moving some moveable parts from engine bay to the rear.\