To be honest the first time I went to the track in my ute was after the setup, every other time I had been was in my old mans bf xr8 and he has not done the bars yet I am currently running Michelan slicks, think ill go back to bridgestone RE55s on the next set I have bilstines all round when I put the 6 pot brembos there were dramas getting wheels that clear, I ended up getting 20" rims so I could get a style I liked, every corner I took after fitting the brembos and dba 5000's had the inside of the 8.5" rim scrubbing on the upper arm and on heavy corners it was like death on the ears. on the old mans ute he popped a front right Bridgestone RE 55s at oran park a few weeks before it closed, seeing I am running a similar setup on the front I am going to leave the spacers in and hoping it helps the understeer I think I am running -2.5 all the time, not really fussed on tyre wear. I will see if I can get some more with spacers in as I would like to try -3.5 with the slicks the traction is unreal and with bilstines it keeps the 420rwkw nicely planted