tire

They are almost gone on my rear tire, but the front one are still huge. Is it because of wrong suspension setup? thank you

Pilot power 3 V Pilot Road 4 does any body have exsperence with both as my current pilot Power 3 are just finished with 9000 Kms and i loved them but winter is coming and I read good things regards Pilot Road 4 are they a better tire than pp3 i don't do track days and the bike is just for fun...