Hotchkis lowering kit,need tire advice

Okay I'm sure this has been asked,but ima ask again..I have a 13 with a complete lowering kit from Hotchkis (prolly wrong spelling) but I'm having bumping,and creaking noises.Have had it up in the air tightened all bolts,end links,e.t.c.I did notice my rear tires are rubbing a bit,and 3 inch full kit from bassanni is hitting to..Resolved exhaust issue putting a bend in the crossover points.My tires are shot and I need to replace.Facrory p zeros,not a fan.So can I put a 265 30 on rear? Have 255 40's now and as said rubbing a bit.Im not totally sure how low the car is,as I bought it this way.Oh are 19 inch wheels as well..Any help would be appreciated. Have an express kit I'll be bolting on,just a 100 shot with a tune,so need to get all this figured out..Thanks for any advice..

I'd go back under, lube everything and recheck. As far as the tires go depends on the width of your rims. If you have 19's and the rim is 8.5 I'd go with 245's. If 9.0 then 255's. Try one of the tire emulators so you can virtually mount and understand what results different size tires/width's will actually provide you when mounted. Several good tires out there in the sizes you need. I'd talk to one of local tire shops to get their recommendations and then research some online stores for the best deal.