i will add one thing to this and this isnt directed at anyone just making a point lol
if you buy a slightly expensive sports car like a Z please dont nickle and dime the parts you buy to maintain it. if you cant put the right stuff into it then dont buy the car lol
i love seeing 370's with tire brands i never even heard nor can pronounce. yea they were only $50 a tire but when they explode and you total the Z i'm sure it'll be worth it.
dont endanger others because you're cheap/broke
anyways to contribute in a positive way to this thread.....
$1500 for my tires in spring. spare rears for end of summer when mine are bald are like another 400ish but i have 3 back up sets now.
$100-ish on a redline oil change kit from Z1 with extra Qt and also injector cleaner additive.
gas - i fill up anytime i get near a 1/4 tank. never goes below unless dire situation. 3/4 fill up of 93 octane is typically $50-60 on avg depending on current price per gallon. (right now it's $4.07/gallon now)
this year i did my diff fluid change since i finally cracked 30k miles after 3 summers of driving (never waiting that long again. it was just gross looking and 15k is my new mark.) i think the cost was like $30? cant remember what the fluid was exactly.
still on OEM brake pads/rotors wiht plenty of meat. however as a precaution i have a new set of pads ready to go on the shelf. they ran me about $150 i believe.