I paid just over 200 a piece for my nitto NT05 tires... I love them , a noticable upgrade over stock rubber... $900ish dollars.

I would still reccomend an oil cooler if you are going to be driving aggressive on the street.. The lower your oil temps, the better for your motor... I have ModShacks's DIY Oil Cooler and it works wonders...

H&R wheel spacers to me transform the stance of the 370z into a much meaner looking machine... 25 in the rear 20 in the front... Couple that with Eibach or H&R springs for a nice drop and you substantialy improve the look/stance of the car... Those things could be done for around $600 dollars as long as you install spacers yourself and pay to have the springs installed... To do it right you would need atleast rear camber kit and an alignment, so all said and done prob $1000.

Between the new tires (NT05s) and the drop/spacers your car will look way more aggressive.. I love the tread on the nt05s.

Thats about 2,000....

Now with the last 1k I would say get HFC or Test Pipes... Test pipes with my stillen exhaust sounds really good limited rasp and ZERO drone on the HWY.
That would leave you with enough for intakes or an invidia exhaust. Invidia with test pipes is a nice combo. Ive heard a 40th with ERZ res test pipes and the invidia and its sounds very clean , I was very impressed with the sound.

So for 3k I would say get the Spacers, Springs, Nitto NT05s, Camber Arms and alignment, Test Pipes and Invidia Exhaust..

Than next sring shoot for an oil cooler, Intakes, and a tune.

I wouldn't just change the rear tires ...

For about a week or two I had the stock size NT05s in the rear with OEM re50s upfront and the car was not as stable as it should of been , felt notchy up at high speeds, and just overall didn't feel like anything I would advise anyone to try.. Not sure if Invo's would be the same as the more aggressive nt05s but I would swap out all 4 tires and just keep the fronts for future use if necessary.

The fronts were back ordered and once they were installed the car felt like 1,000,000 bucks.

Great tires!

The new Bridgestone Potenza RE-11 tires are great. I've had them on my car for about 3K miles now, and they grip better than the stock ones, corner better, look much better, and wear slower too!

Don't know about wear slower, it's all in how you drive! RE-11's are for a serious enthusiast that likes to attack corners with vigor (like me!), for those less aggressive in the corners there are other options that will probably last longer.

INJEN C.A.I.- $470
F.I. catpipes- $720
F.I. exhaust- $1,100
uprev or technosquare tune- im guessing around $700

your grand total will be $2,990. take $10 n buy your favorite fast food. ;)
happy tuning.

Get a clear bra to protect the crummy soft paint they put on our cars.