He does have a point about the mechanic though.

I wouldn't want some one to be angry all the time (that is just unhealthy), but I find his posts hilarious! I welcome him to stay :rofl2:

a mechanic and a customer car owner combined that didn't realize wheel fitment shouldn't be measured with the naked rim in the air and that brake fitment shouldn't be measured without the lugs tightened sounds like a great plot to a comedy about how to **** up a Z, or pretty much any car

An inexperienced owner can be excused (we all started somewhere), but someone calling themselves a professional should be ashamed.

Hahaha, I love how serious you are in your posts. I have to ask though, are you really generally mad IRL or are just mucking around with these sorts of posts?

I apologise if you actually have any anger issues, I don't mean to offend you if you have mental health issues.

Thank you!

Exactly my case. I am a total nub to modding. My Z is the first car I am actually ever modding, so i am new to everything. I have learned alot about forced induction and automatic transmissions over the past few months by the great information and members here! Wheels/tyres I am only just starting to venture into really.

I had some tyres test fitted and dropped the car to the ground from another shop today.

This is with 285/30R19 on the rear:

https://s6.postimg.org/beozwtdox/20170325_104106.jpg
https://s6.postimg.org/d19m4b0cx/20170325_104307.jpg
https://s6.postimg.org/kazs0r4b5/20170325_104100.jpg

And this is the front with 255/35R19 on the front:
https://s6.postimg.org/oew5fiavl/20170325_104118.jpg
https://s6.postimg.org/3w19afwy9/20170325_104115.jpg
https://s6.postimg.org/42jjr9vgx/20170325_104037.jpg

I like the look of the rear tyre but I didn't like the meaty look of the front. So they suggested I run 245/35 or 235/35 on the front. They also suggested to me to lpwer the car about 1 inch, it will naturally camber the wheels in, and that I should run a bit more negative camber.

They said I shouldnt run expensive tyres because that will chew through em. I said I will be chucking TT on this soon so I will need to run some good tyres!

So I hope I can get away without running any camber!

Your front 255 tires seem narrow for the 9.5 wheels. curious if your front wheels are wider than 9.5??

Assume you on stock suspension? If so lowering should help

No issues with the breaks I assume. Doesn't look too bad. And looks like you found a shop that seems to know what they are doing. You should drive by the other place once you get it all dialed in and show them how it's done.

We spun the front wheel and could not hear or see any issue with the brakes. But the mechanic still wasn't sure if it was clearing it because he said it looks extremly close to the brake and hasn't seen it that close before on any wheel/car.

And yes I am on stock suspension, stock height atm. They said they can lower it for $700 (about $500USD). Wondering if should just get coilovers myself and get them to install it.

Which springs are they intending to use?

I didn't ask them.

Says 9.5 on the box.

Why 285/30? Should go with 285/35 on da rear.

Da lower profile u run da lower ur ride needs to be to look right.
Remember da rule.. wheel gap to be 1/2 of sidewall or less unless u run mild offsets

Dose are not mild offsets

I don't really wanna go bigger sidewall, already looks meaty az to me. I want lower profile look if possible.

I would recommend you find out, so you can research them.

that actually looks bigger than a 285/30 to me

might just be the angle of the photos, but front and rear tires look like monster truck status

Yeah they do look big! I may drop to 245/35 and 275/30

Sound's like you're set on a 26" tire (+ or -) and you want good ones?

Look at the spec on the 275/30,295/30/19 PS4S's....section 10.9/11.9 & tread 9.7/11.1 & diameter@25.6/26.0"
They would give you an even fit on the wheel's & a slight rake.

The rear tire's you tested looked like PS2's,,,unsure what the front's are;almost look like winter tire's?

Yea the rear was Michelenin, not sure what model. The front I didn't check. We were merly testing the sizes and see how it looks/feels.

I may get a set of pilot super sports.

I have just been getting alot of conflicting advice from different tyre shops here in Australia. Some shops are saying that 295/30 should fit perfect on the rear, others are saying 'no way', some are saying 275/30 would struggle on the rear and I should do 255/30.

Getting confused with all the different advice from them. So I am just going to lower the car an inch and go with 275/30/19 rears.

Watch the diameter ratio/diference between the rear and the front tire (I think it has to be with in 1 or 2%, but I could be off on that number) or you it will cause traction control to go haywire.

Should I stick to stock tyre size? 245/40 and 275/35?

I did not say that. Just watch the ratio.

http://www.the370z.com/track-autocro...s-problem.html

Also,,,if you get too small with the tires-the load rating capacity may be a concern.
With the front tire's have the biggest issue; i'd put on the largest possible (that turn's all the way left & right) without rubbing/scuffing....closest pinch point's will be the front & rear of fender's (outside part)....you should be able to slip your finger's in the gap or at least finger tip's.

Rear tire's are game for whatever you throw at it.

Probably the narrowest & shortest that I would run/pending your offset dilemma.https://uploads.tapatalk-cdn.com/201...f79e9ff147.jpghttps://uploads.tapatalk-cdn.com/201...47d7a33461.jpghttps://uploads.tapatalk-cdn.com/201...aad89ce680.jpghttps://uploads.tapatalk-cdn.com/201...1dd4ec9c79.jpg


Sent from my iPhone using Tapatalk

Mate - you are in Adelaide I think ..........

Give yourself a huge break and talk to North Terrace Tyres who are top guys - they are the SA Penske shock guys AND also sell most of SA's motorsport tyres.

If you want to go slightly cheaper, talk to SA MotorSport tyres

Both companies are motorsport biased but if you are talking to Tyrepower or BJTM you are going to get crap advice.

255 wide is the sweet spot for 9.5 and you can go up to 275 and not worry.

285 or 295 is the sweet spot for 10.5 and you can go to 305 or even 315 at a pinch.

These tyres are going to cost (because Australia tax .......... PITA but tyres here are twice the cost of what they are in the US - just 'cos).

You will get lowered springs via North Terrace Tyres and they can help with alignment/setup as well.

Because you don;t want too large a difference in OD, there are constraints. The other thing to be wary of is the tyre load-carrying rating ... with a modded car and a driver under 25 or 30yo, your insurance is suspect if the load index is not correct ........ and for some reason, Nissan specified a higher than needed load index for the front (95) and higher for the rear (96). Fark knows why, but any tyre you put on the car needs to respect those requirements.

This narrows your choices - a shed-load

1. Taller tyres: F = 275/35R19 (675mm) and R = 285/35R19 (682mm) OR
2. Shorter tyres: F = 255/35R19 (661mm) and R 295/30R19 (659mm)

Tyre options are limited in these sizes UNLESS you import them from the US (Tirerack.com)

All I could find in the taller tyres were Hankook S1 Evo 2 at 245/40R19 and 275/35R19 and nothing in the sizes I quoted above (apart from some dubious chinese cr4p).

Smaller tyres were available in Continental Conti 5 and Michelin. The rear is actually a Porsche size, but they will come with Porsche owner tax.

My only suggestion is research the Korean brands . Kumho and Hankook plus Michelin and Continental - stay away from WinRun and the other chinios cheapies ........

The smaller 255 front is a BMW rear and the 295 smaller rear is a Porsche size, so you might get lucky.

If you are still struggling, PM me and I will put you in touch with the Kumho MotorSport dealer in Melbourne who should be able to help.

You are in the process of discovering the pitfalls of wheels ........ they are ~ half the cost as the tyres will cost you just as much or more (and wear out 50% faster).

Are you sure that your pocket can stand a TT ........ purchasing the kit is half the cost to get the car going again and you can budget for one-third the cost of the kit each year for FIAT stuff (fix-it-again-tony) ..........

Shadow,,,Sound's like you have a knowledgable Mate; Lending a hand.....IDK all of the law's down there,but sound's like he's been there,done that & got a T-shirt (or 2)
:)