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-   -   ok i need help with tire size (http://www.the370z.com/wheels-tires/121575-ok-i-need-help-tire-size.html)

Ken_nismo34z 05-12-2017 11:40 PM

ok i need help with tire size
 
im looking for flush look on my car 2015 370z nismo i got rf2 rohana wheel
front :20x9 rear:20x12 offset 25 all around wat size of tire should i go with??? so i wont loose air or my rim wont stick out too much? and do i need spacer in the front and how much anyone help a noobie out thx


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jchammond 05-13-2017 01:40 AM

3" stagger on 20's....would be easier on 19's; but here goes.
If you're lowered & want a tad shorter tire: 255/30,325/25 in Michelin PSS.
could go 265/30's up front....the diameter of these tires are just 26.1/26.3" tall & are usually used on lowered Z's...the 265/30 is also 26.3.
Your taller choices are gonna be a bit stretched on the rear's-in the PSS...245/35,305/30's
26.8/27.2" tall.
as for spacer's; it all depend's on your camber setting- if wheels were set straight up & down...your rear wheel lip would be 1/2" further out/ so 0* camber up front & stock neg. camber out back (-1.5/-2.0*)...and you will be close to even fitment.

jchammond 05-13-2017 01:42 AM

Include your ride height & any suspension mod's....that will help.

jchammond 05-13-2017 01:49 AM

Another fatter option;
Just clicked over to the Nitto website & seen the Invo's make a 275/30,345/25@26.50/26.65" tall & 10.63/13.66" section width....they would be fat & ride good-as i currently use the invo's....They will be heavier than the Michelin's/but may cost a bit less....& probably the best uniform fitment for a 3" stagger.

OptionZero 05-13-2017 01:54 AM

Let me get this straight

You bought wheels

In a 3 inch f/r stagger

Without researching ahead of time how to achieve the "flush" look

Without searching tire sizing

Without telling us ride height

Without telling us what suspension mods you have/plan to have

Given all this, the best solution is:
1) return your wheels or sell them immediately to whoevers dumb enough to buy that sizing

2) Read up alot

3) buy wheels/tires/suspension mods with what you've learned

Ken_nismo34z 05-13-2017 06:57 AM

Quote:

Originally Posted by jchammond (Post 3652616)
Include your ride height & any suspension mod's....that will help.



im on baggedif that any help


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jchammond 05-13-2017 09:13 AM

Quote:

Originally Posted by Ken_nismo34z (Post 3652639)
im on baggedif that any help


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un-sure how much backspacing the bag's take up(in relationship to stock),,,also are you planning to drop over the outer edge of tires?

jchammond 05-13-2017 09:16 AM

if you could post your current wheel/tire set-up & throw in a pic or 2...that would help;
as i've almost already crossed out the 345/25's on rear.

Ken_nismo34z 05-13-2017 09:57 AM

Quote:

Originally Posted by jchammond (Post 3652666)
if you could post your current wheel/tire set-up & throw in a pic or 2...that would help;
as i've almost already crossed out the 345/25's on rear.



https://uploads.tapatalk-cdn.com/201...fe66e00550.jpg this is current set up on stockwheel


https://uploads.tapatalk-cdn.com/201...165c439df9.jpg
this is a set up with cheap tire 245 35 20 front. and 275 35 20 rear losing air on rear tire i think becase too small and rim stick out too much



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jchammond 05-13-2017 11:38 AM

Heck; you're practically there!
you gotta get car on some level ramps or block's/that fit completely underneath the tire's.
Be sure its a level surface;as you will need to turn the front all the way to one side & then the other @ride height & with all the weight in car (including 19gals. gas)...get down low & get out the ruler & any kind of measuring piece (different width's of boards/blocks etc...)
measure up your pinch points on inner & outer...you gonna try & split the gap between inner part of rear fender & whatever is closest...and do the same on front (most likely upper control arm).
If you're in tight with your alignment guy-he may put it on the rack for you...just be sure you're measuring as if you are driving down the road.
You may be able to lose a little bit of that negative camber.
Good Luck!

jchammond 05-13-2017 11:45 AM

That's a huge amount of -camber on rear...may have worn a hole on inside of tread.

OptionZero 05-13-2017 12:36 PM

You need to stop giving wheel sizing advice.

First of all, if he's on bags, then presumably thats not his drive height, so the camber when he's fully dropped is irrelevant

Second, you talk back spacing so much, but its all worthless. Wheels aren't sold with backspacing measurements, they're listed with width and offset.

Third, the Z has an infinite amount of space underneath, so no one's ever gonna hit anything on the inside.

Fourth, this guy is NOT on the right track. He bought bags and wheels without any thought to suspension parts, wheel sizing, or tire sizing. Pretty much the WRONG track.

Lastly, if he's on bags, he should be running super aggressive sizes, not the conservative stuff you're always recommending.

jchammond 05-13-2017 12:59 PM

Sounds like you need to tend your own business OZ!
As I do not know anything about bags, but was attempting to lend a hand & not bash!
You set your car up the way you like it & I'll do the same to mine.


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Rusty 05-13-2017 04:45 PM

Quote:

Originally Posted by OptionZero (Post 3652740)
You need to stop giving wheel sizing advice.

First of all, if he's on bags, then presumably thats not his drive height, so the camber when he's fully dropped is irrelevant

Second, you talk back spacing so much, but its all worthless. Wheels aren't sold with backspacing measurements, they're listed with width and offset.

Third, the Z has an infinite amount of space underneath, so no one's ever gonna hit anything on the inside.

Fourth, this guy is NOT on the right track. He bought bags and wheels without any thought to suspension parts, wheel sizing, or tire sizing. Pretty much the WRONG track.

Lastly, if he's on bags, he should be running super aggressive sizes, not the conservative stuff you're always recommending.

I don't have enough room to run a true coil-over on the rear. :shakes head:

OhioYJ 05-13-2017 04:55 PM

Quote:

Originally Posted by jchammond (Post 3652748)
Sounds like you need to tend your own business OZ!
As I do not know anything about bags, but was attempting to lend a hand & not bash!
You set your car up the way you like it & I'll do the same to mine.

All OptionZero does is try bash people for not knowing and trying to ask questions. Quite frankly he makes this forum a toxic enviorment and not friendly for new comers.

Sure you could search and find answers to questions, but having archives of information is not what keeps forums alive and thriving. Kudos to you for helping, as this forum shouldn't be just one person trying to prove they know something....

OptionZero 05-13-2017 05:11 PM

Its not helping when the advice isn't accurate


Building, keeping, and using stored knowledge is ...well, it's how anything advances


Continually asking the same things and redoing mistakes is hardly "alive"
Really it's just noise for the sake of noise

The op didn't put much effort into his post or his own car, so I'm not sure what the problem is when someone tells him to use the tools available


The only advice this dude needed was to sell his wheels and start over. Dunno why folks are making it more complicated

Ken_nismo34z 05-13-2017 05:38 PM

damm i only need help in tire size and people are so harsh


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Nixin 05-13-2017 05:52 PM

OP, pardon my ignorance, but what are you trying to achieve with this set up? Is this just a statement of 'vehicular obesity' or is this some sort of millennial generation extreme hot rodding? I am totally confused. Enlighten us.

OptionZero 05-13-2017 09:39 PM

Quote:

Originally Posted by Ken_nismo34z (Post 3652825)
damm i only need help in tire size and people are so harsh


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pop quiz, what did you learn from this thread?

Ken_nismo34z 05-14-2017 09:06 AM

Quote:

Originally Posted by OptionZero (Post 3652921)
pop quiz, what did you learn from this thread?



that ur a ****?


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