P265 Front and P305 Rear

URI · 03-11-2018, 02:01 PM

After putting on 16500 mi on the Nismo with the OEM Potenza's I noticed the deteriorating tread on the rear 385/40/19 tires. I'm ready for new shoes and am wondering what will be the maximum width increase for both front and rear.

Up front going from a 245 to a 265 shouldn't be a problem, there is a lot of fenderwell up there. My concern is could the rear fenders handle a jump to 305's from a 285? I'm hungry for a more aggressive stance a 305 will give, and the look of the car from behind.

I know the 10" front wheels and the 10.5 inch rear Rays can fit them fine, I'm just wondering if It will be poking out on the sides?

As a rule of thumb when you go up one tire size width it increases the footprint by a half inch. Measuring seems to show it should work, anyone have any experience with this?

Thanks!

OTW Z-Boy · 03-11-2018, 02:15 PM

I’ll leave this here for you...

The "Will it fit?" thread

HEK · 03-11-2018, 06:12 PM

Bottom line what's the widest tire we can put on the Rays...and brand...I will ask Discount Tire Direct this Summer and compare..

danegrey · 03-11-2018, 08:59 PM

I ran 305s on the back of my Z and never had a problem with them.... and they looked great with no spacers...

Spooler · 03-11-2018, 09:12 PM

On Nismo wheels the widest you can run is 285/35/19 front and 325/30/19 rear. 265 and 305's will fit not problem.

HEK · 03-11-2018, 09:52 PM

Quote:

Originally Posted by Spooler

On Nismo wheels the widest you can run is 285/35/19 front and 325/30/19 rear. 265 and 305's will fit not problem.

I have a '13 Z sports package/Touring, same as a Nismo set??...pardon my ignorance but never looked into a Nismo so I do not know the specs

jchammond · 03-11-2018, 10:14 PM

Quote:

Originally Posted by HEK

I have a '13 Z sports package/Touring, same as a Nismo set??...pardon my ignorance but never looked into a Nismo so I do not know the specs

Nope; you have 19x9+47F & 19x10+30R
NISMO is 9.5+40 & 10.5+23

OptionZero · 03-11-2018, 10:23 PM

it's like reading the existing threads is the hardest thing in the world

or using google to see what wheels you have stock . . .

HEK · 03-12-2018, 03:58 AM

Quote:

Originally Posted by OptionZero

it's like reading the existing threads is the hardest thing in the world

or using google to see what wheels you have stock . . .

In no way, I will be rude as I think you are a young man who uses the web for answers and has the time for it. I googled the question asked in this thread and it brought me here. Did not search inside this forum as I was multitasking so I asked those who may have already experienced in person a change in size/ width on their forged Rays. Back when I was young and went to school with Jesus and Moses word of mouth ruled as there was no web and you trusted the answers you got. I have been misinformed both by Google and places that sell tires online as most customer service folks work on commission and they try to sell you not what works for you but what gives them a better salary. On that note, sometimes when you have nothing good to say just smile and be done with it and not post it as you may just look like an idiot more so than the OP, carry on now get back to your video games .

jchammond · 03-12-2018, 05:25 AM

Quote:

Originally Posted by HEK

I have a '13 Z sports package/Touring, same as a Nismo set??...pardon my ignorance but never looked into a Nismo so I do not know the specs

Depending on if you plan to keep at or near oem tire diameter,
As speedometers are more accurate with a 27” tall tire (+ or - .2”) and the tire brand/makers sizing can easily vary a full inch in width & even be off on advertised height.
So depending on the ride height of your suspension & what tread compound you’re aiming for-can play a huge role.
Also if you desire a stretch,square or slightly bulged fitment.

jchammond · 03-12-2018, 06:07 AM

245/40,285/35 or 255/40,295/35 will be right near stock diameter & fit without scrubbing,having negative rake or making your speedometer be off.
Some of these wheel sizes handcuff you to a specific few sizes,,,unless you don’t mind front tires being taller (negative rake)....about 1/2” diameter difference is the most you want to differentiate because of on board computers.....you will get the Christmas Tree effect.

Nixin · 04-03-2018, 02:53 PM

I like the 255/40 and 305/35 set up. Not too crazy, just a bit of extra beef.

The Whit · 04-04-2018, 12:16 AM

jchammond, sorry to hear about your mishap. I hope all heals well.

johnnydrama · 04-04-2018, 08:10 AM

Quote:

Originally Posted by Nixin

I like the 255/40 and 305/35 set up. Not too crazy, just a bit of extra beef.

Agree!

03-11-2018, 02:01 PM	#1 (permalink)
URI Base Member Join Date: Nov 2017 Location: Phoenix, AZ Posts: 22 Drives: 2016 370Z Nismo Tech Rep Power: 498	P265 Front and P305 Rear After putting on 16500 mi on the Nismo with the OEM Potenza's I noticed the deteriorating tread on the rear 385/40/19 tires. I'm ready for new shoes and am wondering what will be the maximum width increase for both front and rear. Up front going from a 245 to a 265 shouldn't be a problem, there is a lot of fenderwell up there. My concern is could the rear fenders handle a jump to 305's from a 285? I'm hungry for a more aggressive stance a 305 will give, and the look of the car from behind. I know the 10" front wheels and the 10.5 inch rear Rays can fit them fine, I'm just wondering if It will be poking out on the sides? As a rule of thumb when you go up one tire size width it increases the footprint by a half inch. Measuring seems to show it should work, anyone have any experience with this? Thanks!

03-11-2018, 02:15 PM	#2 (permalink)
OTW Z-Boy A True Z Fanatic Join Date: Mar 2012 Location: Temecula Ca Posts: 1,225 Drives: 14 Nismo 370z #495 Rep Power: 750	I’ll leave this here for you... The "Will it fit?" thread Ghost116 likes this. __________________ 2014: Nismo 370z #495 Magnetic Black - Stillen Gen3 CAI \| SPL F/R Camber Arms \| HKS Hypermax IV \| JDM Rear Fog Light \|GT-R Push Start Button \| Z1 2 Piece D/S \| Illuminated Kicks \| Tommykaira \| Work VS-XX BKB Step Lip +23/+13 19" 9.5/11 \| Fast Intentions RHFC TDX CBE 12" CF \| EcuTek

03-11-2018, 08:59 PM	#4 (permalink)
danegrey A True Z Fanatic Join Date: Oct 2011 Location: Knoxville Age: 71 Posts: 3,190 Drives: 12 370Z BK Cherry M6 Rep Power: 649540	I ran 305s on the back of my Z and never had a problem with them.... and they looked great with no spacers... __________________ Lots of Changes the Z needs to be driven and driven hard for the car lives for it

03-11-2018, 10:23 PM	#8 (permalink)
OptionZero A True Z Fanatic Join Date: Apr 2011 Location: Sacramento Posts: 3,224 Drives: 15 370Z Nismo 6MT Rep Power: 214100	it's like reading the existing threads is the hardest thing in the world or using google to see what wheels you have stock . . . Spooler, jchammond and Ghost116 like this. __________________ OptionZero Build Thread

03-12-2018, 06:07 AM	#11 (permalink)
jchammond A True Z Fanatic Join Date: Nov 2014 Location: South Carolina Age: 58 Posts: 15,204 Drives: 13’ 370Z TS 7A/T Rep Power: 2684394	245/40,285/35 or 255/40,295/35 will be right near stock diameter & fit without scrubbing,having negative rake or making your speedometer be off. Some of these wheel sizes handcuff you to a specific few sizes,,,unless you don’t mind front tires being taller (negative rake)....about 1/2” diameter difference is the most you want to differentiate because of on board computers.....you will get the Christmas Tree effect. HEK, Hotrodz and Nixin like this. __________________ MazWorx built long block \| FI-TT-100 Stage 2.75 \| IPT built 7A/T http://www.the370z.com/members-370z-...s-musings.html

03-11-2018, 06:12 PM	#3 (permalink)
HEK Enthusiast Member Join Date: Apr 2009 Location: WESTFIELD, MA Age: 66 Posts: 491 Drives: '13 Z Tour Sports 6m Rep Power: 660	Bottom line what's the widest tire we can put on the Rays...and brand...I will ask Discount Tire Direct this Summer and compare..

03-11-2018, 09:12 PM	#5 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,792 Drives: 2013 Nismo 370z Rep Power: 2684392	On Nismo wheels the widest you can run is 285/35/19 front and 325/30/19 rear. 265 and 305's will fit not problem.

04-03-2018, 02:53 PM	#12 (permalink)
Nixin A True Z Fanatic Join Date: Sep 2015 Location: GWN Posts: 3,488 Drives: Goodbye Z! Rep Power: 19833	I like the 255/40 and 305/35 set up. Not too crazy, just a bit of extra beef. johnnydrama likes this.

04-04-2018, 12:16 AM	#13 (permalink)
The Whit Base Member Join Date: May 2017 Location: San Diego Posts: 28 Drives: 2016 370Z GM A7 Rep Power: 8	jchammond, sorry to hear about your mishap. I hope all heals well. jchammond likes this.

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