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18" Wheel & Tire Discussion Thread

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Old Apr 7, 2013 | 06:02 PM
  #1321  
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Originally Posted by J 0 K 3 R
275/45/18/ would be 27.74" tall. and a 245/4518 is 26.68.
so yes it would work but not many tires come in that size. its also best to run the same tire front and back. (i didnt for a while and i didnt like it) it would be 'best' to get 4 new and sell the old but tires ARE pricey. i recommend bfg kdw2's as a tire but i dont think they come in that size nor do the v12's that i know of.
So why people here are saying to dont run that setup ? I have 2 246/45/18 I just need to get 2 275/45/18 but they said to dont do it
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Old Apr 7, 2013 | 06:28 PM
  #1322  
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it will probably rub. that is a big tire. it like running a 275 on a 20" wheel. may not look very good and will raise the car, giving it the monster truck Z look on stock suspension. i run a ~25.3" tire up front and a ~26" in rear. so running 1.75" taller is not that desirable.
a 285/40/18 will work. its .3" taller than a 245/45/18 and might be your best option for a wide tire.

Last edited by J 0 K 3 R; Apr 7, 2013 at 06:34 PM.
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Old Apr 7, 2013 | 06:34 PM
  #1323  
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Originally Posted by J 0 K 3 R
it will probably rub. that is a big tire. it like running a 275 on a 20" wheel. may not look very good and will raise the car, giving it the monster truck Z look on stock suspension. i run a ~25.3" tire up front and a ~26" in rear. so running 1.75" taller is not that desirable.
But my new wheels will be 18x10.5 in the rear I need a 275 to fit.

Or what about if I do 245/35/18 and 275/35/18
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Old Apr 7, 2013 | 06:45 PM
  #1324  
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Here are some of the more popular wheel and tire sizes (for good reason) that people put on their Z's. There is no "RIGHT" answer but there is a limit to how big or small you can go.

18" combination:
Front 18" x 8.5" , Offset +15 to +25, Tires 245/40/18
Rear 18" x 9.5" , Offset +15 to +25, Tires 275/40/18
(lower offset such as +10 in rear is possible but may require rolling)

Front 18" x 9.5" , Offset +25 to +30, Tires 255/40/18
Rear 18" x 10.5" , Offset +28 to +35, Tires 285/40/18 or 295/35/18
(lower offset such as +23 in the rear is possible but may require rolling)
It may pay for you to look at the 18" wheel discussion thread and look through to find tire sizes that fit your application
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Old Apr 7, 2013 | 07:34 PM
  #1325  
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Originally Posted by Jorge Rodriguez
But my new wheels will be 18x10.5 in the rear I need a 275 to fit.

Or what about if I do 245/35/18 and 275/35/18
dude c'mon. im not bustin yer *****, but seriously!
NO you do not need a 275 exactly for a 10.5" wheel. im doing a 295 on a 10" wheel. and ive done 265 on a 8" wheel. hell i have 35"x 12.5"(317mm)on a 7" wheel.
so you can use a 265-295 on your 10.5" wide wheel. you decide.

if you DO get 4 new tires. for an 18x9 you should do from a 255-275. ideal setup for you should be like 255/265 front and 275/295 rear. that is what i would do.

Last edited by J 0 K 3 R; Apr 7, 2013 at 07:39 PM.
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Old Apr 7, 2013 | 09:37 PM
  #1326  
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Originally Posted by Jorge Rodriguez
But my new wheels will be 18x10.5 in the rear I need a 275 to fit.

Or what about if I do 245/35/18 and 275/35/18
Yup, minimum of 275/40 rear. You can always do a 295/35 rear with a 275/35 front.
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Old Apr 8, 2013 | 04:51 AM
  #1327  
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Originally Posted by terrasmak
Yup, minimum of 275/40 rear. You can always do a 295/35 rear with a 275/35 front.
Thanks man, I take your advice and go with 245-255/40/18 and 275-285/40/18.

And do you know if I would need to roll my fenders ? Again I'll be getting 18x9 +25 front and 18x10.5 +20 rear, and I want to lower it a bit on coils so I can get rid of the gap not crazy low just a bit
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Old Apr 8, 2013 | 06:42 AM
  #1328  
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I got 18x9.75 all around and I'm running 265/35/18's all around and they fit fine in the front on stock height.
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Old Apr 8, 2013 | 07:29 AM
  #1329  
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Originally Posted by andre12031948
Getting what you like is for sure the thing to do

Good luck
I said screw the replicas and drove 30 hours to pick up some silver lmgt4's Im way more pleased with them
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Old Apr 8, 2013 | 07:36 AM
  #1330  
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30 hours for some wheels?!

f%#k that
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Old Apr 8, 2013 | 07:52 AM
  #1331  
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Originally Posted by Jorge Rodriguez
Thanks man, I take your advice and go with 245-255/40/18 and 275-285/40/18.

And do you know if I would need to roll my fenders ? Again I'll be getting 18x9 +25 front and 18x10.5 +20 rear, and I want to lower it a bit on coils so I can get rid of the gap not crazy low just a bit
You will probably need a roll , mine started to rub (at stock height) with 10.5 +25 running a 275/40-18 out back. With a roll and lowered i ran 10.5 +10 with a 275/40-18 for a long time, and currently run a 285/35 out back.
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Old Apr 17, 2013 | 06:14 AM
  #1332  
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Default 18x11 rim question !!!

hey guys i just picked up 4 18x11 rims im not sure the offsets. my question is can i fit a 275 40 18 in the front of my 2008 350z with a 10mm spacer without it sticking out to much ? thank you guys!!
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Old Apr 17, 2013 | 06:51 AM
  #1333  
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You will need a lot of camber and will still rub, the tire is way to tall. 275/35 would be a better choice.
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Old Apr 17, 2013 | 07:10 AM
  #1334  
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your thinking maybe a 265 35 would rub?
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Old Apr 17, 2013 | 07:13 AM
  #1335  
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Originally Posted by 50trim
your thinking maybe a 265 35 would rub?
maybe , maybe not, they wheel is going to stick out a lot. Would help if you posted full wheel specs.
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Old Apr 17, 2013 | 07:47 AM
  #1336  
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if i roll my fenders you think it would look rediculous? lol
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Old Apr 17, 2013 | 08:02 AM
  #1337  
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without knowing the offsets, well, no one knows your offset.
Hence the thread question is invalid.
We cant tell you where it will sit w out knowing the offset
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Old Apr 17, 2013 | 08:10 AM
  #1338  
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any way i can find out off sets by looking atwheels because idk if guy that i got them from knows :/ u guys think its worth putting them on without knowing offset?
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Old Apr 17, 2013 | 08:25 AM
  #1339  
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....You sir, have a lot to learn.
Search.
https://my350z.com/forum/7149697-post15.html
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Old Apr 17, 2013 | 08:47 AM
  #1340  
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ok i just talked to the guy he said there 18x10 20 offset i guess i measured the rims wrong lol i measured lip to lip and someone told me i measured them wrong
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