Question on 20's and sidewall

iCraigerz · 06-28-2014, 10:28 AM

Hey guys,

I want to apologize in advance for not using the search button but as it stands right now I'm balls deep in setting up this saltwater tank. My question is for anyone running 20's. What was the biggest sidewall you were able to go with?

I'd love to go with 305/30/20 for the rear and 275/30/20 in the front?

Is this just wishful thinking?

Craig

MadChemist · 06-28-2014, 01:40 PM

It all depends. Are you dropped?

Check this link:
20" and H&R Springs

iCraigerz · 06-28-2014, 06:43 PM

Thanks man. Ideally I'd really like to go 35's. I'm not dropped, yet, but my springs will cater to my wheel/tire specs.

Sent from my iPhone using Tapatalk.

shurik355 · 06-29-2014, 02:31 PM

Good thread! i was going to start one as well, but then saw this one. Im currently running 9.5 front and 11" in the rear. Running 245/35/20 front and 285/30/20s tires in the back. After 285 tires installation in the rear I realized that I should have gone with 295 instead.

If I decide to go with 295 in the rear should I keep the side wall of 30 or go down in 25 ??? Not sure when we need to switch to side wall size when going with wider and wider tires to keep the diameter as close as possible.

Any imput?

cooltoy · 06-29-2014, 03:38 PM

What was about 285 that did not suit you? Are you lowered? I think offsets of the wheels dictate tire width choice as well.

shurik355 · 06-29-2014, 10:27 PM

What? How are the offsets effect the tires fitment? It's all about the rim width. I really doubt that offsets can effect the tires in any way.
Well Seems like with my 285 in the rear they are a bit too stretched. The stretch does not really needed, it clearly clears my quarters. That's why I said I think 295s would have worked perfectly.
And Im pretty low, lowered about 2" on coilovers.

Quote:

Originally Posted by cooltoy

What was about 285 that did not suit you? Are you lowered? I think offsets of the wheels dictate tire width choice as well.

cooltoy · 06-30-2014, 11:47 AM

Quote:

Originally Posted by shurik355

What? How are the offsets effect the tires fitment? It's all about the rim width. I really doubt that offsets can effect the tires in any way.
Well Seems like with my 285 in the rear they are a bit too stretched. The stretch does not really needed, it clearly clears my quarters. That's why I said I think 295s would have worked perfectly.
And Im pretty low, lowered about 2" on coilovers.

You are correct. the offsets will have no effect on the how the tire sits on the rim. However, they will affect on how far the whole package sticks out past the fender, and if you have a low offset, you might have to go with a narrower tyre.

But you already know that I am sure.

If you can fit it, go wider.

370Z JT · 06-29-2014, 03:45 PM

My next set will be 255/35 front, and 285/30 rear. I was on 255/30 Front and 295/25 rear and they were too thin.

Radride · 06-30-2014, 11:36 AM

My suggestion is to keep the original OEM OD (outside diameter) of the tire. I see a lot of guys going with a shorter tire than stock and it looks terrible and drives like crap. Having said that, it appears majority of that is seen on cars that have too much poke and run super stretched tires.

R.K.

Rid3_FaM0uS · 06-30-2014, 12:57 PM

OP to answer your original question I believe I am the only person who has dabbled with the largest tires to fit factory wells on a 20" rim here are some pictures of my car as it sits today on ZERO alterations to the factory suspension

the car currently sits on 275/40/20 NT-05 fronts and 315-35-20 NT-05R drag radials on the rear. this is probably the ABSOLUTE biggest you can run in our wheel wells. I'm actually currently awaiting coils so I can tighten down the dampening to keep the car from squatting and bottoming into the fenders. There's not even a fingers width of room tire-fender on all four corners.

Radride · 06-30-2014, 01:26 PM

Quote:

Originally Posted by Radride

My suggestion is to keep the original OEM OD (outside diameter) of the tire. I see a lot of guys going with a shorter tire than stock and it looks terrible and drives like crap. Having said that, it appears majority of that is seen on cars that have too much poke and run super stretched tires.

R.K.

Quote:

Originally Posted by Rid3_FaM0uS

OP to answer your original question I believe I am the only person who has dabbled with the largest tires to fit factory wells on a 20" rim here are some pictures of my car as it sits today on ZERO alterations to the factory suspension

the car currently sits on 275/40/20 NT-05 fronts and 315-35-20 NT-05R drag radials on the rear. this is probably the ABSOLUTE biggest you can run in our wheel wells. I'm actually currently awaiting coils so I can tighten down the dampening to keep the car from squatting and bottoming into the fenders. There's not even a fingers width of room tire-fender on all four corners.

I stand corrected. Here's a perfect example of wrong offsets and the tires being too tall...The factory tires in the front are 26.8" tall and the rear's are 26.5" tall. The car above's tires are 28.7" tall!!!!!!!!!!!!!!!!!! That's 2" taller than factory. It makes the car look like its riding on balloons. The rears are again 28.7" tall. Same problem as the front. Do not repeat his mistake.

Here's pictures of proper fitting wide wheels and proper offsets:

That's my car. I'm running 265's on the front and 325's on the rear; lowered on Swift springs. That's how its done.

R.K.

Rid3_FaM0uS · 06-30-2014, 01:53 PM

Quote:

Originally Posted by Radride

I stand corrected. Here's a perfect example of wrong offsets and the tires being too tall...The factory tires in the front are 26.8" tall and the rear's are 26.5" tall. The car above's tires are 28.7" tall!!!!!!!!!!!!!!!!!! That's 2" taller than factory. It makes the car look like its riding on balloons. The rears are again 28.7" tall. Same problem as the front. Do not repeat his mistake.

Here's pictures of proper fitting wide wheels and proper offsets:

That's my car. I'm running 265's on the front and 325's on the rear; lowered on Swift springs. That's how its done.

R.K.

the OP asked a question I answered. where your car is meant to look good and move slow; my car is meant to look good and move fast. to each their own rad.

cooltoy · 06-30-2014, 01:45 PM

Quote:

Originally Posted by Rid3_FaM0uS

OP to answer your original question I believe I am the only person who has dabbled with the largest tires to fit factory wells on a 20" rim here are some pictures of my car as it sits today on ZERO alterations to the factory suspension

the car currently sits on 275/40/20 NT-05 fronts and 315-35-20 NT-05R drag radials on the rear. this is probably the ABSOLUTE biggest you can run in our wheel wells. I'm actually currently awaiting coils so I can tighten down the dampening to keep the car from squatting and bottoming into the fenders. There's not even a fingers width of room tire-fender on all four corners.

Wow!!!! Tire augmentation surgery.

cooltoy · 06-30-2014, 02:04 PM

So getting wheels like that will make me faster? Or is there more involved?

Rid3_FaM0uS · 06-30-2014, 02:06 PM

these wheels are set up for my car to be putting 800whp down to the street. is that the answer you were looking for or did I miss something?

06-28-2014, 10:28 AM	#1 (permalink)
iCraigerz Base Member Join Date: Jun 2014 Location: Prescott, AZ Posts: 37 Drives: 13' 370Z Nismo Rep Power: 11	Question on 20's and sidewall Hey guys, I want to apologize in advance for not using the search button but as it stands right now I'm balls deep in setting up this saltwater tank. My question is for anyone running 20's. What was the biggest sidewall you were able to go with? I'd love to go with 305/30/20 for the rear and 275/30/20 in the front? Is this just wishful thinking? Craig

06-29-2014, 03:45 PM	#8 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 378	My next set will be 255/35 front, and 285/30 rear. I was on 255/30 Front and 295/25 rear and they were too thin. __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal Last edited by 370Z JT; 06-29-2014 at 11:00 PM.

06-30-2014, 12:57 PM	#10 (permalink)
Rid3_FaM0uS Track Member Join Date: Apr 2012 Location: Wapakoneta, Ohio Posts: 506 Drives: 2011 BS Nismo 370z Rep Power: 44	OP to answer your original question I believe I am the only person who has dabbled with the largest tires to fit factory wells on a 20" rim here are some pictures of my car as it sits today on ZERO alterations to the factory suspension the car currently sits on 275/40/20 NT-05 fronts and 315-35-20 NT-05R drag radials on the rear. this is probably the ABSOLUTE biggest you can run in our wheel wells. I'm actually currently awaiting coils so I can tighten down the dampening to keep the car from squatting and bottoming into the fenders. There's not even a fingers width of room tire-fender on all four corners. __________________ Always under construction. . .

06-30-2014, 02:04 PM	#14 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 13,951 Drives: 14 PW 370Z S/T MT Rep Power: 243721	So getting wheels like that will make me faster? Or is there more involved? falconfixer likes this.

06-30-2014, 02:06 PM	#15 (permalink)
Rid3_FaM0uS Track Member Join Date: Apr 2012 Location: Wapakoneta, Ohio Posts: 506 Drives: 2011 BS Nismo 370z Rep Power: 44	these wheels are set up for my car to be putting 800whp down to the street. is that the answer you were looking for or did I miss something? __________________ Always under construction. . .

06-28-2014, 01:40 PM	#2 (permalink)
MadChemist Enthusiast Member Join Date: Sep 2012 Location: Florida Posts: 412 Drives: 2010 370ZR Rep Power: 12	It all depends. Are you dropped? Check this link: 20" and H&R Springs

06-28-2014, 06:43 PM	#3 (permalink)
iCraigerz Base Member Join Date: Jun 2014 Location: Prescott, AZ Posts: 37 Drives: 13' 370Z Nismo Rep Power: 11	Thanks man. Ideally I'd really like to go 35's. I'm not dropped, yet, but my springs will cater to my wheel/tire specs. Sent from my iPhone using Tapatalk.

06-29-2014, 02:31 PM	#4 (permalink)
shurik355 Enthusiast Member Join Date: May 2012 Location: Tulsa, OK Posts: 352 Drives: 370z 40th anniversar Rep Power: 13	Good thread! i was going to start one as well, but then saw this one. Im currently running 9.5 front and 11" in the rear. Running 245/35/20 front and 285/30/20s tires in the back. After 285 tires installation in the rear I realized that I should have gone with 295 instead. If I decide to go with 295 in the rear should I keep the side wall of 30 or go down in 25 ??? Not sure when we need to switch to side wall size when going with wider and wider tires to keep the diameter as close as possible. Any imput?

06-29-2014, 03:38 PM	#5 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 13,951 Drives: 14 PW 370Z S/T MT Rep Power: 243721	What was about 285 that did not suit you? Are you lowered? I think offsets of the wheels dictate tire width choice as well.

06-30-2014, 11:36 AM	#9 (permalink)
Radride Base Member Join Date: Feb 2014 Location: Canada Posts: 162 Drives: Ram Rep Power: 11	My suggestion is to keep the original OEM OD (outside diameter) of the tire. I see a lot of guys going with a shorter tire than stock and it looks terrible and drives like crap. Having said that, it appears majority of that is seen on cars that have too much poke and run super stretched tires. R.K.

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