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Correct Tire sizing when changing wheels...

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Old Jan 1, 2005 | 09:17 AM
  #101  
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Originally posted by Z BOY
Okay all you wheel/tire experts, after reading all 5 pages of this thread, i've learned a whole lot and changed my mind prolly 3x about my next setup. This is what i'm liking so far: the Volk GT-N wheel, 18x9x4. This wheel doesn't come in half sizes. I'm looking for a good combination of straight-line grip plus vaccuuming up those corners, if this combo is possible. What do you think of 9" width all around, and what tire-size combo would you recommend to help me both in the corners and on straightaways?
The only thing i'm still totally clueless on is what offset i should be looking for with this setup. Is offset adjustable? Is it something i request from the wheel vendor? Is lip width adjustable with this two-piece wheel? What should i be looking for re lip width?
ps: i entered the first '05 post on this thread! Here's wishing all your z/gs all the best in '05!
Lil help?
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Old Jan 1, 2005 | 07:46 PM
  #102  
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Default Re: Re: Re: Correct Tire sizing when changing wheels...

Originally posted by Z BOY
I see your point. The stock stagger is .71". The stagger with 255/40/18 and 275/40/18 is .62". That btwn 245/40/18 and 275/40/18 is .94", which is greater than stock stagger and would increase understeer, right?
Yeah, that's my take on it. That's why I'm going to a 255/275 combo on my next set of tires.
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Old Jan 2, 2005 | 01:13 AM
  #103  
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Default Re: Re: Re: Re: Correct Tire sizing when changing wheels...

Originally posted by jreiter
Yeah, that's my take on it. That's why I'm going to a 255/275 combo on my next set of tires.
i was thinking the same thing; has anyone else run this setup with success? didn't scc run less of a stagger in their "balance" installment of project 350z? i know for sure they ran 255/35/18s in front, but not sure about the back... think it was 265.
Correction: it was freakin 275/40/18 all around!

Last edited by Z BOY; Jan 2, 2005 at 01:36 AM.
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Old Jan 3, 2005 | 01:25 AM
  #104  
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Originally posted by Z BOY
This is what i'm liking so far: the Volk GT-N wheel, 18x9 all around. This wheel doesn't come in half sizes. I'm looking for a good combination of straight-line grip plus vaccuuming up those corners, if this combo is possible.

The only thing i'm still totally clueless on is what offsets i should be looking for with this setup. Is offset adjustable? Is it something i request from the wheel vendor? Is lip width adjustable with this two-piece wheel? What should i be looking for re lip width?
What do you guys think of this size wheels running 255/40/18 in front and 275/40/18 in back?
Could someone please respond to the above questions re: offsets and lip width?
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Old Jan 3, 2005 | 01:28 AM
  #105  
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This is the wheel i want:
Attached Thumbnails Correct Tire sizing when changing wheels...-wheel-i-want.jpg  
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Old Jan 3, 2005 | 07:52 AM
  #106  
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What ever works. there is a site that calculate the tire size at first page of this tread. it is in www.tires.com that you will find it. I am running on 2454018 & 2754018. They are awesome. I might get 2554018 2854018 next time just to raise the height a bit, I lowered the car 1", it might be a little too much. a taller tire size would bring it taller a little bit.
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Old Jan 3, 2005 | 08:22 AM
  #107  
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I just bent a stock wheel, 18". Any sugestions on avoiding the dealers option of their chrome wheels, $1100 w/ exchange? I'm looking at the tire /wheel pkgs. from discount direct.
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Old Jan 3, 2005 | 09:19 AM
  #108  
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Originally posted by scott west
I just bent a stock wheel, 18". Any sugestions on avoiding the dealers option of their chrome wheels, $1100 w/ exchange? I'm looking at the tire /wheel pkgs. from discount direct.
I would buy a new set, or just fix your wheels. Nismo wheels are very nice

You can still use the tires it comes with until it is worn out. although you will be pulling these 245 pretty hard on 9.5 inche rims
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Old Jan 3, 2005 | 12:35 PM
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Thanks,
I'm thinking about doing a chrome set and I see a lot of people with volk wheels. But I'm looking for advice on 18'' versus 19''. And tire size choices?
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Old Jan 3, 2005 | 12:57 PM
  #110  
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Originally posted by scott west
Thanks,
I'm thinking about doing a chrome set and I see a lot of people with volk wheels. But I'm looking for advice on 18'' versus 19''. And tire size choices?
Use Nismo, 19" are out. Of course you can use 18" too. 19" are too pricy. They really look right
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Old Jan 3, 2005 | 03:20 PM
  #111  
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Originally posted by jchen1020
What ever works. there is a site that calculate the tire size at first page of this tread. it is in www.tires.com that you will find it. I am running on 2454018 & 2754018. They are awesome. I might get 2554018 2854018 next time just to raise the height a bit, I lowered the car 1", it might be a little too much. a taller tire size would bring it taller a little bit.
"Whatever works"? Well, I don't know what works, which is why i'm asking the question.
In my communications with Bryan from 350zonline and Tony from performance nissan, they BOTH recommend not running the same size wheel on front and back, saying it would look "funny".
When i asked Bryan what the offset would be for 18x9 volk gtn wheels all around, he said 22 front, 17 rear.
I thought i had found the perfect stagger with these wheels and 2554018 front with 2754018 rear, but now i'm just as confused as before.
PLEASE HELP!
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Old Jan 3, 2005 | 07:43 PM
  #112  
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I am looking at the Enkei PK6. Can I put 18x9.5 all around? There seems to be a disagreement between Tire Shops I've talked to as to whether 9.5's will fit the front without rubbing. My Z is not lowered, nor will it ever be. What is the recommended rubber combo for this set up? Thanks for any help.

aaron
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Old Jan 4, 2005 | 09:24 AM
  #113  
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<"they BOTH recommend not running the same size wheel on front and back, saying it would look "funny".>

Someone please explain this to me! Why does it look funny, when the stock wheels are the same size back and front to begin with? Stock doesn't look funny. Am I missing something here?
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Old Jan 4, 2005 | 11:59 AM
  #114  
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i decided to go with the wider rears as recommended by the wheel vendors...problem solved.
apr01: seems like the width of your fronts MAY cause rubbing; maybe some installers have had problems with that width but others haven't...do you want to take the risk?
If you want rims with different offsets from stock, they may look "funny". I think this is a situation in which we know-nothings must follow with blind faith the advice of those with more experience. I slept lots better last nite after coming to that conclusion.
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Old Jan 4, 2005 | 09:47 PM
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Originally posted by apr01

Someone please explain this to me! Why does it look funny, when the stock wheels are the same size back and front to begin with? Stock doesn't look funny. Am I missing something here?
Even though the stock rims are the same width, the tires aren't. Stock tires are 225 front with either a 235 or 245 rear (depending on which model car you get). I personally don't think the SCC car looks funny with its 275 tires all the way around. It looks mean. I want to see someone put the rear Nismo rims on all 4 corners. I think that'd look seriously mean. I keep meaning to try mine to see if they'll fit on the front, but I keep not getting around to it.
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Old Jan 4, 2005 | 11:08 PM
  #116  
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I believe they had to modify the mounting surface to get the 275s to fit in front of the scc project z car.
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Old Jan 8, 2005 | 04:11 PM
  #117  
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I doubt i'll get any straight answers but it's worth the "stretch"


Do you guys think I could fit a 255/35/19 on a 9.5 SF Challenge wheel in front without rubbing when steering?

Offset is about +23. Lowering with Tein S-tech.
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Old Jan 13, 2005 | 07:28 PM
  #118  
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Originally posted by jchen1020
Why won't you go wider on rears?

Make it right

255-35-19 w/ 19 x 9 & 285-35-19 w/ 19 x 10.5
How would a 245-35-19 w/ 19x9 & 285-35-19 w/ 19x10 be?

Question answered. All I had to do was read the very first post.

Last edited by bdoane3941; Jan 13, 2005 at 07:37 PM.
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Old Jan 13, 2005 | 09:33 PM
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Originally posted by bdoane3941
How would a 245-35-19 w/ 19x9 & 285-35-19 w/ 19x10 be?

Question answered. All I had to do was read the very first post.
Go on to tires.com

There is a way to calculate the tire size. I do believe 255/35/19 and 285/35/19 is better deal! Better in terms of matching the original height
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Old Jan 22, 2005 | 06:01 PM
  #120  
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Originally posted by Z BOY
I thought i had found the perfect stagger with these wheels and 2554018 front with 2754018 rear, but now i'm just as confused as before.
PLEASE HELP!
I've been wondering the same thing - why not use the 255's up front instead of the 245's. I think I may have found the answer - if you search by size on TireRack or DiscountTireDirect the number of tires available in 255/40/18 is pretty slim compared to the 245/40/18.

Since the 245/40/18 is outside the stagger range of 0.5 to 0.75 you would think that a lot of people would have VDC problems but I don't see that reported here. I'm so confused!!!!!
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