GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Wheel width/offset/size and tire fitment Q&A thread

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Old 09-23-18, 07:23 AM
  #946  
daj430
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Originally Posted by robxrt




about a month late, sorry but new to this lol. i'm running 18x11+10 squared so basically the same, minus diameter. the rears are pulled & shaved to the max. fronts fit just fine
if I'm not mistaken I believe that's what mines going to look like just got a quote to do 19×9.5+14/19×10.5+6 (3.5 lip) (4.5 lip) correct?
Old 09-23-18, 09:51 AM
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firelizard
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Yours will not look like that because you have completely different sizes.
Old 09-24-18, 09:23 AM
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Originally Posted by firelizard
Yours will not look like that because you have completely different sizes.
ah ok wouldn't it be close being you are running a 11 with a +10 to which I'll be running a 10.5 +6 I figured it would have the similar poke out in the rear.
Old 09-24-18, 09:57 AM
  #949  
SpectraBlu
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Originally Posted by daj430
ah ok wouldn't it be close being you are running a 11 with a +10 to which I'll be running a 10.5 +6 I figured it would have the similar poke out in the rear.
You're right, it's only a 2.3mm difference.
https://www.willtheyfit.com/index.ph...10-5&offset2=6
Old 09-24-18, 07:12 PM
  #950  
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Correct, the rear is similar in width and offset. The front is not; also there is an inch difference of diameter and the different widths will change the size and fit of the tires.
Old 10-20-18, 07:18 AM
  #951  
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Need help on tire size going for moderate stretch, wheel size are 19×9.5 +14/19×10 +13 steplip static ride..
Old 10-20-18, 08:22 AM
  #952  
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Originally Posted by daj430
Need help on tire size going for moderate stretch, wheel size are 19×9.5 +14/19×10 +13 steplip static ride..
You came to the right thread.
Old 02-03-19, 05:35 PM
  #953  
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i just picked up a 00 gs300. stock everything. snagged a set of 18x8 +45, and 18x8.5 +50 wheels. will be lowered on BC coilovers next month and wanted to know whats my ideal tire size. the common websites like willtheyfit, and wheelsize dont really have an accurate view imo of whats capable of being fit on here. i dont plan on being super slammed. been there on past projects. not to thrilled to do that again. most likely lower just enough to kill the wheel gap.

was thinking 245/40/18 up front and 255/40/18 out back. is this too anemic? i know the wheels are not super wide so i cant fit some beastly setup but i still want to maximize what i have. thanks in advance.

yes i did search and will continue my search as i await a response from someone with more knowledge on the subject
Old 02-03-19, 11:23 PM
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Oookay I messed up. Bad. From what I'm understanding, I'm gonna need like 30mm spacers or larger to drop the numbers on these wheels and bring them way out. Is that gonna nuke my wheel bearings?

These are the wheels I bought.

Old 02-04-19, 09:17 AM
  #955  
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What is your objective?

If you did search, you know that you have a stock-ish wheel size and that the recommended tire size is 235/40-18 or 245/40-18.

​​​​You've also seen dozens upon dozens of posts where people ran much lower offsets with no mention of nuked wheel bearings.

Sounds like you have everything you need.
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Old 02-04-19, 11:36 AM
  #956  
8M6
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Originally Posted by Aeok18109
Oookay I messed up. Bad. From what I'm understanding, I'm gonna need like 30mm spacers or larger to drop the numbers on these wheels and bring them way out. Is that gonna nuke my wheel bearings?
How the heck did you come to that conclusion and what math did you do to support that?

Hint: You're fine.
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Old 02-04-19, 07:01 PM
  #957  
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Originally Posted by Aeok18109
i just picked up a 00 gs300. stock everything. snagged a set of 18x8 +45, and 18x8.5 +50 wheels. will be lowered on BC coilovers next month and wanted to know whats my ideal tire size. the common websites like willtheyfit, and wheelsize dont really have an accurate view imo of whats capable of being fit on here. i dont plan on being super slammed. been there on past projects. not to thrilled to do that again. most likely lower just enough to kill the wheel gap.

was thinking 245/40/18 up front and 255/40/18 out back. is this too anemic? i know the wheels are not super wide so i cant fit some beastly setup but i still want to maximize what i have. thanks in advance.

yes i did search and will continue my search as i await a response from someone with more knowledge on the subject
245/40/18 front, either 265/35/18 0r 275/30/18
Old 02-04-19, 08:31 PM
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Originally Posted by 8M6
How the heck did you come to that conclusion and what math did you do to support that?

Hint: You're fine.
front 18x8 +45
rear 18x8.5 +50
I figured since the rear wheel has a +50 its gonna be buried in the car.if i add a 30mm spacer , wouldnt that push it towards the fender and make it a +20? or am i doing it wrong? ill get a chance to work it this weekend finally to see what needs to be done
Originally Posted by silverbul
245/40/18 front, either 265/35/18 0r 275/30/18
wouldnt it be higher in the front with a 40 compared to the rear 35?

please bear with me. ive never had decent wheels. these will be temp wheels with spacers that will later fund a 3 piece setup after ive lowered and done body work

thank you all for taking the time to respond and not roast my *** into oblivion.
Old 02-04-19, 08:35 PM
  #959  
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Just FYI, the recommended rim width for a 265/35 is usually at least 9". 275/30 does not appear to be a readily available tire size, from any manufacturer, but it would also be recommended to use a minimum 9" wheel for a 275 tire.

If you're actually saving up for other things, just throw on a 235/40 in the front, a 245/40 in the rear and call it a day. Both sizes are within recommended spec, and affordable.
Old 02-04-19, 08:38 PM
  #960  
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Aeok18109, although you're good, I'll help you out with a bit more detail.

OEM 17" GS wheel
17x8", 50mm offset
9" measured rim width
4.5" centerline
6.47" backspacing

New front wheel
18x8", 45mm offset
9" measured rim width
4.5" centerline
6.27" backspacing
0.2" increased clearance between front spindle and vertical plane of inner rim edge
0.2" decreased differential between front fender and vertical plane of outer rim edge

New rear wheel
18x8.5", 50mm offset
9.5" measured rim width
4.75" centerline
6.72" backspacing
0.25" decreased clearance between rear spindle and vertical plane of inner rim edge
0.25" decreased differential between rear fender and vertical plane of outer rim edge

In short, you don't need spacers because all the dimensions are so close to the stock wheels. The stock wheel offset is 50mm, but I think you may have been thinking it was drastically different.

If you want to stay within tire manufacturer recommended specs and properly match the OEM tire diameter, you should go 245/40/18 all around, which is kind of aggravating when you have staggered wheels. When I was making my decision on new wheels, I went with four 18x8.5" 45mm rears instead of doing a pointless 0.5" stagger that doesn't allow for significantly different tire sizes, and so I could keep the ability to do a front-rear rotation.

Last edited by 8M6; 02-04-19 at 09:13 PM.


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