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

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Old 11-05-10, 01:49 AM   #1
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Default Wheel width/offset/size and tire fitment Q&A thread

It seems that every other question asked on this sub-forum is about wheel/tire fitment. If you guys have any questions, just post them in this thread. There are a lot of knowledgeable members that can answer these types of questions. That should help a lot with the clutter.
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Old 11-05-10, 07:52 AM   #2
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I suppose I'll be the first to post something here. I've asked about this in another forum and was rudely told to search and not ask repeated questions about something that's been discussed elsewhere. I searched and found nothing to answer my exact questions.
I recently put factory 18s on my 02GS3 that came off an 07 GS450h. They came with the original runflat Dunlops (HORRIBLE tires!) that have about 7k on them. Once I put these on I noticed the car looked off, way too high up off the ground with massive fender gap. So I lowered it ~1 inch on Eibachs and did struts at the same time. Do I need to make any modifications such as spacers or anything to make this work or is it ok the way I have it set up? The 2nd gen GS came with 17" options but not 18. It's only an inch but they're also much wider tires (245-40-18).
Any input would be appreciated.
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Old 11-05-10, 09:10 AM   #3
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Originally Posted by raceforgt View Post
I suppose I'll be the first to post something here. I've asked about this in another forum and was rudely told to search and not ask repeated questions about something that's been discussed elsewhere. I searched and found nothing to answer my exact questions.
I recently put factory 18s on my 02GS3 that came off an 07 GS450h. They came with the original runflat Dunlops (HORRIBLE tires!) that have about 7k on them. Once I put these on I noticed the car looked off, way too high up off the ground with massive fender gap. So I lowered it ~1 inch on Eibachs and did struts at the same time. Do I need to make any modifications such as spacers or anything to make this work or is it ok the way I have it set up? The 2nd gen GS came with 17" options but not 18. It's only an inch but they're also much wider tires (245-40-18).
Any input would be appreciated.
They way you have it is just fine.
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Old 11-05-10, 10:07 AM   #4
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Suprised you are still here and making a thread Van.
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Old 11-05-10, 06:43 PM   #5
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Thanks Infamous. I've been told I need spacers but didn't see it necessary given they're only an inch bigger and OEM wheels. They don't rub against the fenders at all even with the drop. Next step, changing the runflats with some nice Michelins to smooth out the tank-like ride!
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Old 11-05-10, 08:20 PM   #6
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Quote:
Originally Posted by raceforgt View Post
I suppose I'll be the first to post something here. I've asked about this in another forum and was rudely told to search and not ask repeated questions about something that's been discussed elsewhere. I searched and found nothing to answer my exact questions.
I recently put factory 18s on my 02GS3 that came off an 07 GS450h. They came with the original runflat Dunlops (HORRIBLE tires!) that have about 7k on them. Once I put these on I noticed the car looked off, way too high up off the ground with massive fender gap. So I lowered it ~1 inch on Eibachs and did struts at the same time. Do I need to make any modifications such as spacers or anything to make this work or is it ok the way I have it set up? The 2nd gen GS came with 17" options but not 18. It's only an inch but they're also much wider tires (245-40-18).
Any input would be appreciated.
if you want to be technical about it, you should go get an alignment to make it perfect.
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Old 11-06-10, 12:51 PM   #7
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I did an alignment of course, after all the suspension parts I put into it. Any special alignment you're referring to?
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Old 11-06-10, 07:28 PM   #8
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Quote:
Originally Posted by raceforgt View Post
Thanks Infamous. I've been told I need spacers but didn't see it necessary given they're only an inch bigger and OEM wheels. They don't rub against the fenders at all even with the drop.
You might have been told to get spacers because some members are really into getting the wheel as flushed as possible to the fender. Yes, the current setup does not rub the fenders and that is the, I think, objection.

If you are OK with how it looks, then just enjoy the car.
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Old 11-06-10, 10:14 PM   #9
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You might have been told to get spacers because some members are really into getting the wheel as flushed as possible to the fender. Yes, the current setup does not rub the fenders and that is the, I think, objection.

If you are OK with how it looks, then just enjoy the car.
Yeah Neo that's what I figured. No rubbing going on and honestly it *looks* perfect. I just didn't know if going +2 on the wheels would somehow change the geometry of the car, calling for spacers. That was the only reason I asked. I gave it a 1" drop on springs and new struts too. Any suggestions on what else I should do with this setup?
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Old 11-06-10, 10:44 PM   #10
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2GS lowered and no wheel well gap but not tucked/slammed

19x8.5 +42
19x9.5+43

will 245/40/19 and 275/35/19 be the largest tire i can fit for a FAT set up without rubbing and without rolling/shaving the fender?
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Old 11-06-10, 11:05 PM   #11
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Originally Posted by AMSMIKE View Post
2GS lowered and no wheel well gap but not tucked/slammed

19x8.5 +42
19x9.5+43

will 245/40/19 and 275/35/19 be the largest tire i can fit for a FAT set up without rubbing and without rolling/shaving the fender?
Why in the world would you want a taller front tire over the rear
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Old 11-06-10, 11:14 PM   #12
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Why in the world would you want a taller front tire over the rear

its almost identicle height. very very very slight difference which i doubt will be noticeable by the human eye.

245/40/19

sidewall 3.9"
radius 13.4"
diameter 26.7"
circumference 83.9"
revs/mile 755


275/35/19

sidewall 3.8"
radius 13.3"
diameter 26.6"
circumference 83.5"
revs/mile 759


all i am asking is if it will rub. thats it.
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Old 11-07-10, 09:12 AM   #13
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Quote:
Originally Posted by AMSMIKE View Post
its almost identicle height. very very very slight difference which i doubt will be noticeable by the human eye.

all i am asking is if it will rub. thats it.
Shouldn't rub.
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Old 11-07-10, 09:20 AM   #14
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Quote:
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Why in the world would you want a taller front tire over the rear
Shouldn't really be taller. The specs are appropriate "fat" staggered setup.
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Old 11-07-10, 09:26 AM   #15
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Quote:
Originally Posted by raceforgt View Post
Any suggestions on what else I should do with this setup?
Well, what are your goal? If you are happy with how it looks and feel, what else are you looking for?

Quote:
Originally Posted by AMSMIKE View Post
2GS lowered and no wheel well gap but not tucked/slammed

19x8.5 +42
19x9.5+43

will 245/40/19 and 275/35/19 be the largest tire i can fit for a FAT set up without rubbing and without rolling/shaving the fender?
The specs are pretty conservative so I don't think there will be any fender rub issues. Depending on the drop specs, the only rub I might see happen (because you are going with the fat setup) is the top of the fender liner on big dips.
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Old 11-07-10, 09:26 AM
 
 
 
 
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