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04-16-2007, 12:22 AM | #37 | |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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Quote:
since the tire is 225 mm wide (8.9in) wich is wider than either wheel the tire is going to sit in the same position regaurdless... you need to figure out TIRE clearance, not wheel clearance in this case and that is what I did with the +38 offset
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04-16-2007, 12:52 AM | #38 | |
Break'em off some.
Drives: 07 Yaris LB, 04 Cobra Join Date: Jan 2007
Location: So Cal, OC
Posts: 854
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Quote:
The +38 is a fixed number. That means 38 MM from the center of the width wheel to the mounting pad. That distance has to stay the same, regardless of rim width, but the width still grows. Because the offset is favored to one side of the wheel (not 0 offset), one side protrudes furthur than the other as width grows. That is why the wider wheel you go the less offset you have, because you have to account and compensate for uneven growth on both sides of the wheel centerline. |
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04-16-2007, 01:08 AM | #39 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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I am saying in this one case, only...
maybe if I start from where I started from you will understand my logic I wanted to cram the widest tire I could and keep as close to the stock rolling diameter as possible... I came up with the 225/50R15 Then I started from there doing my measuring, checking clearance with stocks. At the time all I could get my hands on with a +38 offset was a 7in wheel so that is what I got. But as I said before, since all my math is to compensate for the tire rather than the width of the wheel that is how I arived with my +38, and how it works the same with a 7 and 8 inch wheel.
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04-16-2007, 09:06 AM | #40 | |
Modification Condoner.
Drives: 2007 Black Sand Liftback Join Date: Jan 2007
Location: Chicago, IL
Posts: 360
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Quote:
I'm quoting myself again....well, because I'm right. Think about it. You cannot, I repeat CANNOT have a wider wheel with the same offset as a smaller wheel sit in the same place in the wheel well. Why have offsets at all then? So a 15x5 ET 38 would sit in the same place as said 15x8 ET 38? That's what your reasoning suggests.
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04-16-2007, 09:36 AM | #41 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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Nimble, I'm sorry, but please re-read my post, look especially at the first picture, and visualize the relationship between the offset and the outside of the tires as the rim's width changes.
I wish I was any good at Flash or 3D graphics to make a demonstration, but I'm not
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
04-16-2007, 10:42 AM | #42 | ||
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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Quote:
Quote:
<---aka the "tire condom"
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04-16-2007, 10:49 AM | #43 |
Modification Condoner.
Drives: 2007 Black Sand Liftback Join Date: Jan 2007
Location: Chicago, IL
Posts: 360
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Well no one gives a crap where the TIRE is because it will be too far inside the wheel on any wheel that's one inch larger than the wheel said tire was meant for. Who cares if the tire fits the wheel that's wider, if said wheel is too close to the shock/strut now? You cannot just look at one without the other.
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04-16-2007, 11:00 AM | #44 | |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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Quote:
15x7 +38 225/50R15 tire now you are saying who gives a crap about the tire... if I would not have "gave a crap" I would have gone with +42 or +45 with that 7 in wide wheel when doing my math skip to an 8 in wheel also doing the math I would have came up with the same offsets lets say I put said tire on from above with the higher offset, and get all pissed off because I am rubbing my tire like crazy on my strut, yeah I am going to be pissed a 225/50VR15 has a tread width of 8.9 inches therefor why my math was for the width of the tire not the wheel, I know I have explaned this a few times... Are you just trying to get in an Agrument with us Nimble?
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04-16-2007, 11:46 AM | #45 |
Modification Condoner.
Drives: 2007 Black Sand Liftback Join Date: Jan 2007
Location: Chicago, IL
Posts: 360
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your argument makes no sense. not to metion your yaris isn't lowered, so that means little to us with lowered cars. All I was saying was who cares about the tire size? I'm talking about what the wheel does, does not do when increasing the width. And yes, your 225 tire WILL sit in a different spot with a 15x7 vs 15x8 both ET38. Not a big difference, but a difference nonetheless.
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04-16-2007, 01:02 PM | #46 |
El Huevo
Drives: 2007 Liftback Join Date: Aug 2006
Location: CEN*CAL
Posts: 959
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Alright fellas I am still going for 15x8, the main reason i am going with 15x8 wheels, just like the look. These wheels will not be my everyday wheel. This is going to be a lot more difficult then i thought, but you guys made one thing clear its going to take some money and a lot of work to get this done, I guess i have to go with a company that can accomodate what i need, but i will definitely have to save up for the work wheels, instead of the axxis Oldskools. this topic is still open for discussion, believe me i am reading every post and taking in the info. This is all good stuff It will definitely help me in my journey for the look i am going for.
15x8 on a yaris THAT IS BADAZZ, at least in my mind :) |
04-17-2007, 01:39 AM | #47 |
16x8 +25 front
16x8 +15 rear 195/45/16 tires no rubbing done I have the same wheels in 15x8, let me know if you want. |
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04-17-2007, 01:51 AM | #48 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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streeeeeeeeetch! looks pretty awesome though!
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
04-17-2007, 01:54 AM | #49 |
Banned
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04-17-2007, 01:57 AM | #50 |
Lurker supreme!
Drives: old and boosted! Join Date: Nov 2006
Location: Ottawa, ON, Canada
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And 195mm = 7.68"! So the wheel is actually wider than the tire! Is that allowed?? Or possible? I guess so!
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04-17-2007, 02:02 AM | #51 |
04-17-2007, 02:02 AM | #52 |
vroom vroom
Drives: lil red 5-door Join Date: Sep 2006
Location: Bangkok, Thailand
Posts: 7,744
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sure is, it gives a stretched look to the wheel.. Look at the closeup of my wheel I posted in the previous page, kinda like that, but in that case, probably even more stetched!
It's a matter of taste, I will go for wider tires when I change them, this leaves the edge of my rims far too exposed, already have a few scratches on them
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The price of freedom of religion, or of speech, or of the press, is that we must put up with a good deal of rubbish. - Robert Jackson Bye bye 1NZ... |
04-17-2007, 02:18 AM | #53 | |
Lurker supreme!
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Quote:
BTW... you guys argue a lot!!! hahahha!! (my head hurts with all your offset-ery!)
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2006 Red Blitzed RS 5-door |
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04-17-2007, 10:00 AM | #54 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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dood that looks helle sick
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