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Old 09-26-2011, 10:57 AM   #43
Stuart M
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If you drop wheel size by 2" should tire size not increase by 2" i.e 205/65/16 to keep same outside diameter of wheel?
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Old 09-26-2011, 11:50 AM   #44
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Quote:
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If you drop wheel size by 2" should tire size not increase by 2" i.e 205/65/16 to keep same outside diameter of wheel?
Correct. When you minus size, you do less wheel and more tire to keep the diameter as close as possible to stock (within 3% of the original size).
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Old 09-26-2011, 04:33 PM   #45
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Beside maybe poorer handling (which isnt a concern in winter) is there a reason not to 65instead of 55. I'm lucky enough to be spending the winter in north Jersey which may be pot hole capital of north east.
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Old 09-26-2011, 04:45 PM   #46
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Beside maybe poorer handling (which isnt a concern in winter) is there a reason not to 65instead of 55. I'm lucky enough to be spending the winter in north Jersey which may be pot hole capital of north east.
205/65 will be too big and mess up the speedo, and possibly rub as well... You want to stay within 3% of original diameter as said.
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Old 09-26-2011, 05:01 PM   #47
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I must be missing something:
205/40/18 diameter = 537.2mm
205/65/16 diameter = 536.4mm
205/55/16 diameter = 516..4mm
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Old 09-26-2011, 05:27 PM   #48
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Best way to illustrate it:

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Old 09-26-2011, 05:31 PM   #49
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205/65 will be too big and mess up the speedo, and possibly rub as well... You want to stay within 3% of original diameter as said.
What he said.
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Old 09-26-2011, 05:52 PM   #50
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I can vouch that the Dunlop 3D's did a great job for me last winter. When are you guys planning on switching over. I'm thinking begining of November in Jersey.
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Old 09-27-2011, 07:13 AM   #51
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Math.....( Thanks for pointing out my lack of it

I'm going to swap over mid November.
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Old 09-29-2011, 09:00 AM   #52
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Correct. When you minus size, you do less wheel and more tire to keep the diameter as close as possible to stock (within 3% of the original size).
Forgive me if I'm missing something, but if the outside diameter of the tire stays the same (or within 3% of original) then what is the point of going with a 16" wheel versus a 17" or 18"?

I thought the idea was that a smaller wheel diameter leads to a smaller footprint, but if the OD of the tire is the same then where does that smaller footprint come from?
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Old 09-29-2011, 09:28 AM   #53
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Forgive me if I'm missing something, but if the outside diameter of the tire stays the same (or within 3% of original) then what is the point of going with a 16" wheel versus a 17" or 18"?

I thought the idea was that a smaller wheel diameter leads to a smaller footprint, but if the OD of the tire is the same then where does that smaller footprint come from?
There are several benefits of minus sizing:

Less wheel gives you more sidewall for pothole protection.

Smaller diameter wheels are often narrower than their larger counterparts which will in turn allow for a narrower tire.

Lastly, the smaller sizes are usually more cost effective.
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Old 09-29-2011, 04:35 PM   #54
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2012 2dr GTI manual
location: Northern Vermont (brrr!)

We get a lot of snow and I live at a relatively high elevation on a dirt road, and drive on a lot of hills into work each day. So the 16" package sounds good, for the conditions. But we also have to put snows on in early November, and they stay on until late March or early April (yes, we've had accumulations later than that even) usually. I've never minus sized before but it seems that's the best bad weather choice--I'm just a tad worried that if it doesn't snow enough, I'll be driving a lot on dry pavement in crappy tires! Guess that's better than driving into a ditch in the snow, though.
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Old 09-30-2011, 07:59 AM   #55
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2012 2dr GTI manual
location: Northern Vermont (brrr!)

We get a lot of snow and I live at a relatively high elevation on a dirt road, and drive on a lot of hills into work each day. So the 16" package sounds good, for the conditions. But we also have to put snows on in early November, and they stay on until late March or early April (yes, we've had accumulations later than that even) usually. I've never minus sized before but it seems that's the best bad weather choice--I'm just a tad worried that if it doesn't snow enough, I'll be driving a lot on dry pavement in crappy tires! Guess that's better than driving into a ditch in the snow, though.
If you live in an area where you get significant accumulation or maybe the plow doesn't get there as early or often as it should, I would go with something like the Blizzak WS70 or Michelin X-Ice Xi2. Of the two, the Bridgestone would have the better winter traction (very close though) and the Michelin would be a little better handling on the dry roads (not as good as a performance winter tire, but better than the WS70).
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Old 09-30-2011, 02:53 PM   #56
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If you live in an area where you get significant accumulation or maybe the plow doesn't get there as early or often as it should, I would go with something like the Blizzak WS70 or Michelin X-Ice Xi2. Of the two, the Bridgestone would have the better winter traction (very close though) and the Michelin would be a little better handling on the dry roads (not as good as a performance winter tire, but better than the WS70).
Yeah, that's what I was thinking. Thanks; I have a set of Michelin X-Ice Xi2 tires used but one winter--but their for my old car, 225 45R18, dang it. They worked very well last winter on a Fusion Sport.
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