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Re: Fw: Going to look at a '71 B tomorrow

To: <>, <>,
Subject: Re: Fw: Going to look at a '71 B tomorrow
From: "wizardz" <>
Date: Sat, 18 Dec 1999 18:54:32 -0500
thanks Rick... exactly what I was saying...
just didn't think I needed to 'spell it out'
so eloquently.... back when I first said this.

with diameter constant, a  wide increase=larger contact area.
-----Original Message-----
From: <>
To: <>; <>
Date: Saturday, December 18, 1999 1:36 PM
Subject: Re: Fw: Going to look at a '71 B tomorrow

>Can I toss in my $.02 here?
>Lets say you have a car that has 185/75/14 (just to pick a size) if you go
>a 195/65/15 the tyre will have the same diameter.  This is called plus one
>(One inch larger rim = shorter sidewall) If you then go to a 205/55/16
>same diameter.  This is called plus two.  Go up one more size to a
>plus three.  Now I haven't been to the tire store today, but I will be
>willing to bet that at 215/45/17 is wider, and has a larger contact patch
>(square inches) than a 185/75/14, yet they will have the same outer
>This whole discussion reminds me of when I sold tires and a customer would
>come in and ask for a 15 inch tire.  What size 15 tire I would ask, and
>would reply it doesn't matter.  So I would roll out a 165/15 VW tire and an
>L70/15 tire for a caddie.  The look on their faces was worth it.
>(Who lives in California where we have lots of snow, but we keep it in the
>mountains where we can visit it when we want to, we don't live in the
>(gonna be 75 today)
>In a message dated 12/18/99 7:04:00 AM Pacific Standard Time,
> writes:
>>  - I have no idea where you grew up and learned to drive but anyone that
>>  thinks that wider tires perform better in the snow is asking for
>>  Look at any snow tire anywhere and what do you find - A narrow tire with
>>  an aggressive tread pattern. I am not talking about a worthless
>>  "All-Weather" tire. I mean a real snow tire. A wider tire decreases the
>>  weight to surface area of the tire. So that for the same weight car a
>>  narrow tire has more of the weight on the tread than a wider tire. (PS I
>>  also disagree with the concept that a wide tire of the same diameter has
>>  the same contact patch than a narrow tire). This information is based on
>>  reading, and personal experience. Try taking a RWD car with the factory
>>  tires out in the snow. Take the same car with a wide "sport" tire in the
>>  same snow. Wanna see the ass end in front of you real fast??? BTDT Wide
>>  tires do not hold in the snow. Wanna go out in the boonies in the winter
>>  to go hunting?? You will never get there in one of those 4x4's with the
>>  fat tires. Unless you are talking balloon tires and that is a whole
>>  'nutter concept of moving over the snow - not through it. Tread pattern
>>  has more to do with the ability to move in the snow than any other idea.
>>  Larry
>>  >>>>On 12/18/99 8:52 AM so and so (Allen  Hefner) said. (And I quote:)
>>  >In a message dated 12/17/1999 5:41:36 PM Eastern Standard Time,
>>  > writes:
>>  >
>>  ><< Simple. It doesn't. They have the same contact area, just different
>>  > length & width dimensions. More width x less length = same area.
>>  >
>>  > Let me repeat: wider tires do not give you a bigger contact patch
>>  > you also lower the tire pressure). They just change its shape. It just
>>  > happens that the shape makes a difference. >>
>>  >
>>  >- - - - - - - - - - - - - - - - - - -
>>  >
>>  >Keep in mind that what we are comparing is two tires that are EXACTLY
>>  >same.  The same rubber compound, the same sidewall height, the same
>> sidewall
>>  >stiffness, the same tread, AND the same tire pressure, all on the same
>>  >In that case, the contact patch will be the same area, even with
>>  >width tires.
>>  >
>>  >Back to the real world.  Wider tires are of no advantage if they have
>>  >same sidewall height and stiffness.  They aren't much stickier (for
>>  >competition use, at least) if they don't have a softer rubber compound,
>>  >etc.
>>  >So in the real world, narrower, taller tires tend to have a smaller
>>  >patch area than wider, lower tires (that you probably bought to make
>> car
>>  >corner better in the dry), and so they are better in snow.
>>  >
>>  >Ok...back to LBCs.

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