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Old 09-14-2010, 02:13 AM   #1 (permalink)
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Taller front tires to reduce windshield angle

So I was thinking about running a larger set of wheels/tires in the front of my car to help reduce the windshield angle. What do you think?

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Old 09-14-2010, 03:45 AM   #2 (permalink)
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Eh, miniscule difference, i'd say. Not to mention silly looking, potentially unsafe, your speedo would be way off and you would introduce a ton more air under the car.
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Old 09-14-2010, 05:35 AM   #3 (permalink)
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Well you'd be reducing the windshield angle, but anything you gain will be lost on the underside
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Old 09-14-2010, 05:46 AM   #4 (permalink)
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Lowering springs in the rear. Strut cap spacers up front. Alignment. Front bumper via Nascar styling department.

Do it!
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Old 09-14-2010, 09:14 AM   #5 (permalink)
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Quote:
Originally Posted by cycleguy View Post
So I was thinking about running a larger set of wheels/tires in the front of my car to help reduce the windshield angle. What do you think?
What is the current attitude of the car? Does it sit lower in the front? Do you have an undertray installed?
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Old 09-14-2010, 09:21 AM   #6 (permalink)
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Hucho did some tests on windshield-to-hood angle, and found that a more obtuse angle was better, but the effect was small. But you're proposing to change roof and underbody angle, and the amount of tire exposed to the air, all of which will have a bigger impact than absolute windshield angle.
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Old 09-14-2010, 10:00 AM   #7 (permalink)
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seems to me you would increase the frontal area by making the angle of the floor anything but parallel to the ground.
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I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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Old 09-14-2010, 11:28 AM   #8 (permalink)
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I too was thinking that the underside exposure would be a problem. I might try this in the future anyway as I do plan to get 13 inch wheels after my current 12s are all worn out.
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Old 09-14-2010, 11:53 AM   #9 (permalink)
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I agree with RobertSmalls. You'll likely gain in that one area, but loose in a lot of others.
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Old 09-15-2010, 05:41 AM   #10 (permalink)
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Also, the rear window (if it's a sedan) would be steeper

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