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Originally Posted by CapriRacer
First, I don't think you'll find anything narrower in a 15". (I'm assuming you don't want to change wheels)
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You assume correctly.
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Second, I wonder why you would want to make this change. In the case of fuel economy, bigger is better - and by bigger I mean any of the 3 numbers used to determine tire size.
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Have to disagree with this. A narrower tire would be preferrable, I think. Of course, you do need to go to a higher profile to maintain or increase tire diameter. And increased sidewall height could possibly increase RR.
quote]Besides, the difference between tires is SOOOO much larger than the difference between sizes. Careful selection of the tire (meaning make and model) is THEE most important thing.[/QUOTE]
This is true. Any suggestions?