Quote:
Originally Posted by Nissandriver
1994 Nissan Sentra SE-R running 185/75/14 tires instead of the normal 185/60/14 tires.
I´ve been averaging about 41 mpg for the past two years .
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I had to go look up aspect ratio to understand your tire sizing difference above. So you are driving a taller tire. I had not realized that one could do that and get better MPG.
Here's what ChatGPT told me about it, "A taller tire with a higher aspect ratio (the ratio of the tire's sidewall height to its width) can potentially lead to better gas mileage because the taller tire has a smaller contact patch with the road, which can result in less rolling resistance. However, it's important to note that a taller tire also has a taller gear ratio, which can result in a lower top speed and can negatively impact acceleration. Additionally, taller tires can also negatively impact the vehicle's handling and stability. So, it is important to consider all factors before making a decision to change the aspect ratio of the tire"
I will take the better MPG.
Thanks,