suggested tire size

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01-05-2019, 08:43 AM

#31

Jack88

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No, no noticeable change in fuel economy. What will be noticeable is the degradation in ride quality and a higher probability of rim damage if you hit a pothole.

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01-05-2019, 10:04 AM

#32

TSHong

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Quote:

Originally Posted by boeing377

My stock tires (255 45R 19) are worn out. What will happen besides a plus 1.7 mph speedometer error at 65 if I replace them with 255 40R 19 tires? Will mpg change much? I’ve seen 40s on A8s and to me they look noticeably better even though the profile difference is small.

The load carrying capacity will be reduced but there is so much room for over capacity that it will be ok.