suggested tire size
#31
AudiWorld Super User
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.
#32
AudiWorld Super User
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.
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S4 (B6 & B7 Platforms) Discussion
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