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My local tire shop owner recommended me to replace 225/60 16 to 215/65 16 since it gives better mileage and better speed ratio. The owner is a reliable guy who I have known him more than 8 years.
But when I checked the diameter of the tire has been increased by 9.66mm. Does this bigger diameter and narrower dimension affect any safety or mechanical parts in the future?
Now less road noise and smooth ride but I am concerning any safety issue on the family car.
FYI, the diameter increase ration is about 1.5%.
Thanks in advance,