Fourdoor
Active Member
What size tires are appropriate for 18s?
It seems pretty standard that the Model Y speedometer reads 2 mph faster than you are really going if you check with GPS. If you want to eliminate that go with slightly larger diameter 255/55/18 or if you want the exact same diameter as stock you can go with a narrower (should be more efficient) size 235/55/18.
Keith
PS: If Tesla had restored the 90 mph top speed on AP I would have gone with the narrower tires and just adjusted my speed up by 2 mph... but with the 80 mph top speed in AP I am under the speed limit (really travelling 78 mph) when I am driving through certain areas of Texas.