I have noticed random speed radar signs showing my speed and looking at my speedometer.. slightly off Additionally, I feel like the speed shown on the speedometer is a tad higher than my actual speed.
So I wondered if the tire setting for rear tires was at 245/45 R18H instead of the installed 255/40 R19(Msport pkg)
Sure enough it was set wrong!
So I changed it.
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I wonder how this affects my overall miles on the odometer. I believe the previous owner had it set wrong and when I did a reset, it also defaulted to 245/45 R18H instead of the installed 245/40 R19(Msport pkg).
The previous owner sold the car(2023 i4 e40 MSport) to me with 17,600 miles. She had it 12 months.
Hmmm, 19" wheel will travel about .4 inches more than a 18" wheel.
www.blocklayer.com
So I wondered if the tire setting for rear tires was at 245/45 R18H instead of the installed 255/40 R19(Msport pkg)
Sure enough it was set wrong!
So I changed it.
I wonder how this affects my overall miles on the odometer. I believe the previous owner had it set wrong and when I did a reset, it also defaulted to 245/45 R18H instead of the installed 245/40 R19(Msport pkg).
The previous owner sold the car(2023 i4 e40 MSport) to me with 17,600 miles. She had it 12 months.
Hmmm, 19" wheel will travel about .4 inches more than a 18" wheel.
Tire Size Comparison
Calculate tire diameter from code and compare tire size speedometer differences
www.blocklayer.com
