'90 RRC. 32" tires.
My speedometer can't decide if it's optimistic or pessimistic. Sometimes 40mph indicated shows as 47 on two GPS devices, Sometimes 50 indicated shows 42mph. Slower speeds are off, but higher speeds are closer to being correct. I'm assuming it's a sending unit somewhere. Is there a good replacement unit available, and is there one that can correct for non-stock tire sizes?
My speedometer can't decide if it's optimistic or pessimistic. Sometimes 40mph indicated shows as 47 on two GPS devices, Sometimes 50 indicated shows 42mph. Slower speeds are off, but higher speeds are closer to being correct. I'm assuming it's a sending unit somewhere. Is there a good replacement unit available, and is there one that can correct for non-stock tire sizes?