Then usable tread depth is compared to remaining tread depth in order to calculate tread wear percentages. For example, a tire that started with 10/32 of original tread depth and has worn off 4/32 (down to 6/32 of remaining tread depth) is 50% worn.
1 If you know the census tract number: Use the IRS list of 2014 Qualified Census Tracts by county. 2  If you have a street address: Visit HUD's interactive QCT Map and enter the property address to view what Census Tract the property is located.
Using standard practice, census tracts are classified as LMI if the median income within the census tract was below 80 percent of the MSA median income. If the tract median income was greater than or equal to 80 percent of the area median income, it was classified as MUI.