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.
PolicyMap now has these locations mapped, according to CRA specifications. Low and moderate income Census Tracts are based on a comparison of tract median family income to area median family income. If the median family income of the tract is less that 50% of area median family income, then the tract is considered Low. If the tract median family income is greater than or equal to 50% and less than 80% then the tract is Moderate.