Does anyone know if you could put a custom 20" 35-1300-20 with the same backspacing off the stock rim and would it fit my 2004 fx4 supercrew with leveling kit.. Aslo has anyone put a 20" rims 35" tires on there stock ford fx4 and could you trim it to fit and how much. I know with a stock tire you can use a 35" tire but i want to use a custom 20" with 35" tires on ky truck before i put my lift on in future... Any help would help me

 

I'm not positive what the specs are on the OEM 20's.