tire width

install the spring relocation kit first then measure the space you have available inside the wheelhouse and the distance to the front lip from the center of the axle. a 275 should fit then but you may need to trim/move the front lip forward.

once I did the relocation thing a 29.5x10.5Wx15 slick fit but I did have to trim the front lip. of course it's not a scamp but you can see the space to the front lip