Chris didn't say what tires are on the rear, but a 225/75 is shorter than the 225/75.
245 = 245 mm width
75 = height = 75% of the width = 183.75 mm
15 = inside diameter = 15 inches
225/75 height is less: 75% of 225 = 168.75 mm
Why mm and inches are mixed up in the same part number is baffling.
