Hello I ordered the rims Borbet XL a year ago for my Ford Mondeo MK4 in 235 40 R18. Now I have an MK5 and according to the rim review I can drive the rims in the same size without any runs, in 235 45 R18 but only under the following conditions: K13: On axle 1 the wheelhouse cut-out edges in the range of 45 degrees before and behind the wheel center are completely changed and possibly in the wheelhouse upstanding plastic parts are to be shortened accordingly. K25 On axle 1 the wheelhouses i In my COC certificate, however, only the size 235 45 R18 is stirred up, so I can only drive this one? What do these editions mean and why should the rims not fit if the original ones fit in this size? Thank you Sebastian