krnmike

sorry i haven't came back to this thread.
I wouldn't necessarily call it trimming.. it's more of shaving it down with a rotary sander.



as you can see i sanded some of it down (i sanded more down to the edge).
If you try to break the resin, it will look ugly and who knows what damage the sharp edges can cause. If you use a rotary, it'll give you a smooth finish & a perfectly uniform finish.

also, i'm not sure what wheel size you are running, how low you are & what your alignment is, but you might have some issues when the steering wheel is fully turned either ways. Cwest fenders have fatter side walls, so the tires might rub on it if you are slammed. Going straight should be no problem though (like all fenders).

gluck!

Torqueless

sorry i'm reviving this thread because i've come across the same problem.

the problem i think he's having is that those tabs, especially the one near the middle tends to rub against the tires if he's going flush. so he would need to trim those tabs that stick out in order to have the clearance..

i lowered my car and got wider tires but on a turn the tire would rub hard against the tab so what i did was fold the fender liner above the tabs and roll the lip upwards to hold it in place... it still rubs on places where the liner sticks out but your method of using the heat gun should work i'm guessing