Quote:
Originally Posted by N2TRUX
I have done several sets with out any failure too. With that said, I also had a buddy that trimmed a set and they failed. From that point on I started boxing the bottom of mine.
The safest solution to this issue is run a 18" or bigger wheel.  |
Doesn't matter as far as trimming the a-arm lip. It just makes contact in a different location. The 18x8 TT2's I had w/5.25"bs required me to trim the a-arms on my 74 farther back than what I had to for the 15" ralleys before them.
I've also trimmed the lip on multiple trucks w/o experiencing any failures. I feel 3 key points to focus on are:
1) Avoid removing any material from the vertical portion of the arm. The vertical height is where the BJ area benefits the most for strength.
2) Drill a hole in the lip where I plan to terminate the area being trimmed (to minimize stress cracks).
3) No jagged edges. No perpendicular cuts. Everything needs to have smooth transitions (again, to minimize places for stress related cracks to form).