I have a D30 with 35's been on for over a year now and I want to gusset the inner C's. But I don't want to waste the money if there already bent (put that towards a PR44). Is there a good way to check if there already damage without getting an alignment?

 

Check the camber. Measure top of wheels and bottom of wheels. Compare and do math.

 

Ok. Whats the spec so I know if its beyond the limit or not?

 

From memory, I believe the jk camber specs are -.6 to .1 degrees.... Any thing else would mean your C (or something else) is bent. Keep in mind that if your ball joints are bad they will give you incorrect camber as well, so don't automatically consider your C's