The rusty bits don't look that good but I doubt its bad enough yet to affect it
but saying that it must be weaker/more flexy in that area so will need doing asap
has the car got a matching pair of front lower arms as in a pair of 13 or 14/14a arms
just an idea an arm has been swapped in the past and the 10mm difference between
the 13 and longer 14/14a arm
maybe worth checking both are same length,as we never know what's been done to our cars in the past really
and them lower arms bend easy when you hit a wheel on a kerb
