Originally Posted by cpt97m3
Yes, the M3 tension rod has a much stiffer rubber bushing on the inner side. But the M3 wishbone (lateral link) has a sealed bearing instead of a rubber bushing, so it's considerably stiffer the the 1 & 3 series OE parts. So both will help the precision of the front end.
Is it the same on rear? shall I change only the tension link + subframe bushings or add the upper arm?