B Busterboo Veteran Oct 4, 2022 #1 If your E89 has an N54 and is on 18/225/40s & 18/255/35s, then 36 & 44psi really do work. Have just gone back to them after experimenting with others. Fun, but a waste of time.
If your E89 has an N54 and is on 18/225/40s & 18/255/35s, then 36 & 44psi really do work. Have just gone back to them after experimenting with others. Fun, but a waste of time.
