Is it true that if you switch tires and wheels from to stock to 245/45/18, you need to realign your wheels even if your wheels were already aligned before the upgrade, due to increased tire width, resulting in that possible fact that any minor misalignment that is insignificant with stock wheels will be amplified by the increased tire width?
This was advice given to me and i'm not so sure how true it is -- any suggestions/comments? Also, if i do need to realign, is a frontal alignment sufficient or do i need to have all 4 wheels done?

Thanks in advance