335/30 18 on 67'-68'

[JETSET700]

Ok this subject is not new I know. I'm going DSE Quadralink & deep tubs on my 67'. DSE recomends 315s on 18x11s for 67'-68'. Thats what customer cars have on their site, etc. I need to order wheels & tires soon as the
DSE stuff is on the way. I know some have done 335s on 67'-68' but how
tight are they? If I go 315s can skip the lip rolling? Car is painted. 9 in. on
the way is DSE spec. 50" + 2.5 offset each side. So 55". Any BS & axle
measurments for the two combos would be great!

Peter