Greetings!
I'm sure there are a lot of us who've been there, where we collect a large sum of Free XP and then decided what tech tree to research, but not entirely sure if you have enough.
I decided to share my little research on amount of free XP needed to get to each tier X. (Note: some tier Xs had different tank paths, like the T-62A & Obj. 140 can be researched thru MT25 or T-34/85, but going down T-34/85 costs less XP.) I've put together the cheapest routes to each tier X without researching anything other then the module that leads to the next tank.
667,870 Kranvagn
671,840 B-C 25t (716,840 w/top gun)
689,010 WZ-113
708,100 AMX 50B
709,145 Obj. 268
714,800 M48 Patton
715,770 T110E4
716,170 Ho-Ri
719,540 Sheridan
720,970 T110E5
727,710 VK72.01(K)
728,910 Maus
735,600 T57 Heavy
752,365 E100 (817,165 w/top gun)
759,222 T110E3
773,340 TVP T50/51
776,850 E50 M
777,700 Foch 155 (840,900 w/top gun)
783,715 IS-7
783,970 Progetto 65
786,770 M-VI-Yoh (859,270 w/top gun)
789,170 Vickers Light
794,945 IS-4
797,410 T-62A
800,110 WZ-121
802,410 Obj.140
802,630 JgPzE100
804,945 Obj. 263
811,810 Leopard 1
819,400 Grille 15
828,700 FV4005
835,400 FV215b
854,470 60TP Lewandowskiego
860,930 FV4202 (960,930 w/top gun)
867,200 FV215b (183)
870,900 WZ-113G FT
902,460 STB-1
I am going to keep this post up to date with any new tech tree releases.
Thanks!