Second attempt at 2000 Km/ h ( don 't even wanna think about miles now).
Max speed possible (not really, the engines fail at ~80%) - 2203
Max speed achieved before engines failure - 1812, in ~ 25-30 turns
Engines :
6.55, 6,47, 6.11 - V8
5.83 5.42 5.35 - V8
5.16 5.11 V6
4.67 V8
4.98 4.64 V6
My save is over 100M now, second winter is a couple of days away, Mech skill - 26, Driving - 13. Haven’t seen the base in the last year :). Still need Hydraulic Muscles CBM, but no luck yet.
Warning : spoilers ahead
Some interesting facts : Wheels diameter doesn’t seem to influence speed or acc. in any way, only their type (wide, normal, motorbike, etc) and number (for some reason 5 seems to be the optimum number :P). Both engines and wheels in the same category (V8, V6, etc) have the same weight, even if dimensions are different. It seems that the litrage is the only performance indicator of the engine, meaning that a same voulme V6 engine is better than a similar V8 (because lower weight, almost half). It doesn’t seem to be a particularly order in which engines break when overworked.