I will combine two of these things, so there isn’t too much post spam today. You’ve seen the T-34-3 picture already, time to have a look at the changes between the T-34-3 and Type 59

The Type 59 data will be in brackets.

Crew: 4 (4)
Tier: 8 (8)
Health: 1300 (1300)
Weight: 32,8t (33,6t)
Hull armor: 90/50/50 (100/80/45) (armor nerf is probably the most important reason of the T-34-3 introduction)
Turret armor: 190/120/60 (200/130/60)
Turret rotation: 46 (46)
Viewrange: 380 (380)
Radiorange: 600 (600)
Price: 7500g (preliminary)

Gun:
122mm D-25TA (100mm Type 59)
Penetration: 175/300/61 (181/241/50) (well, T-34-3 gets the 300mm HEAT)
Damage: 390/390/465 (250/250/330)
ROF: 4,17 (6,9)
Accuracy: 0,46 (0,39)
Aimtime: 3,4 (2,9)
Ammo capacity: 40 (34)
Depression/Elevation: -3/+15 (0 when facing rear) (-7/+20)

Mobility:
Engine: identical, 520hp (12 percent fire chance)
Power-to-weight ratio: 15,85 hp/t (15,47 hp/t)
Speed: 50km/h, 20 reverse (56 km/h, 20 reverse)
Hull turnrate: 46/46
Identical terrain resistance (passability)
Track hitpoints: 200 (210)
Ammorack health: 180 (170)

Ok – and now all the T-50 8.6/8.7 changes (0.8.6 value in brackets, all changes for elite vehicle)

Speed: 52km/h (60km/h)
Weight: 13,57 (12,68)
Price: 140k credits (200k credits)
Load limit: 16100 (17500)
Terrain resistance: 1/1,1/1,9 (1/1,3/2,3) (better in 8.7)
Brake force: 16000 (39500) (no more stops on the spot)
Turret rotation: 48 (45)
Gun depression: -5 (-7)
Engine: stock 300hp engine (V-4) is now top engine, new 250hp stock engine added (V-3) in 8.7 – two other engines (440,550hp) removed