Tier IX Medium Tank Soviet Union

K-91 Version II

K-91-2

Tank ID 30977

Vehicle description

Wargaming Tankopedia

A variant of the K-91 with the frontal placement of the turret. This vehicle was developed by the Design Bureau of the Army Engineering Committee under the supervision of A. F. Kravtsev from March through August 1949. The plan was to mount the 12-cylinder opposed-piston supercharger diesel engine. Mounting brackets with ski-shaped supports were used as support rollers. The development of the project was discontinued at the blueprint stage in December 1949.

Description from the Wargaming Tankopedia · Language selected automatically

Technical profile

Standard configuration

Hit points

1,500

Weight

47.5 t

Forward speed

55 km/h

Reverse speed

18 km/h

View range

390 m

Signal range

730 m

Armour

	Front	Sides	Rear
Hull	110	60	45
Turret	220	90	60

Engine: V-54R · 900 hp

Radio: R-113

Armament

Standard gun and ammunition

100 mm D-46TK

Calibre 100 mm

Reload time 7.2 s

Aiming time 2.0 s

Dispersion 0.35

Rate of fire 8.33 /min

Ammo capacity 55

Shell types

APCR · composite rigid Damage 225 / 300 / 375

Penetration 186 / 248 / 310 mm

HEAT · shaped charge Damage 225 / 300 / 375

Penetration 225 / 300 / 375 mm

HE · high explosive Damage 300 / 400 / 500

Penetration 38 / 50 / 63 mm

Marks of Excellence

Damage thresholds

Combined Damage (Damage + Assist + Tracking)

Combined damage

1 Mark ≥ 65 %

2,493

2 Marks ≥ 85 %

3,626

3 Marks ≥ 95 %

4,683

Approximation based on WN8 expected values — not an official Wargaming figure.

WN8 Expected Values

XVM reference

XVM Expected Values for WN8 calculation (per battle)

Per battle (avg.)

Avg. damage 1,511

Avg. spotted 1.38

Avg. kills 0.92

Avg. defence 0.51

Exp. win rate 52.86 %

Community stats

Measured, not estimated

Average across every profile stored on WG-Watch — real battles instead of expected values.

Win rate

61.79 %

Avg. WN8

2,502

Battles

759

As of Aug 31, 2026

Rank 1 of 129 at Tier IX

Best players on this tank

By WN8

From the stored profiles, minimum 50 battles on this vehicle. Updated daily.

#	Player	WN8	Battles	Win rate
1	skill4ltu eu	3,753	123	66.67 %
2	Quickfingers eu	3,076	109	63.30 %
3	hall0s_Smurf eu	2,872	87	58.62 %
4	Xilense eu	2,592	136	72.79 %
5	Iceprince eu	1,555	58	55.17 %
6	Kirapon asia	422	125	44.80 %