
IS-4 X
Skill4ltu evaluation:
- Armour Effectiveness
- Beginner Friendliness
- Gun Handling
- Speed / Mobility
- Ease of marking
- Ammunition
Community average ratings in 569 votes
- Overall (4.31)
- Fun (4.19)
Community average ratings for tier V+ vehicles
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Vehicle changelog
September 3, 2025
- Link to Patchnotes 2.0
- Engine V-12 - Power 750 → 850 (+100 h.p.)
- Gun 122 mm D-25TS, Turret IS-4M (Module Removed)
- Gun 122 mm M62-T2, Turret IS-4M - Ammo rack capacity 30 → 40 (+10 shells)
February 24, 2025
Rerating VOD Link
Modified: Second equipment setup, Crew Perks, Commander/Radioman from Signal Interception to Side by Side, Gunner from Designated Target to Quick Aiming, Ratings, Armour Effectiveness from 5 to 4,5, Gun Handling from 4 to 2,5
September 25, 2023
Modified: Crew Skills : all updated and new 6 skills layout
August 04, 2020
- Link to Patchnotes 1.10
- Replaced the 122 mm D-25T gun (shell types: AP, APCR, HE; penetrations values: 175/217/61 mm) with the 122 mm D-25TS, which has the following parameters:
- Decreased the dispersion during movement by 28%
- Decreased the dispersion on hull traverse by 28%
- Changed the hull traverse speed from 26 to 30 deg/s
- Changed dispersion of the 122 mm M62-T2 gun from 0.38 to 0.42 m
- Decreased the dispersion on turret traverse for the 122 mm M62-T2 gun in the IS-4M turret by 25%
- Changed the reload time of the 122 mm M62-T2 gun from 12 to 11.5 s
- Changed the aiming time of the 122 mm M62-T2 gun from 2.9 to 2.5 s
- Changed the turret traverse speed from 22 to 25 deg/s
- Improved hull and turret armoring



























































