![ussr ussr](/images/flags/flag-ussr.png)
Object 257 IX
Live recordings
- Armour Effectiveness
- Beginner Friendliness
- Gun Handling
- Speed / Mobility
- Ease of marking
- Ammunition
Community average ratings in 523 votes
- Overall (4.03)
- Fun (4.08)
Community average ratings for tier V+ vehicles
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IXObject 257
Breakthrough Heavy Tank
This is a proposed field modification from skill4ltu for Object 257.
![Object 257 Object 257](/images/fm/vehicles/R151_Object_257_2.png)
II
![checkmark](/images/fm/checkmark.png)
![All-Terrain Suspension All-Terrain Suspension](/images/fm/eq/additionalGrousers_disabled.png)
![checkmark](/images/fm/checkmark.png)
![Lightweight Suspension Lightweight Suspension](/images/fm/eq/betterFriction.png)
IV
![checkmark](/images/fm/checkmark.png)
![Parallax Adjustment Parallax Adjustment](/images/fm/eq/improvedScope.png)
![checkmark](/images/fm/checkmark.png)
![Aiming Gears Lapping Aiming Gears Lapping](/images/fm/eq/improvedAimingHandling_disabled.png)
V
![checkmark](/images/fm/checkmark.png)
![Sound Insulation Sound Insulation](/images/fm/eq/improvedSpallingResistance_disabled.png)
![checkmark](/images/fm/checkmark.png)
![Periscope Electric Drive Periscope Electric Drive](/images/fm/eq/improvedObservationDevice.png)
VII
![checkmark](/images/fm/checkmark.png)
![Power Supply Rewiring (Setup 1) Power Supply Rewiring (Setup 1)](/images/fm/eq/improvedSpeedIndicator.png)
![checkmark](/images/fm/checkmark.png)
![Power Supply Rewiring (Setup 2) Power Supply Rewiring (Setup 2)](/images/fm/eq/improvedTurretTurningWheels_disabled.png)
Changes to technical characteristics
Effectiveness of maintaining speed when crossing all terrain types
-7%
Hull traverse speed
+5%
Suspension durability
+10%
Accuracy
+3%
Aiming time
+5%
Stun duration
+10%
Additional stun duration
+15%
View range
+3%
Top speed
+4 km/h
Turret traverse speed
-7%
Aiming time
+5%
Vehicle hit points (bonus of Standard Modifications)
+3%
Engine power (bonus of Standard Modifications)
+2%
Vehicle changelog
September 25, 2023
Modified: Crew Skills : all updated and new 6 skills layout