Running in rainly day the tire foam fully abosrbed with water, I clean it and squeeze out the water and play again, repeated several times last 2 days in MX, finally one of the tire have the foam inside broken and being pushed to one side inside the rubber, can't be fixed anyway.
For running in wet I think we need corresponding wheel type, sealed etc.
Thats true, the soft mud is totally losing traction, more the power and weight of the car, more slide and slip, no fun and energy waste.
I also found the motor temperature raise from 60C normal to 90C max. when running in the wet mud, also much shorter running time on the same battery, the water suck by the 4 wheels and the mud stick on the car body made the car total weight nearly 50% heavier!