You have to try by yourself and feel the difference. I suggest to try 2mm plate and no plate at all, so you can feel the difference right away.

( I think it will take away some rear grip ........ I'm also interested to know the answer of this question too for 415 cars ).


I don't know if this experience is applicable for 1/10 electric cars :

In my 1/8 nitro car, high roll center cause my mrx4r to understeer at middle cornering ........ probably because of too little body roll action on the back, thus the car hard to roll and simply turn wide.

After I changed the rear suspension block with the lowest roll center ( close to main chassis ), my understeering problem become less crazy.