New kt controller

[Parsons]

Hi guys now that I've decided to buy a kt controller and display yes I should have got one from the start what's the best to match my 1500w+ wheel with 52v 20ah 40amp bms 30 35 or 40 amp controller

 

[vfr400]

30 amps would be sure, 35 amps would probably be OK, and 40 amps will trip the BMS.