I tested it at the austrian nats last sunday, in training the clay track was really wet so the grip was there and the Rm4 gave more steering because the torque of the motor goes to the front. My laptimes were faster about one tenth of a second than hupo and only a little bit slower than Trauner.
When all dried up the track was really slippery and very difficult to drive, I made it in the A-main, but i noticed to late that i should switch to RM3 for this slippery conditions.
SO FOR YOU ALL:
RM4 when grip is there.
RM3 when slippery.
BRGDS
Andi
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