This past Saturday I was able to actually get a good comparison of my RB5WC vs RB6. We are running the KBRL series here in Arizona and this past weekends venue was rained out so the organizer moved it indoors to where we ran RD1 and where I ran my RB5WC to a 1st place finish.
Same exact layout, same track conditions, over a 20 lap average my RB6 picked up 1.1 seconds a lap over the RB5WC.
Qualified 3rd, worked my way up to 1st. 2 bad laps half way through pushed me back to 2nd and 15 seconds behind 1st. The last 6 laps I was charging and finished 1.8 seconds behind 1st. I decided to change the front tires from what I ran in qualifying which was a mistake (they were inconsistent). Should have just used what I qualified with.
Losi 37.5/32.5 and White/Gold was working great. May even try Gold/Gold next weekend on a higher traction indoor track, but I think for me the White/Gold are good.
Dean