30 mm would be the minimum to match the stock Roval rim nothing wrong with going to 40mm would hold a 2.6 tyre with a rounder profile. Most factory mullet bikes run a wider rear rim.
Yes same mullet setup as the Canyon Spectral which uses a 2.8 27.5 rear tyre. My friend is running 2.6 27.5 tyre still, but he upped the front travel to 160mm which is within the frame warranty. The aim being to maintain geometry, but make the bike more playful.
Cheaper dtswiss wheelset has the 240 hub same as stock on 2019 Levo base and comp, the more expensive set has the 360 hub same as stock on 2019 Levo expert.
My mate did the rear only, I found him a bargain 40mm Bontrager 27.5 rear wheel at Triton Cycles, shimano hub. If you run 29 up front and at least 2.6 tyre at the back with the bike chip in high position the geometry and bb height will be ok.
Max I’ve had from mine is 32 miles, average if I’m pushing on up the hills in trail mode is 26/27 miles. I’m 74kgs 500w battery.
Is the average cadence figure you quote of 55 correct? Such low cadence will eat battery.
Berkshire Cycles have replaced over 100 motors in the last 3 months, but Chris says he’s getting people travelling from all over the country to get him to replace them.
Recently I have had GPS dropouts, large sections of rides missing. I record with Strava at the same time and no GPS issues rides are complete. Could there be an issue with the Blevo GPS?
Spec sheet says you have a PG 1130 11 speed cassette which uses the classic Shimano freehub body. I have the same on my 2019 comp carbon. Upgrading to the steel version is a good idea.