Width wise 720mm with 15in rear tyres they do have normal rears fit indoors easily, The Lifepo4 batteries look like can fit 350long x 420wide x 240high meyra chair my pack 200ah 400long x 320wide 240 height...
Offloading is very responsive turns so easy, seems well planted to the ground 13km no probs. The motors just want to go, weird no delays seems to pull best way describe it, even holds its power when on grass or hills. Have never driven chair like this. Only gripe is being high top bounces around guessing need less tyre pressure, soften front springs

The underside need attention, just some perspex almost covering the control module, not allowed test on beach because electronics poorly protected. For German quality not good photos below

Hopefully get videos up when weather fines up, need to rip up a summit in Auckland test propper hill climb...
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. Have tried the slim wheels, are taller less traction compared to fat tyres. The motors top out at 13.5km, even extra person on back doesn't slow under load.