Thanks for the input. I did not install the fenders on the Volador and I think the clearance from the chain stays seems adequate. But good point on the top of the front fork. That could be the sticking point.Not sure. The bottle neck (without fenders) would likely be clearance at top of fork and chainstay/seatpost. Dolphin tires are 20x 2.35” which is just a hair or two shy of 20x 2.40”, which has a lot more options from BMX world (though not necessarily designed for high speed).
EBR's review details suggest the forks and chainstays between our models are identical. I'd go for it. You are already running 20" x 1.95" setup which is less than 1/2 an inch total and only 0.20 of an inch shy either side of 2.40", that's nothing. Don't forget to upsize slightly larger matching inner tubes with tires, to avoid problems.
When my Dolphin's OEM tires wear out, I'm already looking at:
Schwalbe Super Moto-X 20" x 2.40"
OR
Vans by Cult 20" x 2.40" Classic Waffle in Black
I don't have a lot of water-shedding needs to deal with, so the fun and aesthetic of Van waffles might win over practicality.
Which Schwalbe Marathon Plus tires did you get?It made a world of difference upgrading the tires on the Volador to Schwalbe Marathon Plus, though they were thinner than the stock tires. Far more comfortable and stable ride, absorbs the bumps, better traction all around, plus they're highly puncture resistant.
Did you get SUPER MOTO-X HS 439?I was finally able to get my LBS to install the Schwalbe Super Moto X 20x2.4 tires on my 2019 Volador. What a difference over the stock tire! Highly recommend doing this if you want better handling and ride quality. Turns out to be a fantastic upgrade. If I were buying new today I would buy the Qualisports Dolphin for the upgraded tires and battery.
I think that's the HS 439.I don’t know beyond Super Moto X but these are Ebike rated, have 3mm green guard puncture protection, reinforced side walls. Tire pressure recommended @ 30-60 psi. I run them at 40 psi. Very comfortable.