Hi there, same issue here in Paris. I've got a 2017 Vado 3.0 with almost 4K km on the clock and I've had this issue for the third time, and 2 spokes snapped in one week! Always at nipples. The trouble is I didn't spot it when one broke recently and the rim got a bit veiled. Took it to a local dealer's who replaced the broken spoke and managed to get the rim straight, but he highlighted the fact that the rim has a bit of a dent (that I didn't spot, BTW). And this Thursday, back from work on a flat road, absolutely spotless, and I heard this CLANG that made me think Oh oh, here we go again. I went to see this mechanic again and we agreed that we'd have to re-spoke it one of these days. I also rang the nearest Specialized dealer to find out if they knew about this issue. Since they don't sell a lot of Vados, they hadn't heard of this. We spoke about weight, tyre pressure, and though I am a bit overweight, 10 kilograms are not an issue to him. I mentioned the fact that there's a tiny angle at the junction spoke-nipple, which makes him think that there's not enough play for the nipple in the rim hole. His conclusion was we should re-spoke with different spokes and longer nipples.
Now, another issue is for me to find a rim. Most rims won't withstand weight above 242 lb/110 kg (bike + rider). So you'd have to go for a proper e-bike rim, and they're not very popular round here! The factory rim's a ETRTO 622x27 - 28 holes. Try and find one! I had found a Mavic e-Crossmax wheel on offer, but it's 30 mil wide inside, and manufacturer specs say it's good for tyres from 60 mil. Not good because the Vado stands on 47 mil tyres. Mavic rims, forget them. Either they're a bit too wide, or they can't handle the weight of an e-bike. I searched from the web and the only rim that I found's a H522 from DT Swiss. It's 25 mil wide inside, which fits these tyres according to a Shwalbe chart, and can handle up to 150 kg.
Do you guys recommend any other rim that'd fit this bike?
Many thanks in advance. Ride safely