Few Questions + New Tires !

So, I just got my new tires n’ rims from Canadasmotorcycle.ca. Went with the 26" Kenda Bearclaw HTR’s and Delta Steel rims as they didn’t really have to be special. Must say the tires sure do have some grip to em + they are huge compared to my stock Carlisles. I will post a review on them once I have about 1-2000km on em as only time will tell how i like em.

As for questions,
After I put the new tires & rims on, I noticed a lot of movement side to side in the wheel when I shook them. Mainly only the rear tires, and when I ride, if I turn quickly and back straight, it feels like the rear end is swaying. Would this be the wheel bearings ? or should I be looking at something else.

Also hearing a squealing/whining while on the throttle. It only comes while I’m moving over 15km/h(nothing in neutral or park) and like I said above, only when on the throttle. If I let off it’s gone. Have a feeling it’ll be Belt or clutch as that’s(to the best i can hear while riding) where it sounds like its coming from.
For Christmas I plan on treating myself to a clutch kit so if the squealing ends up being the belt, it’ll be replaced when that is installed or it breaks.

Lastly(I think), after being lazy and never topping up my battery, there had been some problems starting, flickering lights, and a funky idle. I decided to take it out while I was changing the tires and, well I should have done this months ago. She was pretty low, and now that its all filt up, starts as if it was brand new, and no more of the above problems. This is a questions, as instead of having to care about keeping the battery filled, I might get a sealed one after the winter, which batteries have you guys & gal’s used for replacements on the 570 ? Royal Distributing has a "high performance" Yuasa for an alright price, plus it’s a quick drive.

Sorry about the story length of writing here, have nothing better to do. If ya’ll could help my out that’d be pretty cool. I’ll post pics soon of new tires.
Thanks in advance.

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