I run 35 PSI in my bikes.
10W40 synthetic oil.
Never had a problem with 10% ethanol, even in my (sold) 1971 CB350 with factory carb jet sizes.
My GZ250 came with Metzler tires from the factory and they hold air better at 10 years age than brand new chinese tyres and tubes, many times better.
In winter I just run the bike occasionally and drain the gas and pour it in my car about once every 6 weeks, but there are riding opportunities here year round.
I have began to alter between regular and midrange fuel when it gets hot here, seems to pull better and low speed slight spark knock is eliminated.
regards
Mech
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