thank you, I was gonna go 295, but this deal was too good to pass onIt will fit but that is the smallest width that is recommended for a 305. Best fitment would be an 11" wide wheel or a 295 tire. If you're just cruising with this thing and don't really do anything spirited or in regards to tracking/autocross and/or just keep it going straight when getting on it you should be ok.
https://tiresize.com/calculator/
Pretty useful calculator for checking out to see what should fit on a wheel. Typically you want to try to be right in the middle of whatever the min/max is for best fitment