When you say the car was stood up for a year do you mean, parked in one place and not moved at all? if so im 99% sure that your problem is your tyres have got flat spots in them, you should also have a wheel bearing like drone aswell, when i use to work at a garage that sold cars we had the odd one or 2 that didnt sell very quickly, that was the first time id come across this, first check id do is put the spare on the rear, either side, doesnt matter, take it for a drive and see if its the same, ok so it will be a saver spare, but if your careful hitting 55/60 wont matter for a small amount of time