Keep the car from surprising you
Inspection stickers and oil changes are calendar problems wearing a mileage costume. A repeating text is closer to how people actually remember them.
Oil, tires, inspection
If you drive a typical commute, a 6-month reminder is a decent oil-change proxy. Put the shop name or DIY notes in the message. Inspection dates are once a year in many states — yearly recurrence fits.
One reminder or a list
Free accounts keep one active reminder. Use it for the next service, then create the following one after you complete it. Paid is for a full maintenance list.