Swapping between seasonal sets is one of the most predictable jobs a car asks for, and one of the easiest to leave to chance. Nobody sends a reminder, nobody tracks the tread, and the set sits in the garage until the weather forces the issue. Before you sign any service contract, decide who owns that job.
Choose one of three owners
You can do the swap yourself, pay a tire shop, or ask a dealer to handle it as part of routine service. Each option leaves a different paper trail. A self-done swap leaves little trail unless you create one. A shop visit leaves an invoice. A dealer visit may leave both an invoice and a service entry. Pick the owner first, then decide what record that owner will produce.
Write down the tread and the pressure
At each swap, note the tread depth you can see or measure, the pressure you set, and the date of the change. A short note on your phone is enough. Those entries are the sort of routine maintenance evidence a contract may ask for when a tire, wheel, or suspension fault is claimed later.
Ask what the contract says about tires
Read how the contract treats tires and wheels before you sign. Ask whether wear items are excluded, whether tire damage from road hazards is handled differently from mechanical failure, and whether the administrator wants proof of routine service. Get the answers in writing. Tire terms are often short and easy to skip, which is why they cause trouble later.
Store the off-season set properly
Where the spare set sits, and how it is stored, is part of the same job. Ask the shop whether it stores sets for a fee, and whether that storage is recorded on the invoice. If you store them yourself, keep the set clean, dry, and off the floor, and note the location somewhere you will find it again.