I agree with Alex.
This is a modification; temporary or otherwise.
Your insurance company needs to be advised of ANY modifications.
Non standard OEM fit wheels and tyre 'upgrades', suspension alterations, camper conversions (no matter how small), probably added cruise control etc, etc.
Otherwise, you will provide your insurance company with a reason to invalidate your insurance (should they choose); especially if you are the cause of an accident.
When I had a conversion my insurance company declined to insure the van (not refused).
Imagine my situation if I had not declared the conversion and been involved in an accident !