my hobby cars hibernate every winter.
this year i got these little ramps called flatstoppers from raceramps. going to try them out on the Z. it's suppose to distribute the weight of the car to a larger area of the tires to prevent flat spotting.
Flatstoppers ™ - For Long Term Vehicle Storage, Stops Flat Spots from Forming on your Tire during Storage! | RaceRamps.com your best solution for Lightweight Car Ramps!
without it, i usually turn the tires every 3 weeks... psi at 42.