I've stored plenty of cars and have always been under the impression plywood is doing two things. First inside storage, it is a moisture barrier and usually helps not rot out the exhaust system on most cars. As far as tires are concerned the plywood(which I use) or carpet help not to create flat spots when sitting for long periods of time. With the love we each give our bikes daily and how I see people complaining about rust, it would be a cheap peice of insurance over the winter.
As far as tires are concerned the plywood(which I use) or carpet help not to create flat spots when sitting for long periods of time. With the love we each give our bikes daily and how I see people complaining about rust, it would be a cheap peice of insurance over the winter.
Lots of variables go into the process depending on temps. climate, how long the bike sits in one spot to the tire rubber compounds, thickness, and previous sun exposure. Interesting info on the internet about the subject, and as always everybody has good and bad outcomes.
Temperature fluctuates, non-climate controlled concrete floor garage sweats. With no barrier between floor and vehicle the possibility of corrosion increases. Tires will not flat spot sitting for a couple of months over winter as long as the air pressure is kept at specs.
I usualy put a piece of plastic down so the moisture does not come up and rust the bottom. This is in a nonheated shed and the floor has a tendency to sweat. If there is insulation under the concrete then don't worry. Here in the north it can be a problem. This is my own observation and some floors and weather may vary. Just my two cents.
it has mostly to do with the moisture that concrete will let off in the temp changes...you should lay carpet down over the winter... hell my whole garage is carpeted!