Join Date: Oct 2009
My Motorhome: Swift Lifestyle 590RS
Thanked 187 Times in 182 Posts
I think any sort of cover helps and yes exposure to the sun will degrade the tyres over time.
I have a set and they are silvered to reflect the sun. Its the ability to stop UV light getting to the tyres that is important. So its important any cover stops UV. I suspect tartan bags will reduce UV but maybe not stop it. Better than nothing and a help.
Now just waiting until we decide to rejoin.
Happy to actively support Black Lives Matter because all lives do matter even black ones.