Re: Need to tie something on the roof...
Get it delivered or put it in a trailer.
It is not worth damaging the car with straps to save a few bucks. The only way aside from roof racks, would be to run a strap around it on the front and rear doors. This however will damage the paint and door rubbers. The mattress is flexible and needs to be tied down properly.
Past: MY2011 CRD Overland in Bright Silver
Present: 2014 SRT, HK & Roof
No Boost, Not Bottle, Just my foot on the throttle