Re: Question about boat trailer tires for winterization.
Have to disagree with the naysayers here. Taking the weight off your tires does, in my opinion, help prevent premature failures due to flat spotting. Whether a bias or radial tire, either will benefit from having the weight removed from them. When the tires sit and flat spots occur, the cords take a set. Granted, they return to normal once warmed up usually but somtimes they don't and that is when heat builds up and causes failures. I don't know if there is concrete evidence either way but I can say from experience that after I started supporting my trailer during periods of non-use I have not experienced a tire failure due to a tread separation or sidewall failure. My current trailer tires are 4 years old. They look very good with zero signs of cracks, the tread is worn evenly, the depth is excellent, they tow very well and have over 10,000 miles on them. (Tandem) I jack my trailer up if I will not be using it for more than a few weeks and remove the tires and store them in the garage over the winter. I don't have any evidence that says it does NOT help so for the minimum of effort involved I do it. Just my $.02.