Lowsuv wrote:
The steel frame underneath an RV trailer is exposed .
My 21t Komfort has a 6 inch tall steel frame .
It came stock with the crank down spare mounted under the trailer just ahead of the axles . The spare has never been used in 11 years .
An answer for the extra spare tire is probably by taking the GVW weight and then deducting your current actual weight and observing how much reserve you have .
If the reserve is a big number and the frame is significant then you wold be good to go I imagine .
My particular GVW on the axles is 7280 # which is dictated by the load capacity of the stock tires which have an 1820# rating each . In actual practice my trailer axles are about 5400 # or less .
Instead of an extra spare I would spend that money on 4 upgraded LT tires with a load rating of 2271 # + each rather than the 1820# stock tires . And forget the extra spare . Actually that is what I did for my TT and my boat .
I have been rving for 47 years and never I repeat never had a flat tire until 5 years ago. Then the following month I had another one....I got new tires all around and 3 months later I had a bubble on the side wall. So, after my friends started having tire problems I came to the conclusion that once they out sourced tire mfg. to other countries they left the quality control here but made something that looked like a tire so they called it a tire and shipped it to the US. Not just Chineese tires but ones made in Mexico and other countries including Thiland.....We are going to Alaska next summer and I do not want to have to be looking for a tire if I have to put my spare on. NASA and the airlines fly on redundancy so it looks like rv's may have to do that when it comes to tires. My neighbor was coming down I-95 in NC and blew all four of his tires on his TT within a couple of miles....They had never had a tire problem and had gone from Fl. to Maine and were on their way back ....