Weight causing tires to rub inside of trailer
When my Maverick (utv) is loaded in the garage of my toy hauler its causing the trailer to sag... naturally. But this past weekend I had a blowout and discovered it was because when going around turn...
Forum Discussion
Tireman9 wrote:So what exactly are you talking about, tire applications or frame damage of rv vehicle systems?MM49 wrote:
Tire coefficient of traction is optimum at rated pressure. It will drop with too much or too little pressure. There is much more to this discussion than just rubber compound. The design of the side wall construction on the ST tire is stronger and more flexible also. The tire needs to flex in unnatural shapes as the tire is slide around a corner. When you install a larger tire with different characteristics you will get a different outcome.
MM49
Interesting. Where did you find the results of tire burst testing for a variety of ST and LT type tires? Since that is the primary measure of sidewall strength, that is the only number that is meaningful to tire engineers in this case.
Coefficient of Friction is fixed by the rubber compound.
Traction force is dependent on the Coefficient of friction x load x contact area.
You might find this paper informational.
and this one too.
Now that we have our tire engineering behind us we can agree that different tires can perform differently. However I can think of no circumstance where relatively minor changes in tires such as ST to LT type in similar sizes (not changing any dimension more than an inch or so) would result in destructive frame deformation, assuming the frame was designed to reasonable standards. I have personally evaluated tires over a broad range of performance characteristics and even compared the "mini-spare" to full size performance tires. While there are of course some differences even this drastic change did not result in component failure of the vehicles involved.
IMO based on the reported refusal of the Mfg to stand behind their product and lacking any documentation from them stating that owners should expect their frames to fail in as little as 13 months (out of warranty) it appears possible that they are just hoping that the RV owners will give up when confronted with the manufacturers deny & delay tactics. The existence of the repair documentation to me suggests they know they have a defective product but again are banking on the fact that few if any RV owners are going to make the effort to file a claim with NHTSA.
MM49
