replacing 2 of 4 tires on a TT question
I have a 30 ft TT (7500 GVWR, though I'm not usually over 6K-6.5K lbs) with 4 Maxxis ST205/75R 14 LR C tires (all 4 always at 50 psi per specs). The front axle had 2 Maxxis from 2012, and the bac...
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Unless one has hard engineering data supporting installing wheels/tires that exceed the designed and rated axle weights IMO doesn't make sense. For many light and ultra light wt trailers with 3500lb axles putting tires that are rated over 3500lbs is not really needed. I understand why one would try and point to the age old "reserve capacity" concept, but I'm not sure how valid that is today.
I have never seen any valid and documented studies on this area and I personally can only see it being possibly beneficial if one encounters a road hazard like "curbing" or hitting a pothole where a much higher capacity tire might not be as damaged as a lighter tire.
I have for over 25,000 miles on this trailer run my tires to within 25 to 50lbs of their max load carrying capacity and have seen ZERO adverse effects. That is only a data set of one, but is one I know is good and all that is using the dreaded "china bomb" GY Marathon trailer tires. The only issue I have seen is the one set of Kumho 857s tires that had that extra capacity of over 300lbs per tire load carrying capacity where I lost three of them within 500 miles of each other from tread separation and sidewall bulging and they were less than 4 years old and only had around 5,000 miles use on them and had been running with over 300lbs excess load capacity per tire.
Larry
I have never seen any valid and documented studies on this area and I personally can only see it being possibly beneficial if one encounters a road hazard like "curbing" or hitting a pothole where a much higher capacity tire might not be as damaged as a lighter tire.
I have for over 25,000 miles on this trailer run my tires to within 25 to 50lbs of their max load carrying capacity and have seen ZERO adverse effects. That is only a data set of one, but is one I know is good and all that is using the dreaded "china bomb" GY Marathon trailer tires. The only issue I have seen is the one set of Kumho 857s tires that had that extra capacity of over 300lbs per tire load carrying capacity where I lost three of them within 500 miles of each other from tread separation and sidewall bulging and they were less than 4 years old and only had around 5,000 miles use on them and had been running with over 300lbs excess load capacity per tire.
Larry
