AH64ID wrote:
1/2" on standard axle spacing is about 1.5% difference, while it's noticeable its not the end of the world.
Chances are if upgrading from 15" to 16" the 15's were OEM and will support the axle rating. The 16" combo should support more than the 15" combo and everything will be fine.
There are some more torsion axle TT's but they are still not very common.
I guess we can all guess at what the real effects are, but IMO I think the issues are greater than they might appear at first glance. Just as those that don't think there are problems can't cite specific facts to support their view I really can't either except by extension in the caution about towing a torsion trailer level, replacing both tires on the same side when only one has failed, and the very slight difference in diameter on duals of only 1/4" as cited
HERE, not to mention the caution from almost all reputable sources to not mix tire sizes on tandem axle trailers. Finally, as I stated originally using a car as a similar situation is not appropriate.
I think the risks are simply not worth the couple of hundred $$$ in short term savings when you could be risking Thousands of $$ in damage from a catastrophic tire failure.
I seldom see mentioned or people actually saying they replace both tires when only one has failed on a tandem axle trailer, but I for one have followed that practice and will continue to do so.
Larry
