Join Date: Sep 2008
Location: Marshall, Michigan, USA
Ah, yes and no.
One has to consider the ratings of the tires and other structural components. One also has to consider stability.
When Mr. Honda says 365 lbs., I take him at his word.
If Mr. Suzuki says 440 lbs., I'd tend to take him at his word.
Generally, I'd make only those modifications approved by the manufacturer or where I had a LOT of knowledge that a consumer wouldn't normally have. I personally don't have the expertise to evaluate the axles, wheels, welds, etc.