I,m going to start a lawn service in the coming months an need to know whats the max trailer (i need atlest a 6' wide tho)you think i can pull with a 98 nissan frontier with a 4cly auto? any help would be helpfull.
A four cylinder will limit what you can pull. I would say you need to stay in the 5x10 range. Unless you have a large ztr you can fir just about any mower on this trailer. Do not overload this trailer because your four cylinder will not like it when it has to get 3,000 of trailer moving. Make sure you have a tranny cooler, and by all means get a trailer with brakes.
Then you will be able to tow most trailers on the road today, until then you will have to stick to single axle trailers so you dont kill that 4 cylinder. I too am looking for a bigger truck (diesel superduty). Good Luck
Your power would be increased but nothing else. Not to be mean but you still have a quarter ton truck that just does not have the structure to manhandle a large trailer like the larger trucks. One of the biggest issues is braking. For example the tow ratings on large trucks are based on braking capability. A powerstroke f250 can pull more than 6.5 tons, but braking is the limiting factor.
If you will reinvest $50,000 into your business you are foolish to spend it all on a new truck. Buy equipment first, then a used truck. And why a Nissan with a V6? Buy a real 3/4 ton up truck that is made to do what you will do with it.
To answer your original question. It will struggle with a machine on a 6x12 but would pull it. Lose speed uphills for sure though. I am pretty sure even a 5x8 or 10 would be close to the same because the weight isn't much different and its the wind drag of the gate that will slow you down. I would get at least a 6x12 if you are serious about the business, you will only be selling anything smaller in a short period of time.