[MarkEHansen]

When going to a larger-capacity tire, you must also make sure your wheels will support the PSI as well.

@mwemaxxowner: Keep in mind that the load on your axles is less the tongue weight. If you take your trailer's GVWR of 7500lbs and reduce that by 12% (900lb tongue wt) that leaves 6600lbs. Assuming evenly distributed among your 4 tires, that's 1650lbs each.

Based on the math, that's below the rating of your current tires, so you're not overloading them.

However, there are other factors, like weight distribution within the trailer which can cause a weight imbalance between different tires, so more load capacity would be better.