I posted several months ago about my first camping trip with my weekender on a 5X8 NT trailer with the stock 5.3X12 tires. After several tweaks of leveling the tongue height, dropping tire pressures, and tongue weight adjustments I still had a "jittery" ride. I could feel a lot of jerking and bouncing back through the hitch, especially on rougher roads. I chalked it up to the stiff 12" trailer tires and the stiff springs on the 2,000 lb trailer. Before my second trip this past weekend, I had completed the upgrade of my tires to 175-70R-13 General passenger tires. What a difference! I made a 300 mile round trip to the SC coast and the trailer performed beautifully. No jerking or bouncing like the last trip. On a really smooth road you couldn't tell that the trailer was even there. I would highly recommend this upgrade.
FWIW - I really didn't have a problem with the safety issues concerning the original Chinese tires as I've had them on my HF utility trailer for years without a problem. I was mainly looking to improve the ride with the softer passenger car tire.
