I have a 16', 7000# tandem axle car hauler style trailer that I use to haul my JD2520 with
FEL and BH which weighs about 4000#. The trailer weighs about 2200# empty so I know I'm not overloaded. I've had the trailer about 3 1/2 years and it seems to always pull fine behind my Ram 1500. It probably goes out an average of 1 or 2 days a week through spring/summer/fall.
Here's my problem: I bought a (brand new) spare tire for the trailer early last year and within 2 weeks of buying it, sure enough I nicked a curb and took a couple of chunks of rubber out of the side wall of the right front. It didn't loose air but the next day I figured I should swap it with the spare which I did. Oddly the tire I took off was almost
bald but, like i said still holds air so OK as a spare. Now here we are barely 1 1/2 years later and that (new) spare I put on the right front is also now
bald!!
The odd thing here is that the other 3 original tires all seem to be wearing evenly and still have good tread left. The 4 original tires are Carlisle Sure Trail ST, 205/75-D15. The now bald spare is a Mastercraft. I always keep 50 psi in all 4 tires. I jacked up both sides of the trailer and all bearings/brakes seem fine. So what gives? Bent axle maybe? Do I need to check the alignment of the axles/springs?
Any help/advice appreciated.