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dddire's avatar
dddire
Explorer
Oct 14, 2013

TIme to replace tires... Radial or Bias?

So, two summers and OEM tires are shot, worn out on the inside. Likely due to inadequate pressure (my fault I know)

In searching replacements and looking at the load rating, I'm a little shocked.

Trailer, Jayco x17z, 3200lbs dry, 3500lbs wet max and I know we're at our limits with gear/water etc.

OEM tirs, H188, ST185/80/13D

In looking at replacements on etrailer. The load rating x 2 still is really not that much above the trailer wet weight and some are below...

I know manufactures like to cheap out where they can.. but I can't believe they would put tires that are not up to snuff on a trailer.

Am I looking at this wrong? Two tires.. less tongue weight is my load rating requirement or am I really under on my tires?

If I have to I will go up in size.. but it would be just easier to replace with same tire.. and move one of the worn tires to a spare (still lots of tread left for a spare I'm sure)

Thoughts?

31 Replies

  • I would recommend going radial for the sheer increase in gas mileage due to lower rolling resistance of radial tires. When the bias ply tires on my 2007 TT needed replacing, I went radial, and mileage jumped from 13 mpg to 16 mpg average. That's a 23% bump.

    And for what it is worth, I'm not a bit surprised the manufacturer would put on absolutely the cheapest tires he could get his hands on, even if those were barely rated adequate for the load. Remember, they can charge you extra for the trailer if it has a microwave, or TV, or full-size queen bed. But getting a couple bucks extra out of you for tires . . . well, you gotta have tires anyway.