Jump to content

New trailer tires and sway

Recommended Posts

I towed my boat 3k miles last summer with no sway issues. My boat has 18" moto metal wheels on it, with 255/55/R18 tires. I bought my boat used and the tire pressures were all inconsistent when I got it. I inflated them to all match the highest tire psi which was 35. I had no sway with this setup. On the last trip of the season 600 miles round trip to Powell I accidentally rubbed my sidewalls on a curb and shredded them while leaving town. I stopped by discount tire and bought some new Falken tires of the same size. Discount set the tire psi to 50. The boat swayed all the way to Powell and all the way home. It even set off the traction control system in my tundra. Scared the shit out of me. I lowered the pressure down on the boat trailer tires to 45psi on the way to storage and it still didn't feel super stable. So what do you all set your tire pressures to? I know tires break in over the first 1k miles. Any recommendations? 

Link to post
Share on other sites
14 hours ago, BTown801 said:

@bloodiestcadaver I replaced all 4.

interesting. Having too much air can make it sway a lot. But I think 45psi should be fine and not make a drastic change. Might just be some shit tires. Tires can change alot about how a vehicle/trailer will ride. Maybe discount will let you change them out for a different brand?

Link to post
Share on other sites

@bloodiestcadaver when I rubbed those sidewalls on the curb I was only going about 1-2mph. I'm not sure how to do a toe measurement, but I'll look into it. Discount has a standard operating procedure that they inflate trailer tires to the max psi but I think that is based on bias ply trailer tires and these are radials. I think I'll pull it a little further in the spring and see if the tires break in. I've had new car tires that wander around for the first 1k miles or so. If it doesn't stop I'll swap them out.  @Tbag I don't think my boat was loaded any different than the previous miles towed throughout this year. It's possible I guess. I'm putting on some Load E tires on Monday, maybe that will help too. 

Link to post
Share on other sites
  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...