Tires radials or steel belted?

[skycam_tx]

Went looking for new tires for boat trailer. 1997 originals starting to dry rot(205 75 d14)<br />gave one guy the numbers and he said the d14 stood for steel belted tires and recommended I get radials.<br /><br />What is the difference between D14's and R14's?<br />also had 4 ply radials and 6 ply..obviously 6 ply is better made but is it worth it?

 

[DJ]

Re: Tires radials or steel belted?

Skycam,<br /><br />MOST radials are steel belted. There are a few that are not, but they are rare.<br /><br />R=radial<br /><br />D=load range<br /><br />I suspect your originals were not radials. They MAY have been steel belted bias ply.<br /><br />Radials are fine for a trailer, as long as.<br /><br />1. They ARE NOT passenger car or light truck tires.<br /><br />2. They are "ST" designation. "ST"=special trailer.<br /><br />If your load range is OK with 4 ply, those will be fine.