Mixed Tire Types

phipps33 wrote:
We just bought a NTU travel trailer. I noticed that 3 of the tires are radials with one being bias. Is this a problem?

A dot date code won't help your question.
Bias and radial mix ??
Here is what I've found when I was on the road.

Do not mix bias ply with a radial on a trailer that sees lots of highway use. Sure we can mix them on a old utility trailer or a lawn service trailer or a hay wagon/etc that spend most of their life rolling around town or close to home.

The biggest safety issues IMO is braking. With a bias on one end of a axle and a radial on the other the axle won't have balanced braking especially under hard braking events and on wet pavement. One brake can lock up and flat spot the tire.

Same goes for tires with different load ranges or different tread patterns and much different tire diameters.

Uniroyal says;
*If you must use radial tires with bias-ply tires on the same vehicle (not recommended), the radial tires must always be placed on the rear axle. Never mix radial and bias-ply tires on the same axle.*

A google on mixing radial and bias ply tires has days of reading.