SEMA, or Specialty Equipment Manufacturers Association, put out a nice document explaining why it is important to understand that mounting radial tires on old wheels that were originally designed and built for Bias tire application may not be a good move.
Now this really only impacts people with "Classic" RVs but maybe some have a hobby that involves old classic cars.
If so I STRONGLY suggest you download and review THIS information.
While we are on the topic of Bias tires there is one very important thing to remember if you decide to keep running them on your vehicle. You should NEVER mix Bias and Radial type tires on an axle of your motorhome, and if you have a multi-axle trailer never mix the two different types on the trailer.
The sidewall stiffness difference can result in handling or braking problems and even tire failure in an extreme case.
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