Tires

[txmike]

I have a friend who says he replaces the tires on his RV everywhere 3-4 years regardless of where. Partially due to not moving a lot but also probably UV related.

My question to all of you (who have been a great help so far) is what about Model a tires? Tread is good but they are probably about 20+ years old. About to put her on the road and was curious.

If I do replace do I go with radials or not? How do they affect judging standards?