Does anyone know if the stock tires are radials or not?

 

Yes they are.

 

Go to the Polaris site and look at the 850 specs.....then look for tires and rims section. You'll see the "r" (radial) in the dimensions list.

I like the tires, but I don't go lookin' for mud or fly around at top speed on dirt roads and pavement. Maybe I'll change my tune after the trials finally open up in Maine and New England....but for now they seem pretty good. I guess that's the point though....they are pretty good, but not that good

ATV season is short, sled season is short, golf season is short, ski season is short, hunting season is short......but we do have a lot of good seasons!

 

Take those stock tires and throw them away! Before I got new rims and tires..I had 4 flats..and bent a front rim. They would be great tires on a 400lb 250. WORTHLESS

 

What tires did you go with?