Just bought my first ATV - 1999 Bear Tracker, excellent shape with original tires. While the tires still have good tread, driving around my property recently - steep hills on dirt roads after 1" of rain - I think it'd be good to have tires that are a bit more aggressive. I've also heard folks suggest slightly larger tires than the OEM's might help. I'm trying to prepare for the rainy months in CA - mud, no snow - so I can get this 2wd around better w/o getting stuck.

Also, I'm assuming I'd need to upgrade all the tires, not just the drive ones, right?

Thanks for your suggestions.

 

If its 2wd it will only do so much. I have ITP Xtra on mine and they have some pretty radical tread bars on them. Maybe a little wider may help just see what some others say.