Have brought the  Shenko “19” 3.50 back tyre to put on my 24 Oset haven’t fitted it yet and just wondering if I could have some thoughts on this the Shenko was $30.00 as opposed to $600.00 for the 17 inch wheel and wider trials tyre from  Oset , I only use the bike for trials and it’s great but looses a bit of grip with stock tyre, would I be better off with the 17 from oset or the Shenko, the Shenko will change the gearing a bit !!!!  Thoughts 

I got the 17" wheel and tire. The tire is radial and works pretty good at 3.5 PSI. Any lower and it wants to come off the rim. Grip isn't as good as a real, soft trials tire, but manageable. Depending on your weight, you might want to go to lighter springs.