I have a 230 Quadsport and was wondering if anyone had one with vipers on it.How do they work?

 

oh and also the Kenda Front Max for up front.

 

I had a pair of Vipers on the 88 Suzuki Quadrunner that I used to have. They were good tires with good traction on hard pack & fairly good in sand and moderate mud.They wore well and in fact were still in good shape when I traded the bike in 1996 on a new King Quad.
I know nothing about the Front Max tire, but I run the Bandit XC all around on my Warrior & am on my second set of them. The Banditxc for the front might be a good option for you also if it is available in your size. The xc is nearly bullet proof (not literally of course)and it hooks up great even on the hard pack we have in AZ,