Where are the best deals in 30 x 3 1/2 tires these days?
This thread suggests you should try Summit Racing (!): http://www.mtfca.com/discus/messages/599638/686242.html?1476968121
Check out Lucas old Riverside tread design. I put on a set over 2 years ago and so far.....no age cracks. Lucas has the best price that I could find unless Summit has them.