Check brand-name Louise or Duratrax. I have 1:10 3,8" street tires on my 1:10 SC.
I think they call them Bandito MT from Louise. Very wide and also big trend to ballooning...
On the other hand,.. it looks good and in warmer conditions you will have a lot of grip!
As @lonee said Louise or Duratrax. I run Duratrax Bandito c2's on my Senton if you go that route be careful they grip like crazy, but I have yet to really start wearing them in the 6 months I've been running them. I have to come to almost a complete stop before making turns or it'll just flip over. Maybe try for a slightly harder compound not sure if that'd be c1 or c3 compound.