Need tire advice

[Moirae]

I'm running a 1/5 outcast exb with an XLX2 esc and 1100kv motor, 39/39 gearing on 8s. I can't keep tires on it. Is it just geared too high? Top speed is around 65-70 on blacktop but I rarely run it that way. 55-60 in the grass which is where I usually run. I do more lower speed bashing and jumping than anything.

So far I've blown up 2 sets of factory arrma backflips and a set of duratrax sixpacks. I make sure they are glued good before each run. I just got a set of proline mashers and so far so good but I'm only 2 runs in.

Anybody else have this problem? What am I doing wrong? Tires are getting expensive.......

What is your punch control set to? Thanks!