Keep it up, 1 more for tyre 1, REMEMBER- this is a test for power your bomb holds, not how destructive it is if you want to test destructiveness, Use the bomb strength tester if you want to test dectructiveness. post the level of how destructive your bomb is
if you have a tyre 1 bomb with a power of 100000000000 that means is OMG if you have a tyre 4 bomb with a power of 100000000000 that meens is a little worse.
Check out the ranks table. with all the different tyres