Sorry, didn't mean to appear arguementative.
Like Samson said:: you can remove rollers to test. You can at that point in time weigh the rollers and buy what you need. Altho I still contend that rollers removed will cause no damage or make it unreliable.

Like I said in an earlier post, the others are not wrong, just getting technical for what your looking to achieve.
Good luck~Have fun~ tires down. [img]i/expressions/face-icon-small-happy.gif[/img]