Guards

dear vee dubbers

I have a set of 2inch wider than stock front guards made out of fiberglass, oi also have dropped spindals, and before i drive it i want know a way, to allow some light tire scrape withour burning trough the fiberglass and reuinging the guards???
any ideas

If I am understanding what you are asking. Is that you would like to know how much wheel travel you can safely have wiithout hitting the guards?
Long method - remove the torsion bars and lower the front with the jack.
or
Short method - get some bags of sand or cement and start loading the boot up!