Don't know anything about the Titan, but by actual measurement, the front wheels of our fully-loaded 2014 Legend was 3960 lbs, so I don't think you are even close to being safe with those ramps.
I made a set of homemade ramps out of 2x12 lumber:
Lift f.jpg
LIft r.jpg
Lift.jpg
They work great and I am completely confident of their safety.
Look for cheap lumber in the "Cull" pile at Home Depot.