I bought my 2000 TT used in '06. The couple I bought it from claimed to put 2000-2500 miles a year on it. We've put anywhere from 2500-3500 miles a year on it. So without accurate records in front of me (I keep a journal but the others didn't) I cant be sure. But at 2500 a year, thats at least 37,500 miles.
Another thing to note, I don't know if the shackles are original. I do know they weren't upgraded.
2000 Cherokee 29BH with 6V batteries, LED lights & 400 watts of solar power, flipped axles and raised. 2007 Tundra 5.7L DC-LB with lots of mods. C-co, 8/158th AVN Maint.