Re: How long did your OEM tires last?
I'm still running on the original Dunlop ST4's at 45,000+ miles on my '07 LE 8-passenger. Remaining tread is to about the middle of Lincoln's forehead on a penny inserted between the tread wear bars on all four tires. Tread wear is pretty even due to the tires being rotated every 5,000 miles and tire pressures are checked monthly. I always ran Michelin's on the Astrovan I replaced with the Sienna and had excellent results with them. The Astro was on it's second set of Michelin's when I traded it at 185,000 miles. It was a conversion van in the same weight class as the Sienna and it's OEM Tiger Paw tires were "slicks" by 50,000 miles. I intend to replace the Sienna's tires with the Hydro-edge tires when the time comes -- I like the specs on the Hydro's.
'91 Toyota Corolla Station Wagon
'07 Sienna LE 8-passenger