I'll be going through this myself. The Highlander's Michelin Premier LTX are down to 2/32-3/32's so they need to be replaced. Excellent tire, smooth, handle great, quiet until the last season or so. But, they wear crazy fast. I put a max of 30k km, bought them used, but essentially brand new.
The HL has an oddball size, 225/70/R16 so there's not a ton of options. Most anything decent (Generals, Coopers, Etc) run about $200 per tire. I saw that Quattro Tires has the Kumho HP71 at a discounted price, with an instant 10% rebate, and then an online rebate of $80. This brings the cost down to $121/tire, after taxes. They also had the Kumho HT51's for a similar price, they look like an LTX clone, but lots of comments about road noise.
The reviews are generally positive, with the biggest criticism being the tire wear. Since I'll likely be selling the HL sooner than later, and it only sees 6k/yr max on the summer tires, it's not an issue. My last set of Kumho's were very hard to balance, and I never really liked them. Here's hoping this roll of the dice works out ok.
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