These are 17x7.5" double five-spoke from an early 2000s Sequoia. With 4.5" backspacing, they are perfect for a 1st gen Tacoma.
TL;DR - I'm done with 16" wheels and the limited tire selection they offer. My next set of tires (and therefore wheels) will be 17".
I don't need new tires quite yet, but mine will only last another 6-9 months. Finding skinny 16" tires (255/85/R16) with a hybrid AT/MT tread pattern is nearly impossible, so I'm moving to 17" wheels for more options. I've already got the new wheels - which the ever-helpful Zane picked up for me for a steal - and after some cleaning and several coats of my favorite bronze coating, they are going to be fantastic.
Update 2024-09: After running these wheels on a trip to Canada, I was getting a lot more rubbing on the suspension - specifically, on the coilover reservoirs, which are mounted to my frame in the wheel well - than I did with my previous 3rd gen 4Runner 5-Star wheels. I went back to check the specs on these, and it turns out that the backspacing is actually 4.85", so the inner edge sits significantly closer to the frame.
Not great, but hopefully easily dealt with. I've written up this detail and more in my First Impressions - Sequioa Wheels and Kenda Klever RT Don't Fit!
In this Series
I have been trying to discover if the 1G Sequoia double 5 spoke is the same backset as the double 5 spoke offered on the Tundra of the same year. It looks identical. Did you come across anything verifying this when you were looking for a new wheel? Tires in the 255/85 range are much cheaper at 17" than 16" and there are plenty of Tundra wheels in my area but no Sequoia...
I can't imagine that they would be any different since the Tundra and Sequoia are essentially the same platform. I didn't know those wheels were available on Tundras, but if they were, I imagine they'd have the same backspacing.
One thing to be aware of is that these wheels are relatively heavy, enough so (in combination with the tires) that I notice it when starting from a stop compared to my old setup. You can see my first impressions of the new wheels/tires here, if you haven't already.