What was the tire size before? If you aren't compensating for tire size difference, I would be willing to bet your mileage didn't change.
https://www.tacomaworld.com/tirecalc
I had someone pull in front of me a few weeks ago and damaged my flawless front bumper. Insurance paid for it and I'm considering getting a blacked out steel bumper but I love the look of the painted bumper. Plus if I replace the front with Black I'd have to do the back to match.
Chrome looks...
I would venture to say very few people hit that $11,000 mark...
I would also say that Canadians spend that $11,000 in additional costs to live, eat, tax, etc.
Free isn't Free in Canada.
My 2007 V6 got 18.6 on its first full tank. Always fill up the same way, don't top off. Write down your miles driven and gallons used. Pretty easy to do. I use the Calendar app on my iPhone to track fuel costs and in the notes section I document that info for safekeeping.
Hope that helps.