I like the Michelin Defender tires for my F150 and I'll be buying a new set in the spring when I take off my winter wheels & tires. I was phoning around yesterday to get some prices and one tire dealer told me something I've never heard of before. I MUST allow them to check my wheel alignment ... (for free) ... and if adjustments are needed they'll do it for $140. If I decline the offer it will void the warranty on the tires.
I saw something on the net awhile back about a scam similar to this but didn't read the article and just wondered if anyone else has heard of this before.
FWIW, I'm very fussy about my tires, rotate the every 5000 miles, check the pressures regularly and replace them every 6 years.