Hmmm...I just looked through my dealer mailings and found one that offers four free oil changes if you buy four tires before May 30. At $80 an oil change, that might make the price competitive on those Pilots.
The only problem is I never know if they'll honor the oil change deals...last time I brought in a $23 oil change coupon, they accepted it unknowingly...but called me later and told me that next time they wouldn't. But I notice there's still no exclusion for the xfire in the legal disclaimer...