He has been sniffing too much tire glue. The driveshaft & transmission will rotate at different speed due the the different tire diameter from before - so long story short, your speedo will be off. The knucklehead at the tire shop is a moron.Hm. The guy at firestone claimed that since the odometer will not be affected by larger tires because it relies more on the transmission and driveshaft rotations, or something along those lines. Is this true? Not terribly concerned with having an odo off by some 3% but on a long road trip, might be a little annoying. Also nice to show off how many miles the thing truly has once it's past 100k, 150k, 200k, etc to have maintained great build quality that I almost expect it to, assuming I don't plan on selling it.
I'll be going on a small road trip this weekend that will be mostly highway driving after mostly city driving. Hopefully I can refill the tank and judge both of these soon enough on my first full tank with the larger tires.What does it do to the MPG have you guys noticed a difference?