:iagree:. At 100K miles actually driven, your odometer would read 110K. It's a personal decision wether this is accepable or not. I plan on getting a PCMForLess in a couple of months, I will have it calibrated for my tires.
An interesting observation I've had in the past couple of months is that rental cars seem to be set to read about 1% faster than actual speed. I've had three GM loaners (2009 TB, 2010 Caprice & 2009 Envoy) since June 1st and all three have been off the same amount. The vehicles all came from the same dealer/rental company. I wonder if they're trying to slow down the drivers and prevent accidents. :weird: