I'm dealing with this speedo issue being off also. I've now mentioned it at 5K service (and got "no problems found") - and now at 10K service and got "It's normal, adjustment for rim/tire size differences. I have a feeling they haven't taken the time to perform the Euro TSB I've read about on here (tks). Drives me nuts ...I have to go I guess about 71mph to actually be doing 65. I'm sure the cop will understand someday...OH, it's messed up officer...I have to go over the speed limit by my measurements, but I'm bad at math.... I'm going back armed with info now. I think it's unacceptable. And, if it's truly calibrated for biggers tires/rims...fine, put 'em on and make it right!