different size tires for my 2004 tahoe

[sbsb]

My 2004 tahoe came with 265/70 17's, Yokohama Geolanders. They are beginning to wear and I am shopping for tires. My neighbor offered me some slightly used ones-255/75 17's, Bridgestone Duelers. Will the change in tire size affect the speedometer or anything else?
Thanks.

 

[clkelley]

Welcome to the neighborhood!

Yes, the 255 is a smaller tire so the effect will be that when your speedo shows you doing 55 you will actually be a little closer to 50, but that is about the only change that should happen.

 

[sbsb]

Thanks for taking the time to answer.

 

[clkelley]

No problem, good luck with the tires.

 

[NathT]

actually there is almost no difference in overall height, per tire rack it is only .3 tenths smaller because going from a 70 aspect ratio to a 75 your old tires will have a wider tread.. the newer ones will have a narrower foot print.. look on tire rack and search the size and click specs..
you will feel like it has a little more power because your overall ratio will change but with .3 tenths you are talking about very little difference.