bigger tires on stock rims

[sandealer]

Has anyone upgraded their tires on a 4th Gen SE 4WD V8 on the stock rims? I'm looking at going with a 265/70/17 vs the 265/65/17.

I've read other posts and all sounds well, but I thought I would make sure it's on the stock rims and no other changes are necessary. The yahoo at Discount Tire told me today that I didn't want to do it because it would mess up my computer, ABS, 4WD, and throw off the speedometer. Any comments on that would be helpful as well.
Thanks!

 

[mustangsally]

A LOT of people have gone up to 265/70/17 with zero problems. You won't have any problems either. It will throw off your speedometer a very little bit (the size difference between the two tires isn't that much), but not so you will notice.