Tire sizes

Thanks for your answer. I had just put new ball bearings brakes and tires (rear) on a 08 Veracruze spending over 1K when I got on the highway and warning lights came on and I lost power steering (all at the same time). Had it towed to the shop-mechanic said it probably needed new engine. The car had been great and didn't have a ton of $ to put into a new one so I bought another used Veracruz. Although the 08 is in great shape, nobody wants to buy a car needing a new engine-resale value is not there to interest a mechanic. So, I figured I'd retain the tires, wheels and related stuff because I have already put a lot of miles on the new (for me) Veracruz Limited '12. But then I noticed the difference in size of the tires-thus my question. Thanks for taking the time to answer.