If your Rav came with "H" rated tires Stick with "H" rated tires. if you are going with the narrower optional size for a winter tire its fine to go back to "T" or "S". For summer or in a place with no snow stick with "H" or above. Not that you will be going 180MPH but because the tire has better construction. It will stay "true" at highway speeds and flat across the tread up to the speed it is rated for. This is safer for you and me because it keeps you in your lane on curvy roads and out of mine. With wider tires its better to go with directional tread designs because the water is shed in both directions which keeps even pressure on your tires at all speeds (plus they tend to handle better). A solid center rib will give you better steering response and help you maintain a straight line for those highway speeds. Do your homework before buying. In my area Costco Wholesale have professionally trained sales people. They don't make commission. Lots of great info, great selection. You may have to order your size but the lifetime service is second to none. You won't find a more accommodating dealer. I guarantee. If you can find one in your area go there first and compare all the other tire places to them. Shop online at Costco.com. "Great tire info. "