I have a 95 with the 2.5 auto, and 33" tires.... I don't take it on the freeway very often, so I am clueless as to what the typical rpms are for freeways speed.
I had to take the freeway this morning and my speedometer said 55 when my tach was just under 3k... I didn't feel comfortable pushing it past that, and I honestly don't know if it would have gone faster if I tried
Can you let me know what rpms you're running in the freeway speeds?