I just bought a 98 TRD. When purchased they put new 30X9.5 tires on. I think these things are too small, am I correct??? My speedometer reads 10 mph high so it will say 85 when I am really going 75. Next when I am cruising 75 it is at like 3,200 maybe 3,300 RPMS a little high for me. Should I just get some new tires put on or what. Oh and my axle code is BO3A I am 99% sure that is what it is any way. Just wanted to see what you guys thought. Should I go with 31 or 32's if these things are to small? Thanks in advance.