Yes for the most part. It would struggle to go into 8th. If you are having the problem you must also have the 321 gears. They suck. I don't have plans of changing gears now. I don't think the size of the tires is all the problem but more the huge addition of wind resistance at highway speeds with the level and the tires. I added the K&N 63 series CAI and a mufflex/Magnaflow muffler. It didn't fix everything but I did get power back, better mpg and overall better performance. The best $400 you'll spend. Did the CAI first and it helped but when I then did the exhaust it really made a difference. More air in...more air out. And sounds sweet.