Thank you for the reply! The tires work great in the fresh cut grass! minor suspension change also helped. I put the stock tires back on for asphalt speed runs. I had also purchased a slightly smaller spur gear(also metal instead of plastic)53T. So only 1 tooth smaller than stock... the runs ended after about two tanks, i smashed into my mailbox at around 55-60. Not sure what happened but my car, even with TSM on 50%, just ran to the right, had no time to correct at that speed. Snapped my front left arm. Waiting on RPM arms to come in. I did notice that the gears were making much more noise with the new spur. After disassembly of the car, I noticed my clutch bell has flat spots on some teeth, maybe 7 of them... I'm not sure the pitches match up... the spur gear looks brand new still, can someone let me know what pitch I would need to look for on the spur? I'm seeing online that theres two different ones it could be? idk.. I'm also thinking about HIGH speed gearing. a bigger CB and possibly a different spur than 54t stock.(a tiny bit bigger maybe for the new top speed? so it still accels faster than hell?) Does anyone know of a bigger CB I can put directly onto my jato? sorry for all this but I am new and am getting into this alot !