We raced both blue groove and clay, both tracks changed with the weather..I use ft grooved radials only for mx, Stay with hoosiers for the front 57x6x10`s.. As for your left rear coming up that is a easy fix Sway bar adjustment, You turn right swaybar up to put pressure on left rear but to much it will push in the corners.I think I would stay with a proven tire Hoosiers for now.The red-line water wetter I mentioned is a additive for your anti-freeze works wonders on keeping it cool, I wish I could drink it,lol...When you first put the swaybar on the predator make sure both adjustments are the same ft/rt adjustment then you should turn both sides up to put pressure on the rears cause I have heard the Pred is hard to wheeley then you have to just turn right swaybar adjustment to put more pressure on left rear so both tires stay planted on the ground when hard cornering, when you get this set-up to match your speed and riding style you should not have to let off the throttle much in the corners, this is where you kick them where it counts in the corners..5/6 pounds wow, I don`t like my hoosiers to roll over in the turns takes away traction, just look at the Outlaw dirt track races you don`t see the tires roll on thier race cars the same for atv racing etc. I change tire pressure depending with the track conditions, a wet damp moist track I was useing 10pounds w/med soft compounds, with a dry dusty track low moisture I lower pressure to get more traction w/ a harder compound tire. I have tryed useing a soft compound tire for dry conditions and it just melted it, they were history in 1 night 200.00 bucks...When I started I was watching Micro midjets and saw how they got traction and asked them alot of tire questions hoosiers, they said hoosiers are not to roll over so tire pressure is important and started useing midget tires and I won almost all the races, traction was the key,Hoosiers makes atv tires but they are junk,when I find out again what the tires names again I will let ya know, size is I believe is 59x10x10 rears-ft`s 57x6x10`s...Hope this helps..As for the pic`s not sure how to post them, not to good with a computor,lol Gene#77