The toyo R1? The R compounds used in many many car racing series? I run them on the race track, not on a viper though. I didn't notice any "wobbliness" in them??!?! Not sure what you are experiencing. 44 psi is wayyy too high. After running hot (like after a lapping session) they should not be over 41 psi. Try putting them down to like 34 psi.