Well...I now know why not many run 20's on these beasts, my 00 ls V8 came with some lovely 20" DaVinci's running 245/35r20 run flats..except the rear passenger side...I now know why...today while out of town it popped... something wore down the inside treadwall, and sadly I have not had it up on a lift since I got it (and I suspect it's running stock-but cut coils ) so I did not see the damage happening. Secondly...in my tiny home town(2 ferries from home) there is not a single shop open, let alone a single used 20" tire that would work to be found...and ironically I am picking up a nice set of niche 20's with 225/35r20 on them tomorrow...well now I am catching those ferries in my mom's car...picking them up and catching another back tonite...I'll get in at 130am...swap the wheels...and catch the ferry back to be home by noon ...oh what a day to be a gangster lol