I run Tubes on a 3,000 lb 10.5 Oultaw car...never had tire shake Yet. I like the extra support on the heavier car with smaller tire Consistant 1.10 and 1.11 60fts.
ps. I even ran tubes on my high 5 second low 6 seconds cars also...just for the pure fact it was less hassle of putting air into them all the time.....my time is worth something...you go and add up all the time you spend placing air in leaky tires and you will find it will be the smartest $50.00/$100.00 one time spend you will ever make in Racing.
http://www.youtube.com/user/63topspo.../3/dP9MzOuTs9I
Just my opinion only