For what it's worth, I added tubes to my '99 M6 car because I nearly lost it on the top one breezy day running 13psi. I also plan on tubing my 26-10x15 ET Drags on my '02 A4 car. It's just way more stable w/tubes, in my opinion. Don't know what you lose in e.t. w/tubes, but I like the safety it gives me....Just my opinion. WJ. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

 

GTS has been 1.4X 60' in his 346 N/A 6speed car and he runs tubes <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />