2 reasons:
On the 18", the tire wall was apparently flexing too much.
So, coming into a corner, the tires were not turning according to the steering input.
And also, I wanted more thread (width) on the gound to decrease throttle oversteer.
Staying with 18" wheels and going with wider tires, it would have made matters worse.
I'm running 255 front and 275 rear on 19" and NO rubbing.
After the change, I was lifting the front passenger tire on Little Bend last time at MSR.
Since then, I have changed the equation again, by having changed to a little harder springs, RSR (Mo' money and Mo' money...).
Will see what happens next time at the end of March at the BMW Lone Star CCA HPDE.

 

I think everyone sitting around you still remembers I think our initial thought you looking at your "girl" with a crazy look and you shouting "WTF" probably made people think you were about to snap on her.

 

I vouch for Bill... Good deal.

 

Yes i have and it is nice... !! i would pick it up... if i did not have one at the moment!!

 

I'd sell you mine, but you wouldn't like the price.... :\

 

1 million $$ haa

 

Nah, not that high; but if someone offered me 8k, I'd take it.

 

*EDIT:
I don't know what was I thinking (senility, I'm at that age), I went from street 17"s to 18"s for the track, not 19"s.
Sorry, for the mistake Bob.

 

ahhhh that make more sense...dood lay off on all that viagra

 

I wish it was only Viagra, but it's also Peptobismol, Metamusil, Pepcid, Gas-X, Mylanta and ton of Depends.