Ok, so after searching for ever I found a place that still has some new Nitto nt 404 tires in 305/40/20. This is the size that I really want. Looking at the specs on them I found that the have a traction rating of A. My question is would I get better grip of the line with my current tires Continental conticrosscontact UHP with a traction rating of AA?? They are 295/40/20.