60' times with a 275/40 verse 315/35 Nitto D/R?

So, will there be THAT much of a difference between the two. I am going to get one or the other this spring to help get my 60's down and cut down/out any spin while shifting.

I would love to go with the 315's BUT I need to stick with the stock 9"rims (cause I cant get them in anything other than that) so I was thinking the 275's would fit better (NO fitment problems at all actually). But I want traction also. Any ideas?

Sorry, should have put that in. I have been to the track once since getting the car late last year. And while there I got in only TWO runs in three hours, not much time to experiment. With that being said:

60'- 2.41
1/4- 13.2 @ 111.8 mph


I know if I practice slipping the clutch a bit when launching I should see some 2.0x-2.1x 60's. I was hoping with practice and the D/R's I could pull a sub 2.0 60', I dont think that should be too difficult. I am starting to think that it is definately do-able with the 275's.

I am hoping to get a solid 12.5-12.6x, by gaining .3-.5 on the launch and .05-.2 in the shifts with no tire slip. The MPH seems to be there for a solid mid 12