315's

[JVENOM]

will it slow me down in the 1/4 for it being a wider tire? or will I get better traction??

 

[jtkz13]

versus what other size?

Its much better to stick with 15's due to the lighter wheel weight and larger sidewall

 

[Outlaw]

You many get a better 60 but you will also lose a little mph as well, Im pretty sure it balance's itself out over the entire 1/4 mile.

 

[JVENOM]

my shop said it all is in, if the rim is heavy.