Will this change my ET in the quarter

[william SS]

Right now i have a few boltons nothing major. My Current time is 13.00x. I have headers ory and a flowmaster muffler with the stock piping. Im changing the whole catback to borla. I currently have nitto555R drag radials in 275/40/17 with stock ss wheels on my 01. Im changing the wheels to TT2 17 by 9.5 in the front and 17 by 11's in the back with brand new nitto555R dr's 275 in the front and 315 in the back. The ones on there right now are starting to get low. So once i change rims,tires and exhaust will my et change and if so will it be better, worse or stay about the same?

[Anthracis]

with 315s I've heard that you have to massage the inner fenders to get them to tuck in proper. But that may be with a wider rim.

[Y2KPewterSS]

The Borla will flow much better than the restrictive Flowmaster catback. You are probably adding a little bit of weight in the rear with the bigger wheels(probably not much though). You might see a small improvement in your ET's but nothing significant. I don't think they would be worse by any means though.

[Z ROADSTER]

Betcha you will slow down about .20 sec. especially if you run drag radials on the front ! Probably more than that . Also your car will slow down about 2 or 3 MPH thru the qtr.