Originally Posted by bengel
I agree changing your tires or lowering your gear ratio would help your et but it would also lower your mph not raise it. As I see it I think it must be a misprint or an error on the timing. 12.98 is possible but 113 mph in stock trim seems way to high. It takes an approximate 10 hp to gain 1 mph or lose 1 tenth so 5 mph is a bit much thats like 50 hp.
I feel like I'm, whipping a dead horse here, but I don't understand why you feel the smaller diameter tire would give you a quicker et. but a slower over all speed. As long as the SRT goes thru the traps well before its reaches its red line, then the engine is still going to be pulling, and pulling stronger than it would with the larger diameter tires.
The smaller tires will only lower the cars eventual top speed, which of course isn't attainable in a 1/4 mile anyway.
I've been making the suggestion to use the front tires on the rear ever since March, and no one ever responds to my remarks. I also mentioned it would be better if you borrowed somebody else's front tires, (preferably) a Pilot for better traction. The 1" or so of less tread width you would lose by doing so will probably be most noticeable on an SRT. That's why I suggested someone try it on a Limited automatic first. That way you could get the most consistent runs to compare your finding. I would do it myself, but I have I have a 6 spd. and I don't have anybody to loan me their front tires.