So being new to this I have a couple of questions about wheels.

1. With the 07, how do you deal with the TPS when you switch wheels (do it yourself or have it done)?
2. Will the extra mass of a 20" wheel vs. an 18" wheel make that much difference in acceleration?

Thanks

 

smaller wheels are actually better at the drag strips if you intend to go that route, most drag guys have small wheels for less weight and such things that help with physics. Personally I will be upgrading to wider wheels in the back anyway, I have 20" wheels on it. . As long as you keep the overall wheel/tire height the same, you will have no problems with the speedo calibration. The 20" ers are real low profile tires. Cool, but ride quality suffers some, and life of tire is not good,
I have 17" rear tires for racing with mickey's and 20" for looks

[IMG]local://upfiles/52448/F29BCA995A814167BFF2EE4FE0DB1B26.jpg[/IMG]

 

1. I havent heard a whole lot yet about the 2007 TPS deal, but I would suggest having the dealership you got your car from mount and balance your new wheels.
(if they can be integrated with the TPS system at all, that is)
2. yes, your acceleration will lessen a bit and it will be slightly more difficult to brake, or it will require more effort anyway... but from what i've heard it isn't a terribly big deal.
if you're looking to race then 20's arent the way to go... unless you keep a spare set of smaller wheels

 

I agree with both 100% go to alternativeauto.com there are a few good example of what a 2005 mustang with 20" rims can do in the quater mile!