19s or 20s?
 

From a performance standpoint should I got with 19 or 20 inch wheels? I want to try and blend my straight line performance while still being able to maintain daily driveability. Would 19 up front and 20 out back make any difference? The biggest tire I would put on the rear would be a 305.

20's offer more tire choice's, but a loss of power. 19's great but limited to tires, and with with a drop look good.. Shelby's run 19F 20R, and looks very good. as far as tire choices im still searching myself..

for the best performance, you want the lightest wheel you can get.

What mid west said. The weight matters more than the diameter. Not much but a little. The whole 19" and 20" staggered never made much sense to me. If anything you'd want 20" in the front and 19" in the rear. haha. Adding weight/diameter to anything that rotates with the motor is what hinders performance. Unless you're that anal about .1 -.2 seconds I'd go with the 20s. 1st for tire selection. 2nd for looks.

Why not just a nice set of 18's with a 1'' drop all around? Nice and subtle.

19s or 20s?
 

20s
http://i290.photobucket.com/albums/l...ps043fef73.jpg
http://i290.photobucket.com/albums/l...ps2c5f9f4f.jpg
http://i290.photobucket.com/albums/l...ps66900279.jpg

Ya I never understood putting a larger diamater wheel in the rear either, other than for looks. Its best to get a light, wide wheel for performance. Obviously even going wider will cause some added weight but you will also increase your traction surface area and it will improve handling a bit more.

Looks great which wheels are those?

19s or 20s?
 

TSW Valencia's Staggered 20s, they are actually for sale, I want to get the Staggered FR500s instead. I'm to OCD these wheels are Matt Black, I want the Gloss Black for my car. I'm asking $1000 OBO for the wheels, the tires aren't for sale. If your interested hit me up 254 630 7408.
http://i290.photobucket.com/albums/l...psda09b034.jpg
http://i290.photobucket.com/albums/l...ps329a65c2.jpg
http://i290.photobucket.com/albums/l...ps5bfd6a02.jpg
http://i290.photobucket.com/albums/l...ps8b380d03.jpg

18s > *
I also never understood people throwing 20s on a Mustang but everyone seems to do it. I guess it looks good on some cars but definitely not ideal from a performance standpoint. Best tire selection is going to be 18s and your ride quality won't suffer much because your not riding on rubber bands. My wheels weigh 17lbs Idk of many 19-20 inch wheel even close.

Truf, 18's for performance. 18x10s in the rear with a drop is plenty for me. 20's I just think rap video for some reason. :signs16: When doe right it looks gd but like I said just not for me.

Only heavy cast wheels will hurt performance. There are plenty of quality wheels out there to choose from in a 20 diameter that are lightweight. My car is a perfect example of that.

In my opinion, 18's are way too small for these cars due to the size of the large fenderwells. 18's are just too small to the point almost look like a spare tire. These new 5.0's are quite large cars especially when compared to the fox 5.0's back in the day where 17's were the norm or a custom wheel was an 18 to fill the fenderwell.

When it comes to wheels, it's especially true, you get what you pay for. If you buy a "cheaper" wheel, it's going to made cheaply using cheaper, heavier materials.

Larger wheels also affect the gear ratio. 18's are to small in your opinion but with a drop it looks perfect to me. 20's just look too big.

Unless one is a major track whore, the minimal changes to the gear are hardly noticeable. Only stockish cars would really notice it. If you any kind of decent power its not even noticeable.

Wrong. Wheels have absolutely no relation to gear ratio.

Tire diameter effects gear ratio, but you can choose tires for larger wheels that have an equal tire diameter as stock 17, 18, or 19's in 20" sizes without affecting gear ratio.

That being said, if you choose tires with different diameter than stock, say approx. 3/4" shorter or taller, the effect on gear ratio is minimal, about 3% on average. At 70mph you'r speedometer would be about +2mph with smaller tires or -2mph with larger tires.

You don't lose power if the overall weight of your 20" wheels/tires are the same overall weight as the stock 18" or 19" wheels/tires, which isn't too hard since the factory wheels are usually on the heavier side.

Agreed, the right 18" wheels can look nice, but you need to know what your plans are for the brakes, as more of the 18" wheel choices will not work with the larger 14" Brembo brakes, or other big brake kits.

The Corvette has done this since the C5 in 1997. Other car high performance car manufacturers do this as well, so apparently there is real benefit when tuned and setup. Just because it doesn't make sense doesn't mean we should fear it.