kintsgt

I love the looks of 20 inch wheels on the new GTs. It seems to seal up the wheel/fender gaps nicely with no lowering. All of this being said, I know some people on here say that they have negative affect on the cars grip and handling.

What are your thoughts before I pull the trigger on 20s? As always thanks for your feedback. I am new to the hobby and appreciate all of the help here!

99mstng

I'm running the Roush 20x9.5 with 275/35 all the way around. Only have a couple hundred miles on them but they ride great and I haven't noticed any negative effects vs. the factory Brembo wheels and tires. I'm still going to drop mine though ... I've already got the steeda ultralites and koni sports just need to install.

Tony Alonso

The sidewall height of the tire also affect the visual impact of the gap size. I see this when I look at a stock Boss 302 35 series tire on the 19" wheels when comparing to the GT's 45 series non-Brembo tires.

It's the total diameter of wheel plus tire that counts!

The larger wheels mean more unsprung weight that has to be turned, which can affect your acceleration times. Also, the larger tires generally have shorter sidewalls, which means ride comfort can be reduced when encountering sharp impacts.

I think the wheel well size of the car does easily visually support a 20" wheel, but that will be offset by a higher cost for wheels and tires, along with the other things mentioned above.

The 19" wheels are a nice compromise, although the staggered wheels of the SVT performance package option on the GT500 (19" fronts, 20" rears) look good. Here's a thread where someone put them on the '05-'09 version of the Mustang.

Cyberalized

I think you will still need a drop...

2011GB/CS

I was happy with how the 20's i put on my car looked. I have Eibach's on it. Lowered it an "1 1/4" in front and "1 1/2" in rear.

kintsgt

If you have 20's or 18 with it lowered, are the gaps at the wheel wells the same?

Tony Alonso

Depends on the spring height...

stang8psi

usually! it's the overall tire size is usually the same weather you have 18's,19's,or 20's! so yes the wheels and tires are usually the same it's just how you visually see it. You would look at it and think because you have a 18 that it is smaller but whe you have a 20 they are bigger but the overall diameter is the same because of tires!

Bmeline916

I just got my 20" stealth black fr500's they are lighter than the factory brembo wheels fronts run 27lb and rear run 31lb. The brembo's weighted 37lb each and they where 19" of course this is the weights with out the tires on. IMO go 20" do it big!! Or go home!

kintsgt

I would love to see some pics of non lowered GTs with 20s.....any suggestions?

Bmeline916

Will have pics posted tomorrow you will find them in the "new wheels and tires coming" thread!

kintsgt

I hate my wheels, they have to go. I can't wait to see yours.

Bmeline916

Check out my wheel thread!! Got pics of the wheels and tires!

kintsgt

They look awesome, now let's see them on your blue beast!

Bmeline916

They would look killer on your red also.

kintsgt

So if I currently have 235s/18 inch......what is that largest rim that would fit my current tires?

99mstng

20's with stock brembo suspension

https://themustangsource.com/f726/new-wheels-502704/

All new suspension parts sitting in my basement waiting for good weather to install.

Tony Alonso

If you look up the stock tire specs on Tire Rack's website, it shows the range of wheel widths for that tire.

Tire Rack is a good source of information about wheel and tire specs.

11stgGT

Buy 20" for the street. They do fill in the wheel wells nicely and dont effect your daily driving all that much.

If you like to track the car, or take it to the strip, a separate set would be worth the money. If you have the money you can have the best of both worlds and buy a set of 20" HRE's or some concave racing wheel at 2k a pop.

99mstng

http://m.youtube.com/#/watch?desktop...6Cm9b5PM&gl=US

I'm on my phone not sure if the link will work. 9.7 on forgestar 20s with nitto NT50R ...