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-   -   18" vs 20" (http://mustangforums.com/forum/2005-2014-mustangs/701204-18-vs-20-a.html)

mighted1987 09-20-2013 12:22 AM

18" vs 20"
 
What you guys opinions on rolling with 18" vs 20"?
In term of performance lost? I have 2013 5.0 with steeda cold air and steeda tune, the car run great with the 18" 235-50-18
Pirreli scorpion, but i hate the look the tire look small and they stick inside etc,
I wanted 19" but got a crazy deal on a stagger setup look-a-like amr rims in gun metal, ill be running 245-35-20 and 285-30-20 on a 8.5" and 9.5"
What do i need to expect? I do plan to drag and ill use my 18" drag radial but will keep the 20" upfront, what you guys think? I love the "go and show" mixed look. And my stock 18" rims realy werent my cup of tea, i just dont want to regret goin with 20" and not even able to tear the street with smoke and power '

CMcNam 09-20-2013 12:51 AM

You're going to get a variety of opinions and feedback. There's a thread in the general section already about driving on 20s that might help you. I love my 18s, check out my profile if you want to see them. They are 18x9.5" with 275 Nittos on all four corners.

Since you did ask for opinions though, here's mine :D I chose 18s because they are better for handling at the limit. They offer some warning before they let go, unlike something bigger, which will offer no warning before they lose traction. My 18s are lighter than comparable wheels as well. They also clear my Brembos. A wheel with a bigger diameter (where more of the weight is toward the outside of the wheel) is going to take more effort to turn than a smaller diameter wheel. Since you are drag racing, I'm just going to go ahead and say that I don't think you should have 20s on the car, period. There are folks who successfully drag race on their big wheels, but I think they would be even more successful with smaller ones. If you don't want the wheels inside the fender, you need to look at the offset. That'll determine how far out they stick.

Frankly the little rubber bands on 20s just look wrong on American muscle (in my opinion). I am in the boat that anything bigger just look like wagon wheels and that you are all show and no go.

For reference, Ford equips their race cars (such as the Boss 302S and 302R or FR500C) with 18s. Some people think that just because a GT500 or Boss 302 comes off the factory floor with 19s or 20s, that must mean that's the best choice, and that is simply not true.

At the end of the day though, the only real thing that matters is what YOU want and everyone else be damned.

Norm Peterson 09-20-2013 08:57 AM

18's should also be a little better at street launches, as there will be a little more sidewall to absorb "shock". This is of more importance with a manual transmission, but it doesn't go away entirely if it's the automatic that you have.

18's will certainly ride a little better, at least if you compare 18's and 20's of the same tire make and model. And you'll be less likely to suffer pinch-flats (I had a neighbor who never did manage to learn this, no matter how many times his "I'm-not-round-today" tires tried to tell him).

I suspect that once the sidewall height calculated from tire OD and wheel size drops much below about 4" (100 mm), you're starting to give away useable street performance. R-compound track tires and drag radials that are built with hard use the primary (only?) focus may be an exception to that admittedly rough guideline, but then again you need to modify the suspension to take full advantage of R-comp capabilities and you really shouldn't waste your DR's grip cruising around on the street.


Norm

Rudolph Hucker 09-20-2013 09:36 AM

18 way better but look cack
20's really add a lot of mass..changes the whole feel of the car for the worse
i'de get 19's meself
if u got a vert then 20's are a no no..they will destroy the cars handling

Nuke 09-20-2013 10:17 AM

Quote:

Originally Posted by CMcNam (Post 8283684)
You're going to get a variety of opinions and feedback...

+1

I'm big on the retro look of these cars and a good bit of sidewall is my preference to retain that retro look. I prefer the 255/55's on my wife's 17" Pony's Bullitt wheels over the 275/40's on my 18" GT500 takeoffs. To me, cars with big wheels and rubber band tires look like clown cars. Not too many S197's pull it off WELL.

Although 20's will add rotational mass, you'll likely barely notice it with the 5.0. And depending on the tire, you WILL most likely feel a loss in ride quality. Hit some bad potholes and kiss a wheel goodbye.

It's all personal preference.

Roy_R 09-20-2013 11:55 AM

I'm not getting rid of my 20s....I have a super charger to overcome the inertia of the additional weight! :)

http://i118.photobucket.com/albums/o...2/IMG_1532.jpg

adidasUNT8 09-20-2013 12:49 PM

If you're going for performance get 18"s

If you're going for looks and don't care about performance get 20"s

18"s will give you a smoother ride, better traction, and less rotational mass. I noticed a difference in the amount of effort it took to move my gt when I had the stock 18" wheels and when I upgraded to the 20"s

mighted1987 09-20-2013 01:19 PM

Yah i already ordered ill give them a try. And put my 18" dr when i hit the drag, if i dont like how the car react with the 20" ill definitly remove and sell the kit. The price i paid should really be easy to re-sell
Ill post picture today

Btw car is a stick with a 3.55

TheDivaDanielle 09-20-2013 06:32 PM

Quote:

Originally Posted by Rudolph Hucker (Post 8283785)
18 way better but look cack
20's really add a lot of mass..changes the whole feel of the car for the worse
i'de get 19's meself
if u got a vert then 20's are a no no..they will destroy the cars handling

I'm fine with my 20's on my vert. no change in handling ability.

https://fbcdn-sphotos-d-a.akamaihd.n...97390306_o.jpg

adidasUNT8 09-20-2013 06:41 PM

^ Nice looking ride Danielle

TheDivaDanielle 09-20-2013 06:43 PM

Thanks, side stripes have since been removed. May redo w/ center slightly thicker at some point.

Considering changing to Niche Milans, as the Torq Thrusts have a really aggressive offset in the back, and it's rough of a slammed car like mine. If the wheels change, the stripes might change too. Matte Black.

mighted1987 09-20-2013 08:32 PM

so heres the car stock at the shop for new wheels

https://scontent-b.xx.fbcdn.net/hpho...85801152_n.jpg

after wheels install and window tint today:

https://fbcdn-sphotos-f-a.akamaihd.n...45167646_n.jpg

and couple others pict:

https://scontent-b.xx.fbcdn.net/hpho...25438709_n.jpg
https://fbcdn-sphotos-g-a.akamaihd.n...07286662_n.jpg

got the car tuesday, so far mods installed are
cold air intake steeda with steeda custom tune
window tint 35% all around
staggerd 20'' 8.5 upfront with 245-35-20 and 285-30 on 9.5'' rear
trying to find which coilspring ill show put on to get a nice drop, the gab is pretty obvious, also shopping for somes mufflers then ill be set until next summer since winter is here in like 2 month:(

808muscle 09-20-2013 10:27 PM

OP I am really confused. You had a v6 conversion to a v8 Eleanor kit with a m90 in it, then switched to the Chrysler and now a 5.0.............. and still save stranded dogs in your spare time? Dude help me out. LOL

New ride looks great. Wheel choice is sweet. I'm not a fan of 20's but they look great on your car. A drop is must, that wheel gap looks crazy big.....could be the lighting IDK. Tint is always a must. A very cool ride, keep this one for a while ok. LOL

mighted1987 09-20-2013 10:45 PM

hahaha, funny, yah well no body wanted my swapped stang, didnt get a single call out of 2 month on my ads, and ended having my uncle who sold it to me offering to buy it back since I had some interrest in the 300c he had in his show room, that was the only way I could save some tax and get a new car and say good bye to this money-sucker, I moded the C but it was boring to drive, after 3 month I ended finding a dealer offering a nice trade in value for the 300c, and gave me a very good price for the mustang ,so I Jumped on it, I alway wanted a coyote, im even happier having the new model with taillight (13') this car is awesome, rattle-free / gear-whine free etc, and push very strong for N/A.Im definitly keeping it, i cant really afford trading in etc anymore, it end being costy, I lost way too much with that freaking swap.
Yah you are right, 20'' really look more like ''show'' but I really like how they look but i would have loved running similar setup in 19'' or 18'' with a drop and beefer tire then stock, but it made no sens buying 18'' and throw them on my small 235-50-18 pirreli p zero. so far the car spin way less, but i dont like the feeling it give when I switch 2-3 lane on the highway while speeding, the steering get pretty nervous and swing easily. not so cool.

on a side note, i didnt had to rescue much more dogs, but we adopted a little refugee my friend found, it a female and she match perfectly with my current rottweiler/pitbull mix, we also have 2 cats, but were full now:P

mighted1987 09-20-2013 11:48 PM

well ****, i just went ahead and tryed the car on a emtpy night road while the temperature cooled down,
i almost crashed myself a couple time, thèses tires suck ass, when you pull at higher speed the car start floating and boucing slowly from left to right, and you feel the steering getting loose and out of control. maybe i need better suspension? but my 18 pirreli werent doing that at all, i dont know anything about rubber brand, mine are wanli? how can i get such ****ty traction at high speed with 285-30 rubber..
guess i have to sell thèses rims now , boo.

CMcNam 09-21-2013 12:25 AM

You might be able to sell just the tires and buy better tires instead of selling the wheels.

mighted1987 09-21-2013 12:34 AM

good idea.. but that kinda blowed my balloon, i feel im all for performance..
ill see if i get any interrest..damn this suck

one of my friend told me it might be because im not dropped with the bigger tire take feel more the road imperfection, could make the car sloppy while speeding with stock height..does that even make sens

adidasUNT8 09-21-2013 01:13 AM

Some tread patterns grip the road differently as well. So if you go over a ridge or crack it will pull the car a certain direction. My old KDW's used to do that. Have you had you car re-aligned since the new install. This is a must as well. Lowering it will help with the floaty feel.

dared3vil0 09-21-2013 01:30 AM

Quote:

Originally Posted by CMcNam (Post 8283684)
You're going to get a variety of opinions and feedback. There's a thread in the general section already about driving on 20s that might help you. I love my 18s, check out my profile if you want to see them. They are 18x9.5" with 275 Nittos on all four corners.

Since you did ask for opinions though, here's mine :D I chose 18s because they are better for handling at the limit. They offer some warning before they let go, unlike something bigger, which will offer no warning before they lose traction. My 18s are lighter than comparable wheels as well. They also clear my Brembos. A wheel with a bigger diameter (where more of the weight is toward the outside of the wheel) is going to take more effort to turn than a smaller diameter wheel. Since you are drag racing, I'm just going to go ahead and say that I don't think you should have 20s on the car, period. There are folks who successfully drag race on their big wheels, but I think they would be even more successful with smaller ones. If you don't want the wheels inside the fender, you need to look at the offset. That'll determine how far out they stick.

Frankly the little rubber bands on 20s just look wrong on American muscle (in my opinion). I am in the boat that anything bigger just look like wagon wheels and that you are all show and no go.

For reference, Ford equips their race cars (such as the Boss 302S and 302R or FR500C) with 18s. Some people think that just because a GT500 or Boss 302 comes off the factory floor with 19s or 20s, that must mean that's the best choice, and that is simply not true.

At the end of the day though, the only real thing that matters is what YOU want and everyone else be damned.

What wheels are those in your sig? So clean, they look awesome!

audioAl 09-21-2013 04:18 AM

It looks ok, I just want the performance advantage of 18's for my 3.7. So you are selling the wheels?


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