Ecoboost Performance Forum

Since the SHO comes in different rims sizes. 18" PI, 19", and 20".

Would the PI rims size yield the best launch time with the same tire?

Just wondering if peeps here would benefit and lose a 1/10th they are looking for with the 60'.

Quote from: Macgyver on April 13, 2019, 11:19:20 PM
Since the SHO comes in different rims sizes. 18" PI, 19", and 20".

Would the PI rims size yield the best launch time with the same tire?

Just wondering if peeps here would benefit and lose a 1/10th they are looking for with the 60'.

Tough call, if you go from 20-18" and air them right and they are grippy enough you might be able to drop 5 thousands off the 60' .. but you will be dropping trap speed.. might just be a wash

Mike (Ecopowerparts) was using 18s with mickeys for the fronts for his drag setup IIRC.

Wheel and Tire weight will make a difference as well.  My Mickey Thompson 20x9 SC-5 wheels weigh 29 lbs.  My front tires 245/40/20 Continental Extreme Contact DW tires weigh 25.2 lbs.  My rear 275/35/20 of the same tire weigh 26 lbs.  Total combined wheel and Tire weight is 218.4 lbs.  Lighter wheels/tires improve acceleration and decrease stopping distance.

I believe stock is something around 240 lbs total. 

Combine lighter wheels/tires with locked down suspension, you'll have a winner!

That's my point. People here are trying everything for that last 10th or two. You will hook up better with fat 18s and not lose any trap speed. You are still using the smae diameter tire. If you get light 18s with some really sticky tires. Boom. Wonder what it would really do combined with what was said above. HR spings and or Coilovers along with the new Engine mounts.

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DR's were tried previously. Back in like 2012.

Couple of guys out of Michigan.

They were slower in the 1/4 as a result of their use.

Problem was, the inability to warm them up, no thanks to the AWD aspects of the platform.

Lighter wheels also netted slower times, because they caused to much wheel spin and hop.

Custom traction bars/straps were tried too, and also didn't result in any appreciable improvement(s).

Suffice to say, neither of them had the now recently made available trans mounts.

Not sure if the addition of them would've made a difference  back then.

Unfortunately, both owners have since sold their SHO's, and have moved away from the platform.


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Good points. Forgot about the inability to heat tires up.

Why would less rotational mass slow a SHO down tho ?

Anyway. That was 7 years ago. A lot has changed.

As I said, the lighter the wheels, the more it causes loss of traction.

Loss of traction then in turn, causes the throttle to shut down, ultimately ending the fun altogether.

Always interesting to see new attempts regardless.

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Lighter wheels will never make you slower if they are of equivalent size. If you lose traction from lighter wheels launch lighter, but I doubt that would ever be the case.... Unless your wheels weigh a hundred lbs each... You are reducing drivetrain inefficiencies with lighter wheels. You don't make more power at the crank but you would at the wheels.

I'm not out to argue with you Jordan, just advising the community what happened directly with owners who've performed the proposed "enchancments" themselves.

What I've consistently seen over the years, is that what common practices, and ideologies that have applied to others cars/models/etc. have not proven to be the same, or perform the same, on the late model SHO platform.

As the great Yoda says......(https://uploads.tapatalk-cdn.com/20190414/eb37a000db2729126ec3d35ffe9353b2.gif)

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The lighter the wheel the slight chance of wheel hop IIRC!  Z

The Flower wheels alone weigh 28.4. Pounds each.

I must say I can't tell the difference from the stockers to my wheel/tire combo but I "just knew" it to be better!?  Lol all I know is that I, like many other fellow ecoboosters need more traction. 

Quote from: ZSHO on April 14, 2019, 04:59:14 PM
The lighter the wheel the slight chance of wheel hop IIRC!  Z

The Flower wheels alone weigh 28.4. Pounds each.

Damn those wheels are light then, I had a 2005 Pontiac GTO the stock 18s weighed 34 lbs without tires and my 2015 Mustang GT wheels weighed 33 lbs and they were 19s .

I think if there is any issues with there being a slower or having issues with a different wheel set up it's probably correlated to new tires and not so much the wheel. There is quite a bit of mathematics that would go into it and all of them point into improvements. I mean there is a reason almost every new vehicle comes with aluminum wheels over the old school steely style despite costing more to produce. Not trying to argue, but until I see data that says otherwise I am going to stick with the science.

As they say, everything is connected (https://www.songsforteaching.com/folk/dembones.php).  OEM design is a conglomeration of objectives, prominent ones being safety and fuel economy.

https://m.tirerack.com/tires/tiretech/techpage.jsp?techid=108 (https://m.tirerack.com/tires/tiretech/techpage.jsp?techid=108)

I am no racer.

7 years is a long time.

18" with some decently sticky tires. I actually have light weight 18" at 8.5" same bolt pattern.

Upgrade Motor Mounts.

Upgrade coils springs or go to Coilovers

Proper tire pressure.

I still say a tenth is easily possible above what the Mounts will do already.

I hope someone can do this and it pays off with good results.

When I first got on this forum. This platform did not have any motor mounts and I was like what?

Its all good. I just posted this for discussion and information.

For sure!

Hell, even I picked up the mounts myself.

The amount of slop, or play in the OEM one's is pretty unbelievable.

Seems that 2019 will unfold into an interesting year for the platform, as other new products (besides these mounts) have been developed/released.

Kind of an oddity given that FMC's killed off production of them just a few short weeks ago.

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These new products give a big middle finger to Ford's decision for sure.  That is the way of the underdog!