BMR's 300A Performance Pack 2015 Has Arrived

[Department Of Boost]

Of course, we want to run the widest rubber possible.

However, we are going to run the 18x10's on all 4 - as we feel that will help us relate to the common enthusiast, a little better.

I think this thing will handle really well with a square set-up on 10's...with some suspension mods and a good tire.

It's kinda like my drag build. I mean, a 325 tire is the best.....but I am going to run a 17" wheel on the back with a 295 DR....because that will be the common choice with our customer base.

I support this^^^^^

 

[Pentalab]

Of course, we want to run the widest rubber possible.

However, we are going to run the 18x10's on all 4 - as we feel that will help us relate to the common enthusiast, a little better.

I think this thing will handle really well with a square set-up on 10's...with some suspension mods and a good tire.

It's kinda like my drag build. I mean, a 325 tire is the best.....but I am going to run a 17" wheel on the back with a 295 DR....because that will be the common choice with our customer base.

If one had something like 18 x10's..with the same offset, like 45mm, and either a 275 or 285 tire, square setup, then at least you could rotate the tires. With same width tires front + rear, understeer should be less, making tweaking the suspension just a little easier. For the little guy, this just might be the ticket.

 

[dontlifttoshift]

If one had something like 18 x10's..with the same offset,, square setup, then at least you could rotate the tires.

#mindfuckingblown

Less understeer is the same as more oversteer.

 

[Department Of Boost]

#mindfuckingblown

Less understeer is the same as more oversteer.

And IMO you don't tune under/oversteer with tires, you do it with swaybars and springs.

Put the fattest rubber on you can for the situation and tune around it.

 

[Dubstep Shep]

And IMO you don't tune under/oversteer with tires, you do it with swaybars and springs.

Put the fattest rubber on you can for the situation and tune around it.

Bingo.

If the car understeers because of too fat a rear tire, that shows a need for a better tuned suspension, not smaller tires

 

[Pauly]

I can't wait to see the build. Looking forward to the results.

 

[Pentalab]

Bingo.

If the car understeers because of too fat a rear tire, that shows a need for a better tuned suspension, not smaller tires

There's obvious merit to a square setup, being able to rotate tires is one of them. Hence BMR's use of a square setup. I could live with either a 275/285/295 square setup. The hardcore racer's will use the staggered option, since they can fit bigger rears.

 

[csamsh]

And IMO you don't tune under/oversteer with tires, you do it with swaybars and springs.

Put the fattest rubber on you can for the situation and tune around it.

So...we start off with someone making sense.

Bingo.

If the car understeers because of too fat a rear tire, that shows a need for a better tuned suspension, not smaller tires

I disagree....if you're understeering with a big rear you need more grip (more tire) in front. Add grip at the end that's slipping, not remove grip at the end that's sticking.

There's obvious merit to a square setup, being able to rotate tires is one of them. Hence BMR's use of a square setup. I could live with either a 275/285/295 square setup. The hardcore racer's will use the staggered option, since they can fit bigger rears.

WAT?

No...the "hardcore racer" uses the biggest tires possible that the rules set allows. If there are no rules, then you put just as big of a front on the car as you do the rear.

 

[claudermilk]

This last day's worth of posts is why I hang around & this is the best Mustang forum.

Regarding the last post, witness the Acura cars the last couple of years in ALMS. Once they threw those huge rear tires up front they dominated and everyone followed suit.

I'm going the square 18x10 & tune with sways route myself.

 

[Dubstep Shep]

Yea, I agree that if you can fit bigger tires up front, you should.
But with a good suspension setup having a square setup won't be better than having those same front tires and bigger rear tires. It just takes some tuning.

 

[kcbrown]

And IMO you don't tune under/oversteer with tires, you do it with swaybars and springs.

Put the fattest rubber on you can for the situation and tune around it.

Is it possible to tune understeer/oversteer through all regimes of a corner independently just with swaybars and springs, regardless of the size of the rubber you're running? I'm skeptical, but only mildly so.

I'm mainly especially skeptical because Vorshlag wasn't, that I know of, running a staggered setup on their S197, even though they certainly could fit more rubber in the rear if they'd chosen to do so, as far as I know...

 

[Department Of Boost]

Is it possible to tune understeer/oversteer through all regimes of a corner independently just with swaybars and springs, regardless of the size of the rubber you're running? I'm skeptical, but only mildly so.

I'm mainly especially skeptical because Vorshlag wasn't, that I know of, running a staggered setup on their S197, even though they certainly could fit more rubber in the rear if they'd chosen to do so, as far as I know...

They're running staggered now.

 

[kcbrown]

They're running staggered now.

Oh, interesting. Didn't notice that for some reason...

 

[NDSP]

They're running staggered now.

Only on their street tire setup, that I know of. I believe they are still square with the A6's.

 

[csamsh]

If you can call 335 front, 345 rear a stagger, then yeah it's a stagger. I believe it's done more to get the shorter sidewalls on the front...the 335 A6's are 30's, 345's are 35's

 

[BMR Tech]

I think we are going to run a 305 up front, and a 285 out back.

Wait..

 

[Department Of Boost]

I think we are going to run a 305 up front, and a 285 out back.

Wait..

If you turn the shifter around that will work. FACT!

 

[modernbeat]

Only on their street tire setup, that I know of. I believe they are still square with the A6's.

You got it backwards.

We're running square 335 BFG Rivals for street tire competitions.
We're running 335 front and 345 rear Hoosier A6 for unlimited tire competitions.

We've run square tires until we flared the rear fenders. For a while we ran square 315 tires on staggered wheels (11" front, 12" rear) because of fitment issues with the stock fenders. Then we flared the fronts and ran 12" wheels all around.

Here's our current street tire setup. You can see the rear fenders were actually built for the taller and wider 345 Hoosier.

 

[BMR Tech]

^ I like that.

 

[Department Of Boost]

That's what my car should look like!!!!