PP1 Wheels Tire Size Setup Question

dennis123

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Would there be any noticeable performance improvements running 285/35/Z19 on the rears and 265/35/19 in the fronts instead of the recommended 255/40/19 front and 275/40/19 rear that come with the performance package?

 

compprep

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They're a little shorter, meaning more gap to fender, less ground clearance, and the PP1 wheels are at the low end of recommended wheel width. Can you? Sure, but not enough gained IMHO.
 
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dennis123

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That is the urban myth probably from drag racing and rear wheel width on a conditioned track. It is true to some extent but a balance of comfort and traction is close to stock.

For the street need balanced setup for the track a different width for each track makes sense.

Most do big ones for looks. Too wide car tramlines like crazy like tierods 100K miles past end of life and rear end can't hook up on uneven pavement.
So would you say the bigger tire setup would be better for the track but the stock size is best for comfort/street driving?
 


luc

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The Mustang is a front-heavy, understeering pig. Pp1 included
Need bigger tires in the front, not in the back
A squared set up is always better.
 

shogun32

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Wider by 10mm doesn't count is what we're getting at when we say "no". If you want more performance to deal with that front heavy piggishness you want wider rims and the tires that brings.

11 wide is for dedicated track rats and a tall ask for a commuter. 10" is most people's go-to but I have 4 sets of 9.5 squared or staggered with 10.5.

If you're really keen on the very heavy cast wheels then some people buy 2 more rears and go 9.5 square by slapping a 5mm spacer onto the front spindle. Then 275 square or 285/35 makes a bit more sense.
 

TonyNJ

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Wider by 10mm doesn't count is what we're getting at when we say "no". If you want more performance to deal with that front heavy piggishness you want wider rims and the tires that brings.

11 wide is for dedicated track rats and a tall ask for a commuter. 10" is most people's go-to but I have 4 sets of 9.5 squared or staggered with 10.5.

If you're really keen on the very heavy cast wheels then some people buy 2 more rears and go 9.5 square by slapping a 5mm spacer onto the front spindle. Then 275 square or 285/35 makes a bit more sense.
I love my front heavy piggish car. 😁
 
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dennis123

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The Mustang is a front-heavy, understeering pig. Pp1 included
Need bigger tires in the front, not in the back
A squared set up is always better.
I had no idea squared setups were better. I always assumed most people went staggered. Would there be significant improvement running 275s across the board on the pp1 wheels?
 

luc

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I had no idea squared setups were better. I always assumed most people went staggered. Would there be significant improvement running 275s across the board on the pp1 wheels?
Yes, 275 all around would be better but you can’t put 275 on the 9” front rims
You could buy a used set of rear and use them in front with 275 and a 5mm spacers
Best set up for the street is:
19x10, ET 35 with 285/35 tires all around
 

S550 HPP

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I have Continental DWS 06 Plus 275/40/19 all around on my HPP wheels, 9.5 Inch. With the Magneride I really like how it handles. Not as gripping as the Corsa 4s summer tires, but then again I can use them in 45 degree and below. 😀
 

2morrow

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Isn't the general consensus bigger tires = better grip?
Not all the time. I would go as far as saying compound trumps size. If staying with same tires then yes. I’ve seen a lot of people go to a wider tire but garbage compound.

If you wanted to keep the same wheel size, consider in investing in a really good set of tires.

In my case, I run a 305 square and it grips much better than stock but it is not a DD.
 
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Flyhalf

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Would be the same tire compound
Slighty bigger contact = slighty better grip vs same compound but smaller.
Not big science here.

There are many companies selling bigger wheels kit (APEX WHEELS i. E. ) staggered with no extra need to put on.
A common configuration is 285 front 305 rear. With 19x10 and 19x11 wheels.
Or

The squared setup has advantages and cons

Pros.
U can rotate easily wheels all around for better tire wearing (mostly for roadcourse usage)
Car will handle better. (305mm squared is common in mustang racing community
No issues for daily and great choice IF tracking is in the plans.

Cons
Tires cost more
In the front U need longer front studs with 25mm spacers.

Good luck!
 

 
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