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Let's get serious about track tires for GT350

MikeR397

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Does anyone know if the 305/30/19 cup 2 tires that come on a mustang performance pack 2 car on all 4 corners are the same tire the R uses up front? I know the size is the same but same compound?
 

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honeybadger

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Tried to get NT01s to compare to Cup2s, but hard to argue with $800 vs. $1450. Tires look great. Hopefully they'll last the rest of the year :)

upload_2019-9-12_14-21-10.png
 
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honeybadger

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Yeah....doing some mid-season tweaks while it's too hot. Engine is 100% good. Just turns out you can't remove long tube headers with the FP350S oil pan installed and the engine still in the car. Long story short - I started, found out halfway, and then was too far along to undo what I did.

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@honeybadger what size wheels are you running 315 square on ?
 

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MikeR397

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I'm also running 19x11 square all around.
How come you don’t use the CF wheels if you can also do 315s all around to rotate with them and no spacers?
 
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How come you don’t use the CF wheels if you can also do 315s all around to rotate with them and no spacers?
Mines a regular 350, so I don't have the carbons. Since I haven't owned a set myself, I can't say for sure, but I don't think I'd use them anyways. My Signature wheels weight only 2lbs heavier than carbons and given the amount of track abuse my car sees, it just wouldn't be economical for when I'd evidently break one.

Regarding the square setup, the OEM R wheels can't be rotated unless you bought (4) of the rear wheels, but youd still need spacers.
 

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Mines a regular 350, so I don't have the carbons. Since I haven't owned a set myself, I can't say for sure, but I don't think I'd use them anyways. My Signature wheels weight only 2lbs heavier than carbons and given the amount of track abuse my car sees, it just wouldn't be economical for when I'd evidently break one.

Regarding the square setup, the OEM R wheels can't be rotated unless you bought (4) of the rear wheels, but youd still need spacers.
I’m just going to run 315 on the front carbon wheels and just rotate side to side and avoid spacers. That’s a fine solution to kill the aging 315 tires I have since I lug a spare set of wheels with me anyway. Otherwise I’ll be running those 2015 315s in the rear through 2021! They have seemed fine but 5-6 years seems like pushing it with age.
 
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I’m just going to run 315 on the front carbon wheels and just rotate side to side and avoid spacers. That’s a fine solution to kill the aging 315 tires I have since I lug a spare set of wheels with me anyway. Otherwise I’ll be running those 2015 315s in the rear through 2021! They have seemed fine but 5-6 years seems like pushing it with age.
Depending on your driving style, you might start to wear them faster as you push harder. So wouldn't be a idea to start to expect that. If you do anything to dial out understeer, you'll also start to see more tire degradation in the rear.

As a side note, have a buddy with a staggered setup like you and he takes his car in and has the tire shop rotate the tires for him (by remounting them). It'll cost some $$$, but can help balance out wear.
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