Let's get serious about track tires for GT350

[svttim]

Look soon for a major announcement for a new tire that will be available, both street and track versions and, at a reduced price

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[Norm Peterson]

I know a couple of the PNW guys have moved to the Porsche spec tire because it's a 102Y vs. the OEM 98Y, so theoretically it should be better at handling heavy loads. According to what I've heard, they're getting 7+ days out of them. I'll @CSL add more info. He's also trying a set of 315s squared next, so he can provide data there.

People do need to be aware of the fact that the 98Y tire is a 98 in Standard Load, while the 102Y is an XL tire. The rated load vs inflation pressure tables for both of those sizes are identical up to 36 psi, where the SL table stops. XL only gains load capacity for pressures beyond 36.

In general, an SL number is matched for load ratings by an XL number four higher. Don't know why, only that that's the way it is.


Norm

 

[chedder]

I run the N spec tires on my GT350 295/325. They have 9 track days and still have 3/32" tread remaining. 40 years racing/30 years teaching. I use the recommended track alignment and 34# cold pressure. I'm usually at 1.3 g turn limit and 1.2 braking. Videos posted elsewhere.

 

[firestarter2]

I run the N spec tires on my GT350 295/325. They have 9 track days and still have 3/32" tread remaining. 40 years racing/30 years teaching. I use the recommended track alignment and 34# cold pressure. I'm usually at 1.3 g turn limit and 1.2 braking. Videos posted elsewhere.

34# cold would put you hot at what? I think the manufactures limit was like 37 or 38# but I can not seem to find the document anymore.

 

[Competition Orange]

34 cold would put me north of 40 hot on Mid Ohio. That's absolutely not ideal...

 

[honeybadger]

34 cold would put me north of 40 hot on Mid Ohio. That's absolutely not ideal...

I've learned tire temps/pressures are really variable. I've driven with Randy and my mind truly can't figure out how he drives like with high tire pressures and gets so many days out of his tires. The dude is very quick.

But, what works in the PNW does not work in CA, Texas, or GA from my experience. There are lots of variables that need to be considered.

 

[Mjc1241]

#91 svttim, Wednesday at 4:23 PM
Look soon for a major announcement for a new tire that will be available, both street and track versions and, at a reduced price


Looking forward to this announcement. I want to put new tires next month on my new R spec rim setup that I ordered.

 

[Competition Orange]

I've learned tire temps/pressures are really variable. I've driven with Randy and my mind truly can't figure out how he drives like with high tire pressures and gets so many days out of his tires. The dude is very quick.

But, what works in the PNW does not work in CA, Texas, or GA from my experience. There are lots of variables that need to be considered.

I don't disagree with what you've posted. With that said, unusual recommendations such as 34 cold should come with qualifiers such as those you stated.

 

[Eritas]

I've learned tire temps/pressures are really variable. I've driven with Randy and my mind truly can't figure out how he drives like with high tire pressures and gets so many days out of his tires. The dude is very quick.

But, what works in the PNW does not work in CA, Texas, or GA from my experience. There are lots of variables that need to be considered.

Pobst?

You can drive fast and not wear out a tire as quickly as a slower person who is sliding both ends of the car and wearing out the tires.

 

[svttim]

I should have pictures and pricing on a the new set of tires I spoke about in 3 to 4 weeks.

 

[jmn444]

I'm assuming you just mean the cup 2's in non r gt350 sizes? Or a new brand/tire alltogether?

 

[svttim]

I'm assuming you just mean the cup 2's in non r gt350 sizes? Or a new brand/tire alltogether?

A new brand of tire made for the GT350 and the GT350R along with some others

 

[jmn444]

nice!

 

[havasu486]

I'll be in the market sometime this season Tim. #isitaprilyet

 

[Mountain376]

A new brand of tire made for the GT350 and the GT350R along with some others

US, European or Japanese company?

A true new tire or an extension of something out in limited sizes?

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